Hobson BSW Socket Head Shoulder Screw, Plain, 3/8 x 1/2 x 1, Box of 25

This Hobson item is a BSW (British Standard Whitworth) socket head shoulder screw, plain finish. A shoulder screw has an unthreaded shoulder under the head, then a smaller threaded section. Shoulder length is the length of the shoulder, not the length of the thread.

BSW means British Thread Standard Whitworth and TPI means threads per inch. Supplied as a box of 25.

Where this product is used

• Where the unthreaded shoulder under the head is wanted as a locating or bearing surface
• Driven from the socket in the head with a matching key or bit
• Replacing a shoulder screw with the same shoulder diameter, shoulder length and thread

Features

• 1 item: 3/8 x 1/2 x 1
• BSW thread, socket head shoulder screw
• Plain finish
• Supplied as a box of 25

Key specifications

Choosing the right option

Choose the thread form first: the screw must match its nut or tapped hole in thread form, diameter and pitch. Sizes are nominal diameters in inches; compare the threads per inch with your thread.

Related socket screws: Hobson Metric Socket Head Shoulder Screw, Grade 12.9 Alloy Steel, Plain, M5 to M20 and Hobson UNC Socket Head Shoulder Screw, Alloy Steel, Plain, #10-24 to 1/2".