DIN 922 Flat Reduced Head Screw with Cylindrical Pivot

The German standard DIN 922 covers a screw with a reduced-size flat head and a cylindrical pivot for the strongest connection of parts. The shank is fitted with full metric thread. The thread diameter ranges from M1.4 to M10. The main application areas are mechanical and machine-tool engineering; such fasteners are used in the assembly of various mechanisms and units. They are installed into a pre-tapped hole.

Materials

Under DIN 922, screws are made of steel with property class 5.8, with the option of an additional protective coating of zinc, nickel or chromium. For enhanced corrosion resistance, screws are made of acid-resistant stainless steel A2 and A4. Fasteners of this type are used in environments with increased chemical aggressiveness. Production from brass and other non-ferrous alloys is also possible.

Uncoated and coated screws are used in industrial facility settings, in the assembly of vehicles and other mechanisms. The fastener products are available in retail and wholesale lots.

Dimensions of DIN 922 flat reduced head screws with cylindrical pivot, in mm:

d	M1.4	M1.6	M2	M2.5	M3	M3.5	M4	M5	M6	M8	M10
dp	0.8	0.8	1.2	1.5	2	2.5	2.8	3.5	4.5	6	7.5
dk	2	2.3	2.8	3.5	4	4.5	5.5	6.5	8	10	13
k	0.9	1	1.2	1.5	1.8	2	2.4	2.7	3.1	3.8	4.6
n	0.25	0.3	0.3	0.4	0.5	0.5	0.6	0.8	1	1.2	1.6