ISO 4762 specifies the dimensions and tolerances for metric socket head cap screws (SHCS) with hexagonal sockets. These are commonly called Allen bolts or hex socket screws. They feature a cylindrical head with a recessed hex drive.

What is the head diameter of an M8 SHCS?

Per ISO 4762, an M8 socket head cap screw has a head diameter (dk) of 13.0 mm, head height of 8.0 mm, and uses a 6 mm hex key (Allen wrench).

What is the difference between ISO 4762 and DIN 912?

ISO 4762 replaced DIN 912. They are functionally identical for most sizes, but ISO 4762 is the current international standard. Some minor tolerance differences exist on larger sizes.

What property class are SHCS typically?

Standard socket head cap screws per ISO 4762 are property class 12.9 (Rm = 1220 MPa, Rp = 1100 MPa). Some manufacturers also offer 8.8 and 10.9 versions.

When should I use socket head cap screws instead of hex bolts?

Use SHCS when: (1) space is limited and a low-profile head is needed, (2) the head must be recessed/counterbored, (3) higher strength is required (12.9 vs typical 8.8), or (4) a cleaner aesthetic is desired.

मुक्त अभियांत्रिकी साधन

सॉकेट हेड कॅप स्क्रू — ISO 4762

ISO 4762 / DIN 912 नुसार मेट्रिक सॉकेट हेड कॅप स्क्रू (Allen bolts) चे परिमाण पहा. हेड व्यास, उंची, हेक्स की आणि वस्तुमान पाहण्यासाठी आकार निवडा.

ISO 4762DIN 912Class 12.9

Results

अंदाजित वस्तुमान

—

हेड व्यास (dk)

—

हेड उंची (k)

—

हेक्स की आकार

—

काउंटरबोर व्यास (शिफारसीय)

—

ISO 4762 परिमाणे

आकार	dk (mm)	k (mm)	हेक्स की
M3	5.5	3.0	2.5
M4	7.0	4.0	3
M5	8.5	5.0	4
M6	10.0	6.0	5
M8	13.0	8.0	6
M10	16.0	10.0	8
M12	18.0	12.0	10
M16	24.0	16.0	14
M20	30.0	20.0	17
M24	36.0	24.0	19

मोकळीकसाठी काउंटरबोर व्यास साधारणपणे dk + 1 mm असतो.

Socket Head Cap Screw ISO 4762 Dimensions | Free Online Tool

Published by Nikolai Shelkovenko on फेब्रुवारी 15, 2026 फेब्रुवारी 15, 2026

Results

ISO 4762 परिमाणे

Shop

आधार

Contact