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.

Hexagonal socket drive

DIN 7991 Allen CSK SS-304 A2 – Download Datasheet
DIN 7991 Allen CSK SS-316 A4 – Download Datasheet
DIN 7991 Allen CSK High Tensile Alloy Steel – Download Datasheet
DIN 7991 Allen CSK Titanium Gr-2 – Download Datasheet
ISO 10642 Allen CSK SS-304 A2 – Download Datasheet
ISO 10642 Allen CSK SS-316 A4 – Download Datasheet

6-Lobe (Hexalobular or Torx) drive

ISO 10642 CSK 6-Lobe SS-304 A2 – Download Datasheet

ISO 10642 CSK 6-Lobe SS-316 A4 – 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.