WHITWORTH Machine Screws

Whitworth machine screws are a type of fastener that follows the Whitworth thread standard.  While the metric system is now more commonly used worldwide, Whitworth threads are still found in certain applications, particularly in older machinery and equipment.

Whitworth machine screws have a distinct thread profile characterized by a 55-degree included angle and a rounded crest and root.

We stock them in Round Slotted and CSK Slotted heads, in zinc, stainess, self colour and brass. Sizes include 1/4", 5/16", 3/8", 1/2", 5/8".  Other head options and sizes can be sourced.