Button Head Cap Screw
Hexagon Socket Button Head
Imperial BSW
Steel Grade 10.9
Dia: 5/16'
Length: 1'
Tpi: 18
BS 2470
Allen Key Size: 3/16'
A BSW (British Standard Whitworth) socket button head cap screw is an imperial-sized fastener with a low-profile, domed head and an internal hexagonal drive, designed primarily for aesthetic applications and where a standard cap screw's height is problematic.
