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Aluminium Socket Countersunk Screws are created to DIN 7991 standard and feature a hexagonal recess. They are driven using a hex wrench or insert bit, which makes them more efficient than slotted products.
The hex socket drive has a higher resistance to cam out and can be used with power drives, which enables faster use and higher achievable torque.
Countersunk screws are often used in applications that require an aesthetically pleasing finish as they sit flush in the target housing.
They are designed to be used in pre-drilled countersunk recesses.
There are a number of variants available also, including vented and captive.
Available from Fastenright as standard in M2 to M36 and in lengths from 3mm upwards, with specials available to order. Imperial diameters are also available.
Non-standard sizes are available to order as specials, including custom parts made to drawings.
| Metric Technical Information & Available Sizes |
||||||
| Thread Diameter | d2 (mm) | K max. (mm) | S min. (mm) | t (mm) | Pitch (mm) | Available Lengths |
| M2 |
4.0 | 1.2 | 1.27 | CALL | 0.40 | From 3mm | ||||||
| M2.5 | 5.0 | 1.45 | 1.5 | CALL | 0.45 | From 3mm | ||||||
| M3 | 6.0 | 1.7 | 2.0 | 1.2 | 0.50 | From 4mm | ||||||
| M3.5 | 7.0 | CALL | CALL | CALL | CALL | From 5mm | ||||||
| M4 | 8.0 | 2.3 | 2.5 | 1.8 | 0.70 | From 4mm | ||||||
| M5 | 10.0 | 2.8 | 3.0 | 2.3 | 0.80 | From 6mm | ||||||
| M6 | 12.0 | 3.3 | 4.0 | 2.5 | 1.00 | From 8mm | ||||||
| M8 | 16.0 | 4.4 | 5.0 | 3.5 | 1.25 | From 10mm | ||||||
| M10 | 20.0 | 5.5 | 6.0 | CALL | 1.50 | From 12mm | ||||||
| M12 | 24.0 | 6.5 | 8.0 | CALL | 1.75 | From 16mm | ||||||
| M14 | 27.0 | 7.0 | 10.0 | CALL | 2.00 | From 25mm | ||||||
| M16 | 30.0 | 7.5 | 10.0 | CALL | 2.00 | From 20mm | ||||||
| M18 | 33.0 | 8.0 | 10.0 | CALL | 2.50 | From 40mm | ||||||
| M20 | 36.0 | 8.5 | 12.0 | CALL | 2.50 | From 30mm | ||||||
| M22 | 36.0 | 13.1 | 14.0 | CALL | 2.50 | From 40mm | ||||||
| M24 | 39.0 | 14.0 | 14.0 | CALL | 3.00 | From 30mm | ||||||
| M27 | CALL | CALL | CALL | CALL | 3.00 | CALL | ||||||
| M30 | CALL | CALL | CALL | CALL | 3.50 | CALL | ||||||
| M36 | CALL | CALL | CALL | CALL | 4.00 | CALL | ||||||
| Size not listed? Please make an enquiry – we may be able to provide it. | ||||||||||||
