Products - Socket Countersunk Head Screws


Socket Countersunk Head Screws, Flat Head, Unified, Metric, BA, UNC, BSW, BSF, UNF, Fine Pitch, Course, Six Lobe, C/SK Screws, Countersunk Head

Socket Countersunk Head Screws

Socket Countersunk Head Screws are heat-treated to give a material strength grade of 12.9. Due , However, to the head geometry the service load ability in application is equivalent to strength grade of 10.9.

The included head angle for metric Socket Countersunk Head Screws to DIN 7991 up to and including M20 is 90° and over M20 60°. BS 4168, however, specifies 90° for M24 & above so care needs to be exercised here.

Inch products have a different head angle. Unified are 80° and British 90°.