Grub Screw 3/8 x 5/8 BSF Black Gr.10.9 BS 2470

Grub Screw
Hexagon Head
Black Imperial BSF
High Tensile Grade 10.9
Dia: 3/8'
TPI: 20
Length: 5/8'
BS 2470
Allen Key Size: 3/16'
A BSF (British Standard Fine) 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. It features the BSF fine thread pitch, which is closer together than the coarse BSW (British Standard Whitworth) thread.