ISO 4762 dimensions
Hexagon socket head cap screws — the ISO standard matching DIN 912.
The ISO standard. DIN 912 is the DIN number for the same part.
What ISO 4762 is
ISO 4762 covers the same socket head cap screw as DIN 912. Unlike the hex head pair, these two agree: the socket sizes and head dimensions match, and suppliers list them together as "DIN 912 / ISO 4762".
ISO 4762 dimensions, M2 to M24
| Size | Pitch | Hex key | Clearance hole | Tapping drill |
|---|---|---|---|---|
| M2 | 0.4 mm | 1.5 mm | 2.4 mm | 1.6 mm |
| M2.5 | 0.45 mm | 2 mm | 2.9 mm | 2.05 mm |
| M3 | 0.5 mm | 2.5 mm | 3.4 mm | 2.5 mm |
| M4 | 0.7 mm | 3 mm | 4.5 mm | 3.3 mm |
| M5 | 0.8 mm | 4 mm | 5.5 mm | 4.2 mm |
| M6 | 1 mm | 5 mm | 6.6 mm | 5 mm |
| M8 | 1.25 mm | 6 mm | 9 mm | 6.75 mm |
| M10 | 1.5 mm | 8 mm | 11 mm | 8.5 mm |
| M12 | 1.75 mm | 10 mm | 13.5 mm | 10.25 mm |
| M14 | 2 mm | 12 mm | 15.5 mm | 12 mm |
| M16 | 2 mm | 14 mm | 17.5 mm | 14 mm |
| M20 | 2.5 mm | 17 mm | 22 mm | 17.5 mm |
| M24 | 3 mm | 19 mm | 26 mm | 21 mm |
ISO 4762 against DIN 912
These two agree. ISO 4762 and DIN 912 describe the same socket head cap screw, take the same hex key, and suppliers list them on one line as "ISO 4762 / DIN 912". Ordering by either number gets the same part.
Frequently asked questions
What is ISO 4762?
Hexagon socket head cap screws — the ISO standard matching DIN 912. It is the ISO standard covering the same fastener as DIN 912.
Is ISO 4762 the same as DIN 912?
Yes, for practical purposes. ISO 4762 and DIN 912 describe the same socket head cap screw and suppliers list them together. A part sold as one will fit where the other is specified.
What size hex key does an M10 ISO 4762 take?
8 mm. Socket head cap screws are driven by a hex key rather than a spanner, and the socket size follows the thread rather than the head.
Is ISO 4762 still current?
Yes. ISO 4762 is the current international standard; DIN 912 is the withdrawn German one that preceded it. Suppliers still sell and label parts by the DIN number because that is what customers ask for.
Other fastener standards
- DIN 934 — Hexagon nuts — the plain hex nut
- ISO 4032 — Hexagon regular nuts, style 1 — the ISO standard that replaced DIN 934
- DIN 933 — Hexagon head bolts threaded all the way to the head — DIN’s own title calls these “set screws”, which today reads as a grub screw and is not what this is
- ISO 4017 — Hexagon head screws, fully threaded — the ISO standard that replaced DIN 933
- DIN 931 — Hexagon head bolts, partially threaded — a plain shank under the head
Every fastener standard here · Metric thread sizes · Tap drill sizes · Spanner sizes