Allen CSK
Allen CSK
Flat head screws are used for flush mounting of sections, usually where one part slides over another or one part is mounted on another. Countersunk head screws, like button heads and low heads, are limited by configuration in their tensile strength capability. Because of this, they should not be used in applications requiring full strength, where Socket Head Cap Screws should be used.
The head angle for metric countersunk socket screws is 90 degrees up to & including M20 and 60 degrees over M20. The head angle for Imperial is different – Unified is 82 degrees and British thread forms are 90 degrees.
Usage : Machine Guards, Hinges, Covers, multiple level assemblies etc.
Available in Hexagonal socket drive and the improved 6-Lobe (Hexalobular) drive.
Allen (Hex socket) Flat Head Screws are available as per ISO 10642 (similar to DIN 7991 which is now obsolete).
Hexagonal socket drive
SS-304 and SS-316 available in Black on request:
Also available in Unified Series
Additional Material options available below on request. Higher MOQ and longer lead times may apply.
DIN 7991 Allen CSK High Tensile Alloy Steel C3A05 – Download Datasheet
6-Lobe (Hexalobular or Torx) drive are as per ISO 14581
ISO 14581 CSK 6-Lobe SS-304 A2 B4B09 – Download Datasheet
ISO 14581 CSK 6-Lobe SS-316 A4 B6B09 – Download Datasheet
USAGE NOTES.
- Install in a countersunk hole matching the counter of the screw head.
- Do not overtighten. Keep within the suggested Torque values. Using a Torque control tool is recommended.
- Ensure assembly using a correct tool in good condition. Worn out tools can damage the socket.