Countersunk Cap 5/16 x 1.1/2 BSF Black Gr.10.9 BS 2470

Countersunk Cap Screw
Hexagon Head
Black Imperial BSF
High Tensile Grade 10.9
Dia: 5/16'
TPI: 22
Length: 1.1/2'
BS 2470
Allen Key Size: 3/16'
A BSF countersunk head shoulder cap screw is a specialized imperial fastener that combines a flush-fitting head with an unthreaded shoulder. This hybrid design is primarily a custom or non-standard item, as standard BSF fasteners typically feature either a countersunk head (for flush finish) or a shoulder (for pivoting) but not both in a standard configuration.