GOST 17769-83 FASTENERS. RULES OF ACCEPTANCE

FASTENERS

ACCEPTANCE RULES

GOST 17769-83

(ST SEV 218-82, ISO 3269-88)

FASTENERS Rules of acceptance Fastening details. Rules of acceptance	GOST 17769-83 (ST SEV 218-82, ISO 3269-88)

Effective date 01.01.84

1. This standard establishes rules for acceptance of finished fasteners using the statistical acceptance quality control method per GOST 18242.

By agreement between the customer and the manufacturer, for supply of fasteners for export as individual parts or for domestic supply, the acceptance rules set out in the appendix, which fully corresponds to ISO 3269-88, shall apply.

(Amended edition, Amendment No. 1).

2. General provisions

2.1. Control plans and the procedure for statistical acceptance quality control of products — per GOST 18242.

2.2. During acceptance of products, appearance, geometric parameters, mechanical properties and coating quality are checked.

2.3. Products shall be submitted for inspection in lots. A lot must consist of products of one designation.

2.4. A lot of products that does not meet the established requirements may be resubmitted for inspection after sorting and elimination of defects. If the results of the subsequent inspection prove unsatisfactory, the lot is considered rejected.

3. Appearance inspection

3.1. During appearance inspection, the presence of surface defects and design defects (failure to form individual elements, e.g. slot, thread, hexagon, etc.), their quantity and dimensions are determined.

3.2. During appearance inspection, products are distinguished by critical, major and minor defects. Critical defects — stress cracks and folds at points of change in the product’s cross section. Major defects — rolled-in blisters, forging cracks and thread damage, if their quantity and dimensions exceed the permissible norms, and design defects. All other defects are classified as minor.

3.3. The appearance inspection plan is single-sampling. The inspection level and acceptance quality limit (AQL) values are given in Table 1.

Table 1

Inspection plan elements	Surface and design defects
	critical	major	minor
Inspection level	S-4
Acceptance quality limit (AQL), %	0.015	2.5	4.0

3.4. If the results of appearance inspection of products prove unsatisfactory due to surface defects, the defective products are subjected to metallographic inspection; in this case the second sample is formed from the defective products of the previous sample and is inspected under a single-sampling plan at the inspection level and AQL values given in Table 1.

4. Inspection of geometric parameters

4.1. Geometric parameters (dimensions and deviations of form and location of surfaces) shall be inspected after verifying that products meet the requirements of clause 3.

4.2. During inspection of geometric parameters, major and minor parameters of products are distinguished. Major parameters are product parameters whose nonconformity with standard requirements substantially affects the use of the product for its intended purpose or its durability. Major parameters include the dimensions of the metric thread profile, the width and depth of the slot, the width across flats, and the diameter and taper of pins.

Other major parameters may additionally be established in accordance with the standards for product dimensions.

All other parameters are classified as minor.

4.3. The inspection plan for geometric parameters is double-sampling. The inspection level and AQL values are given in Table 2.

Table 2

Inspection plan elements	Product grades
	A and B		C
	major parameters	minor parameters	major parameters	minor parameters
Inspection level	S-4
Acceptance quality limit (AQL), %	1.5	2.5	2.5	4.0

5. Inspection of mechanical properties

5.1. Mechanical properties shall be inspected after verifying that products meet the requirements of clause 4.

5.2. During inspection of mechanical properties, destructive and non-destructive control are distinguished. Non-destructive control — testing of nuts under proof load, testing of the spring properties of washers, hardness testing, if the product’s fitness for its intended use is not reduced after the test. All other types of mechanical property inspection are classified as destructive control.

5.3. The inspection plan for mechanical properties is single-sampling. The inspection levels and AQL value are given in Table 3.

Table 3

Inspection plan elements	Inspection of mechanical properties
	non-destructive	destructive
Inspection level	S-3	S-2
Acceptance quality limit (AQL), %	2.5

6. Coating quality inspection

6.1. Coating quality shall be inspected after verifying that products meet the requirements of clause 5.

6.2. During coating quality inspection, depending on the coating type, the thickness, porosity, adhesion strength and protective properties of the coating are determined in accordance with GOST 9.302.

6.3. The inspection plan for coating quality is single-sampling. Inspection level S — 2. Acceptance quality limit AQL = 4%.

APPENDIX (mandatory)

ISO 3269-88. FASTENERS. ACCEPTANCE INSPECTION

1. Scope

1.1. This standard applies to the rules for the customer’s acceptance inspection for the purpose of accepting or rejecting fasteners, unless other acceptance rules have been agreed between the customer and the supplier when ordering fasteners. Additional special requirements for acceptance rules may be included in the relevant product standard, for example, for prevailing-torque self-locking nuts.

1.2. This standard does not apply to bolts, screws, studs, nuts, pins, washers and other fasteners intended for assembly of large-scale machinery, for special purposes or for special technical applications requiring more stringent control during manufacture and acceptance of fasteners.

The acceptance rules for such products are determined by agreement between the customer and the supplier at the time of ordering.

1.3. This standard applies only to finished products and does not provide for in-process control during manufacturing.

1.4. Auxiliary, spare and partially finished products (for example, blanks or parts prior to coating or heat treatment) may be obtained by the supplier of finished products from another supplier. However, the supplier of finished mass-produced fasteners must bear full responsibility for the quality of the finished product.

The supplier is not liable for defects arising from coating or other processing carried out by the customer after receipt of the fasteners.

1.5. Guidance on the rational application of this standard is provided.

2. References

GOST 1759.0-87 Bolts, screws, studs and nuts. Technical specifications.

GOST 1759.1-82 Bolts, screws, studs, nuts and wood screws. Tolerances. Methods for inspection of dimensions and deviations of form and location of surfaces.

GOST 1759.2-82 Bolts, screws and studs. Surface defects and inspection methods.

GOST 1759.3-83 Nuts. Surface defects and inspection methods.

GOST 1759.4-87 Bolts, screws and studs. Mechanical properties and test methods.

GOST 1759.5-87 Nuts. Mechanical properties and test methods.

GOST 10618-80 Self-tapping screws for metal and plastic. General technical specifications.

GOST 15895-77 Statistical methods of product quality control. Terms and definitions.

GOST 18123-82 Washers. General technical specifications.

GOST 18126-94 Bolts and nuts with thread diameter over 48 mm. General technical specifications.

GOST 18242-72 Statistical acceptance control based on an alternative characteristic. Inspection plans.

GOST 25556-82 Set screws. Mechanical properties and test methods.

3. General requirements

3.1. Each fastener must meet all the requirements of the relevant product standard; however, this is not always possible in mass production. Depending on the intended function and field of application, it is not always economically justified to separate conforming products from those that do not meet all requirements.

3.2. The supplier may use any method to control the quality of finished products, but care should be taken to ensure that fasteners meet the requirements of the relevant standards at all stages of production.

Designation of AQL does not mean that the supplier is entitled to knowingly supply products that do not meet the requirements of the standards.

3.3. The customer may test fasteners received for use as it considers necessary or economically justified, provided that this does not increase the supplier’s risk of rejection (5% for dimensional parameters and 12% for mechanical properties), unless otherwise specifically stipulated in the order.

3.4. During acceptance inspection, attention must be focused on the product’s ability to perform its intended function. Quality claims regarding a product may be made only when the detected nonconformity affects the intended function and/or application of the fasteners.

If the intended function is unknown at the time of inspection (for example, spare parts), any deviation from the specified tolerances must be regarded as affecting the function and/or application.

3.5. A rejected lot of fasteners may be resubmitted for re-inspection if the nonconformity of the items has been corrected or the lot has been re-sorted.

Note. If correcting the nonconformity may affect the intended function and application, the customer shall be notified.

3.6. Gauges used for inspection shall not evaluate fasteners as nonconforming if the actual dimensions and properties of the item do not exceed the specified limits.

In case of disagreement, direct measurements shall be carried out to make a decision.

3.7. If a lot meets the requirements of this standard applicable to acceptance conditions, individual fasteners that do not meet certain technical requirements may be rejected.

4. Definitions

This standard uses the following definitions based on GOST 15895.

4.1. Acceptance inspection — all operations, such as sampling, measurement, comparison and testing, necessary to decide whether a lot of fasteners can be accepted.

4.2. Supplier — manufacturer of fasteners, intermediary or representative.

4.3. Customer — recipient of fasteners or their representative.

4.4. Inspection lot — a specified quantity of fasteners of the same type, product grade, property class and size, manufactured under the same conditions and submitted by the manufacturer for inspection at one time.

4.5. Lot size (N) — the number of fasteners in a lot.

4.6. Sample — one or more fasteners taken from a lot at random.

4.7. Sample size (n) — the number of fasteners in a sample.

4.8. Characteristic — a dimension, mechanical property or other distinguishing feature of an item for which limits are established (for example, head height, shank diameter, tensile strength or hardness).

4.9. Major characteristic — a characteristic whose nonconformity may cause failure or significantly reduce the fastener’s suitability for its intended purpose.

4.10. Minor characteristic — a characteristic that cannot reduce suitability for the intended purpose, and deviation from the specified limits of which does not significantly affect the effective application or operation of fasteners.

4.11. Nonconformity — a deviation of quality characteristics as a result of which an item does not meet the specified requirements.

4.12. Nonconforming item — a fastener having one or more nonconformities.

4.13. Acceptance number (Ac) — the maximum number of nonconforming items in a sample at which the lot can be accepted.

4.14. Sampling plan — a plan according to which sampling is carried out to obtain information and make a decision on acceptance of a lot.

4.15. Acceptance quality level (AQL) — a quality level that, in a sampling plan, corresponds to a specified relatively high probability of acceptance.

4.16. Limiting quality (LQ) — a quality level that, in a sampling plan, corresponds to a specified relatively low probability of acceptance.

LQ₁₀ — the percentage of nonconforming items in an inspection lot that has a probability of acceptance equal to 10%; this indicator is often known as the consumer’s risk.

4.17. Producer’s risk — the degree of probability that a lot that does not meet the established technical requirements, and whose quality level corresponds to a certain AQL value, will be accepted under a sampling plan.

4.18. Probability of acceptance (L) — the probability that a lot containing a specified number of nonconforming items will not be rejected overall based on a sampling plan.

5. Acceptance inspection for dimensional characteristics and mechanical properties of fasteners

5.1. Tables 1a–1c indicate fasteners whose dimensional characteristics are inspected: the required characteristic and the corresponding AQL value are noted. For mechanical property characteristics, the AQL value to be inspected is found in tables 3a–3c.

5.2. Select the appropriate LQ₁₀/AQL ratio according to clause 3.3 (see table 2 for an example).

Notes:

1. By multiplying this ratio by the AQL value, LQ₁₀ is obtained. The LQ₁₀ value shall correspond to the function and/or application of the fastener. The sample of fasteners subjected to inspection may be reduced by selecting a larger LQ₁₀/AQL ratio if the items are supplied from a known source with continuous process control and previously inspected lots have shown good quality. Conversely, an increase in the inspected sample is required if the lot is heterogeneous and obtained from different suppliers. The LQ₁₀/AQL ratio is at the customer’s discretion.

2. Sampling plans in table 2 are determined by selecting AQL and the consumer’s risk (LQ₁₀). After these two parameters have been chosen, the sample size, acceptance number and producer’s risk follow automatically. The ratio of lot size to sample size in table 1 of GOST 18242 does not apply, since it is intended for use only in the case of production of lots in continuous series.

However, in such cases table 2 of this standard may be used, but it is also applicable to individually taken lots with the correct selection of LQ₁₀. In case of disagreement between the customer and the supplier, a sampling plan shall be selected such that the producer’s risk does not exceed the values specified in clause 3.3.

5.3. Knowing the AQL value and having selected the LQ₁₀/AQL ratio, the sample size and acceptance number are found (for example, from table 2).

5.4. Sampling is carried out in accordance with clause 4.6. For each characteristic, inspection is performed, the number of nonconforming items is noted, and the lot is accepted if the number of nonconforming items is equal to or less than the acceptance number.

5.5. In the event of rejection, disposal of the lot is determined by agreement between the customer and the supplier (clause 3.5).

5.6. Specimens for tensile testing (tables 3a–3c) shall be the same as those used for hardness inspection with the lowest and/or highest hardness reading. (For tensile testing with destruction of the specimen, the sample size is smaller than for nondestructive hardness inspection).

Proof load testing is considered a destructive test.

Examples

1. Thread inspection of a lot of hexagon head bolts of product grade A obtained from a supplier well known for consistent quality, therefore the LQ₁₀/AQL ratio = 6.2: AQL = 1.0 — Sample size 80 — Acceptance number Ac = 2.

2. Thread inspection of hexagon socket screws from an unknown supplier, therefore the LQ₁₀/AQL ratio should be reduced to 3.1: AQL = 1.0 — Sample size 500 — Acceptance number Ac = 10.

3. Mechanical property inspection: proof load stress for nuts: AQL = 1.5 — Sample size 8 — Acceptance number Ac = 0.

5.7. Nondestructive (visual) inspection to detect surface defects cannot always provide data on the type and size of defects. This data can only be obtained through destructive testing. Therefore, a larger sample size is established for nondestructive inspection to detect surface defects than for destructive testing.

If, during visual inspection, a fastener with stress cracks in any area, or folds on or under the bearing surface is found — except for “cloverleaf” folds on non-round fasteners — the lot shall be rejected.

If, during destructive testing, a fastener with rolled-in laps, tears, forging cracks, thread surface damage, tool marks, pitting or dents, or nicks exceeding the limits allowed for the given type of defect is found, the lot shall be rejected.

Table 1a. Dimensional characteristics of threaded fasteners

Applicable dimensional characteristics¹		Product group
		Hexagon socket head screws, product grade A and B² bolts and screws, studs	Product grade C² bolts and screws	Property class 8³ nuts	Property class 8³ nuts	Slotted head screws for metal	Self-tapping screws, thread-forming screws
		AQL⁴
Main characteristics	Width across flats	1.0	1.5	1.0	1.5	1.5	1.5
	Circumscribed circle diameter	1.0	1.5	1.0	1.5	-	1.5
	Width of the slot or hexagon socket	1.0	-	-	-	1.5	1.5
	Depth of the slot or hexagon socket	1.0	-	-	-	1.5	1.5
	Depth of the cross recess	-	-	-	-	1.5	1.5
	Radius under head	1.5	-	-	-	-	-
	Go thread gauge	1.0	1.5	1.5	1.5	1.5	-
	No-go thread gauge	1.0	1.5	2.5	2.5	1.5	-
	Outer thread diameter	-	-	-	-	-	2.5
Minor characteristics	All others	2.5	4.0	2.5	4.0	4.0	4.0

¹Characteristics shall be evaluated individually. ²Product grades relate to the classification of items by tolerances (see GOST 1759.1). ³Nut property class — per GOST 1759.5. ⁴For characteristics of hot-formed items, AQL = 2.5. Hot-formed items shall be submitted for inspection separately.

Table 1b. Dimensional characteristics of flat washers

Applicable dimensional characteristics¹		Product grades²
		A	C
		AQL
Main characteristics	Hole diameter	1.0	1.5
	Outer diameter	1.5	2.5
Minor characteristics	All others	2.5	4.0

¹Characteristics shall be evaluated individually. ²Product grades relate to the classification of items by tolerances (see GOST 18123).

Table 1c. Dimensional characteristics of pins

Applicable dimensional characteristics¹		Product group
		Cylindrical pins	Tapered pins	Pins with head and hole for cotter pin
Main characteristics	Outer diameter	1.0	1.0	-
	Outer diameter	-	-	1.0
	Surface roughness	1.0	1.0	1.0
	Taper	-	1.0	-
Minor characteristics	All others	2.5	2.5	2.5

¹Characteristics shall be evaluated individually.

Table 2. Examples of sampling plans¹

Acceptance number¹Ac	AQL					LQ₁₀/AQL ratio	Producer’s risk, %
	0.65	1.0	1.5	2.5	4.0
	Sample size²
0	20	13	8	5	3	16.5	12
1	80	50	32	20	13	7.5	9
2	125	80	50	32	20	6.2	5
3	200	125	80	50	32	5.2	4
5	315	200	125	80	50	4.4	2
7	500	315	200	125	80	3.7	2
10		500	315	200	125	3.1	2
14			500	315	200	2.6	2
21				500	315	2.2	1

¹All values in Table 2 are taken from GOST 18242. LQ₁₀/AQL ratios are average values. ²If the lot size is smaller than the required sample size, 100 % inspection shall be carried out.

Table 3a. Mechanical properties of threaded fasteners

Applicable mechanical properties¹see GOST 1759.0, GOST 1759.4, GOST 1759.5, GOST 10618, GOST 18126, GOST 25556	Carbon or alloy steel				Stainless steel
	Screws with socket head, bolts, screws, studs	Nuts	Slotted head screws for metal	Self-tapping screws, thread-forming screws	Bolts, screws, studs		Nuts
					<M5	> M5
	AQL
Tensile strength	1.5	-	1.5	-	1.5	1.5	-
Hardness	0.65	0.65	0.65	0.65	-	0.65³	0.65³
Proof stress²	-	-	-	-	-	1.5	-
Elongation after fracture	-	-	-	-	-	1.5	-
Stress under proof load³	-	1.5	-	-	-	1.5	-
Tensile strength on a wedge washer	1.5	-	-	-	-		-
Surface defects:
non-destructive (visual) inspection	0.65	0.65	0.65	0.65	-	-	-
destructive inspection of a specimen	1.5	1.5	1.5	1.5	-	-	-
Decarburization (property class 8.8)	1.5	-	-	-	-	-
Application test	-	-	-	1.5	-	-	-
Torque test	-	-	-	1.5	1.5	-	-
Wedge expansion test or tensile test with a conical washer	-	1.5	-	-	-	-	-
Marking⁴	0.65	0.65	-	-	-	0.65	0.65

¹Other characteristics may be specified in accordance with the requirements of the applicable standards, for example, the performance characteristics of prevailing-torque nuts. ²Tensile strength and proof stress may be verified in a single test. ³Applied depending on the steel grade. ⁴In accordance with national standards.

Table 3b. Mechanical properties of flat washers

Applicable mechanical properties1)	Carbon or alloy steel	Stainless steel
	AQL
Hardness	0.65	2)

1)Other characteristics may be specified in accordance with the requirements of the applicable standards. 2)The test is used to identify the material: to be established by a new standard.

Table 3c. Mechanical properties of pins

Applicable mechanical properties¹	Product group
	Cylindrical pins, taper pins, headed pins
	AQL
Tensile strength	1.5
Hardness	0.65

¹In accordance with product standards. Other characteristics may be specified in accordance with the requirements of the applicable standards.

APPENDIX. Guidance on rational application

(this guidance is not part of the standard)

1. General

In mass production it is impossible to prevent the occurrence of nonconforming products. Therefore, larger lots may incidentally contain some number of nonconforming products. Conditions of use generally do not require nonconforming products to be sorted out, since this is in most cases a labor-intensive and economically unfeasible process.

Any nonconforming product whose nonconformity may have an adverse effect on the intended use to a greater extent than permissible may be grounds for a claim.

If the customer tests every unit and thus the entire delivered lot, they will sort out the nonconforming products themselves and, if necessary, may file a claim. In this case, however, the AQL principles and values specified in this appendix do not apply.

Larger lots are generally subjected by the customer only to sampling inspection. Sampling inspection makes it possible to detect, with a greater or lesser degree of probability, only the nonconforming products present in the inspection lot. The degree of probability in this case depends on the sample size.

2. Purpose

The purpose of this standard is to establish objective criteria for deciding under what conditions a claim may be filed against an entire lot without knowing the exact number of nonconforming products in the lot. This is intended to protect the supplier against claims regarding those inspection lots in which the proportion of nonconforming products is small (less than the AQL value), but where it was erroneously indicated as too high as a result of incorrect sampling inspection (for example, due to too small a sample size).

3. Explanation of Section 1

This standard establishes quality limits (AQL values) and sampling plans for which the supplier’s risk does not exceed 5 % for dimensional characteristics and 12 % for mechanical properties in lots with a proportion of nonconforming products equal to the AQL value. On the one hand, this helps protect the supplier, while on the other, it leaves the customer the necessary freedom to choose the sampling plan required for technical reasons.

The customer can therefore relate the degree of inspection to the functional requirements and to the experience accumulated in inspecting previous lots received from the same supplier (quality history). The larger the sample size, i.e. the closer the LQ value in the sampling plan is to the AQL, the higher the probability of detecting lots in which the content of nonconforming products significantly exceeds the AQL value, but also the higher the effort and cost. Using this system, the customer can choose the technically and economically optimal option for themselves.

4. Explanation of Section 3

The following relationship exists between the sampling plan (sample size, acceptance number) and the AQL and LQ values. Each sampling plan is characterized by an operating characteristic (OC) curve (see diagram).

The curve shows the probability of acceptance in sampling inspection as a function of the true content of nonconforming products in the inspection lot. The points on the operating characteristic curve indicating 95 % and 10 % probability of acceptance were chosen to determine the required sample. The 95 % point on the operating characteristic curve shall be greater than or equal to the specified AQL value. The 10 % point on the operating characteristic curve (the LQ₁₀ value) shall be chosen by the customer at their discretion. The LQ₁₀ value corresponds to the proportion of nonconforming products in inspection lots that determines a high probability (90 %) of grounds for claims.

Operating characteristic curves for sampling plans

Note. Sampling plans 80/2 and 500/10 are permitted for AQL = 1.0, whereas 50/1 is not permitted (supplier’s risk exceeds 5 %).

This standard includes Table 2 for customers who do not have their own sampling system. The LQ₁₀ value in each case is calculated from this table by multiplying the LQ₁₀/AQL ratio by the AQL value.

Sampling inspection is used only to decide on the acceptance or rejection of an entire lot. Claims regarding individual nonconforming products are independent of this and are possible even if there are no objections to the lot and the lot as a whole has been accepted.

When discussing the AQL value, it is recognized that a nonconforming product rate in an entire lot of 5 % for dimensional characteristics and 12 % for mechanical characteristics is economically unfeasible for the supply of fasteners. Therefore, the AQL values and the supplier’s risk specified in this appendix are only characteristic values for determining the corresponding sampling plans. The actual quality of fasteners manufactured is generally higher than the AQL value.

5. Additional information on Section 3

The manufacturer tests the products at their own discretion, using the means and methods they consider appropriate, based on their knowledge of the relationship between manufacturing processes, materials, types of fasteners, and the frequency of nonconformity occurrence. They are not obliged to use the processes and tests described in this appendix, either during manufacturing or when inspecting finished products, if they can achieve the same result by other means and methods.

The customer also has the option of carrying out any test they consider appropriate. However, a test under stricter conditions (lower AQL value or lower acceptance probability) may be used as grounds for deciding on a claim regarding an inspection lot only if such a deviation from the requirements of this standard is permitted by agreement at the time of order.

Some deviations from specified tolerances or limits do not have a significant effect on the function or application of the fastener, and in accordance with 3.4 should not be grounds for claims. For example, thread tolerances provide a certain clearance allowing electrolytic coatings to be applied without affecting the thread’s performance characteristics. If the upper limit of the bolt’s pitch diameter is slightly exceeded and it is known that the thread will not be coated, this deviation does not have a significant effect on the function or application of the fastener, and there should be no claims.

Regardless of which gauges and measuring instruments are used, different measurement and inspection methods should not classify a product as nonconforming if the true values are within the established limits.

Standards covering inspection and test methods define how this principle is to be implemented in specific methods and for individual items of test equipment. The reliability of inspection methods and measuring equipment should be included in the evaluation of inspection and measurement results in borderline cases.

6. Explanation of Section 5

The classification into major and minor characteristics was carried out in accordance with the main functions of fasteners. Other classifications are subject to agreement at the time of order. However, this may increase production costs.

Properties for which limit values are not specified in this appendix or in other standards, for example GOST 1759.0, GOST 1759.4, GOST 1759.5, or in dimensional standards, may be important in individual cases. To avoid errors, the permissible limit values and/or limit samples should be measured at the time of ordering.

Control of mechanical properties, materials, and coatings requires significant resources. To reduce the cost of batch inspection, fasteners of the same type, property class, and finish, made from the same material and differing only in length, may be regarded as products of the same type.

Limit values have been specified for most of the properties being evaluated. Depending on the function of the product and deviations from the established limits, in individual cases, if a nonconformity is detected, an agreement may be reached between the customer and the supplier regarding the possibility of acceptance, re-sorting, or additional processing.

Recording the test results obtained for various batches from a given supplier provides a statistically characteristic picture of the supplier’s quality level over the corresponding period. In this regard, it is recommended that the results of non-destructive and destructive testing be recorded continuously and regularly in order to obtain statistical documentation for evaluating the quality level of a specific supplier.

The distinction between destructive and non-destructive testing is based on whether the samples can be used after testing. In hardness testing, only small areas of the surface are ground off, which usually has little effect on the further use of the tested sample. Therefore, hardness testing is considered non-destructive.

APPENDIX. (Added additionally, Amendment No. 1).

Informational data

1. DEVELOPED AND SUBMITTED BY the Ministry of Ferrous Metallurgy of the USSR

DEVELOPERS: K.G. Zalyalyutdinov, V.G. Vilde, B.S. Igmetov, N.A. Galkina, N.M. Shugaeva, L.A. Zimina, T.E. Yurchenko

2. APPROVED AND PUT INTO EFFECT BY RESOLUTION of the USSR State Committee for Standards dated 11.07.83 No. 3049

3. Review date — 1997.

4. International standard ISO 3269-88 “Fasteners. Acceptance inspection” is included in the appendix to the standard as an alternative document.

5. SUPERSEDES GOST 17769-72

6. REFERENCE REGULATORY AND TECHNICAL DOCUMENTS

Designation of the referenced regulatory document	Clause/appendix number	Designation of the referenced regulatory document	Clause/appendix number
GOST 9.302-88	6.2	GOST 10618-80	Appendix
GOST 1759.0-87	Appendix	GOST 15895-77	«
GOST 1759.1-82	«	GOST 18123-82	«
GOST 1759.2-82	«	GOST 18126-72	«
GOST 1759.3-83	«	GOST 18242-72	1, 2.1, appendix
GOST 1759.4-87	«	GOST 25556-82	Appendix
GOST 1759.5-87	«

7. REISSUE (May 1997) with Amendment No. 1, approved in December 1992 (IUS 2-93)