Grub Screw 1/2 x 7/8 (12tpi) BSW Black Gr.10.9 BS 2470
Grub Screw
Hexagon Head
Black Imperial BSW
High Tensile Grade 10.9
Dia: 1/2'
TPI: 12
Length: 7/8'
BS 2470
Allen Key Size: 1/4'
A BSW (British Standard Whitworth) grub screw, also known as a socket set screw, is a headless, fully threaded imperial fastener used to secure components—such as gears, pulleys, or collars—onto a shaft.