Specification: GOST 14725-69 Swing Bolts with Trapezoidal Thread

Swing bolts with trapezoidal thread are designed for machine tool fixtures.

Design and dimensions

The design and dimensions of the bolts shall conform to those specified in the table.

Dimensions in mm.

Bolt designation	Application	d	l		D	d₁	d₂ D11	b d11	l	l₁, max	r	*	Weight, kg
			Nom.	Limit deviation
7002-0641		Tr 16*4	70	±1.8	28	16	12	18	50	8	6	0.5	0.129
7002-0642			80										0.145
7002-0643			90										0.160
7002-0644			100										0.176
7002-0645			110										0.192
7002-0646			125										0.216
7002-0647			140	±2.0									0.239
7002-0648			160										0.271
7002-0649			180										0.303
7002-0650			200										0.334
7002-0651		Tr 20*4	90	±1.8	34	20	16	22				0.6	0.262
7002-0652			100										0.286
7002-0653			110										0.311
7002-0654			125										0.348
7002-0655			140	±2.0									0.385
7002-0656			160						60				0.430
7002-0657			180										0.470
7002-0658			200										0.529
7002-0659			220	±2.5									0.578
7002-0660			250										0.652
7002-0661		Tr 24*5	100	±1.8	42	24	20	25		10	10	0.7	0.416
7002-0662			110										0.451
7002-0663			125										0.505
7002-0664			140	±2.0									0.558
7002-0665			160						70				0.622
7002-0666			180										0.693
7002-0667			200										0.765
7002-0668			220	±2.5									0.836
7002-0669			250										0.942
7002-0670			280										1.049
7002-0671		Tr 30*6	125	±1.8	52	30	25	32		12		0.8	0.834
7002-0672			140	±2.0									0.917
7002-0673			160						80				1.018
7002-0674			180										1.130
7002-0675			200										1.240
7002-0676			220	±2.5									1.350
7002-0677			250										1.517
7002-0678			280										1.683
7002-0679			320	±3.0									1.905

Example designation of a swing bolt with trapezoidal thread, size Tr 16×4, length 70 mm:

Bolt 7002-0641 GOST 14725-69

Technical requirements

Material — steel grade 45 per GOST 1050-88. Substitution with other steel grades having mechanical properties not lower than those of steel grade 45 is permitted.

Hardness — 33…38 HRC.

Unspecified dimensional tolerances — h14.

Tolerances on perpendicularity of the head hole axis to the bolt shank axis — per accuracy grade 12 of GOST 24643-81.

Trapezoidal thread — per GOST 24738-81. Thread tolerance class — 8e per GOST 9562-81.

Chamfer dimensions for the thread — per GOST 10549-80.

Coating — chem. ox., oiled (coating designation per GOST 9.306-85). Other types of protective coatings are permitted by agreement with the customer.

Other technical requirements — per GOST 1759.0-87.

Marking: product name, its designation, the designation of this standard, and the manufacturer’s trademark. Marking is applied to the container or packaging for a batch of bolts of one size.

Corresponds to DIN 444.