Ordering information
Confirm size, material, property class, finish, quantity and delivery requirements in your RFQ.
A flush-fitting countersunk head with an internal hexagon drive. Specify your requirements for a quotation.

ISO 10642:2026
Sizes in the standard are reference information. Availability and lead time are confirmed with your quotation.
Confirm size, material, property class, finish, quantity and delivery requirements in your RFQ.
Match the countersink to the screw head. Use the specified driver size and application-specific tightening instructions.
The countersunk head and socket geometry reduce loadability. Check the specified property class and the application requirements.

Internal hexagon drive for machine assembly; choose the head profile to suit clearance and seating requirements.

Internal hexagon drive for machine assembly; choose the head profile to suit clearance and seating requirements.

Internal hexagon drive for machine assembly; choose the head profile to suit clearance and seating requirements.
Compare head clearance, tool access and mounting geometry before specifying a screw for factory assembly.
Read bolt strength markings, compare nominal values, and prepare a specification that covers the complete joint.
Prepare drawings, acceptance requirements and delivery information so a custom fastener enquiry can be reviewed efficiently.
Request a Quote
Your selections will be carried into the RFQ form.