DIN 966 Raised Countersunk Head Screw (Cross Recess)

The DIN 966 standard covers a raised countersunk head screw fitted with a cross recess. This is a widely used fastener, applied in industry, construction, furniture production and household use.

The screw has a full metric thread, and the part of the head protruding above the surface of the workpiece has a hemispherical shape. The fastener can have various recess types: cross recess variants Pozidriv, Philips, as well as a Torx recess shaped as a six-point star.

Manufacturing features and materials

The closest Russian equivalent to the DIN 966 standard is GOST 17474; in the international system such products are manufactured to the ISO 7047 standard. Equivalents may have design differences, which should be clarified when selecting fasteners.

The screw with full metric thread is designed for installation into a prepared hole, threaded or unthreaded; in the latter case it is used together with nuts and washers. Screws of this type are used to join products made of metal, plastic, wood, board-type wood materials, and more. The threaded connection is resistant to loads, and the fasteners have high strength.

Steel with a standard property class of 4.8 is used for manufacturing; the metal can additionally be fitted with a zinc, nickel or chrome coating. The protective film prevents oxidation from environmental exposure and protects the metal from corrosion.

For use in highly corrosive environments, fasteners made of stainless steel are suitable — alloys A2 and A4 with increased acid resistance, not subject to corrosion. Fasteners can also be made of non-ferrous metal alloys or plastic.

Application possibilities for the fastener

The DIN 966 screw is used in various sectors of industrial production: in machine building, automotive manufacturing, shipbuilding, and the production of industrial equipment, mechanisms and units. A threaded connection remains one of the most reliable options, especially when using corrosion-resistant materials.

The hemispherical raised countersunk head provides good decorative qualities: the fasteners do not spoil the appearance of the assembled product, and if needed the screw heads can be covered with decorative caps. This makes them suitable for furniture production, construction and finishing work. The fasteners provide a strong connection between various materials.

Terms for purchasing fasteners

FLOK supplies fasteners on wholesale and retail terms. Products can be ordered in batches with delivery to any region of Russia.

To select DIN 966 fasteners or a suitable equivalent, contact FLOK specialists for advice.

Size table

k	1.65	2.2	2.5	3
dk	5.6	7.5	9.2	11
f	0.75	1	1.25	1.5
n:o		2	2	3

L (mm)	d
	M3	M4	M5	M6
8
10
12
16
20
25
30
35
40

d	M2.5	M3	M4	M5	M6	M8
dk DIN/ISO	4.7	5.6	7.5/8.4	9.2/9.3	11/11.3	14.5/15.8
k DIN/ISO	1.5	1.65	2.2/2.7	2.5/2.7	3/3.3	4/4.65
f	0.6	0.75	1	1.25	1.5	2
m	1	1	2	2	3	4
b	18	19	22	25	28	34