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Metal Mate® Imperial Bright Castle Nuts

Available in a Range of Sizes
Product ID: 31297

This product may be subject to an additional 1-2 day lead time. Please call us on 0121 379 8020 for clarification if prompt delivery is important to you.

Availability: Out of stock

£7.50

A castle nut, also called a castellated nut or slotted nut, is a nut with extensions that project past the opening. A cotter pin would then be used to lock the nut in place by tightening around the extensions, or it can be locked using any positive locking device. Castle nuts are often used in low-torque applications, such as holding wheel bearings in place.

Below is a table that shows the TPI (Threads per Inch) and the Pitch of the different thread types.

Size (inch) UNF BSF UNC BSW
TPI Pitch (inch) TPI Pitch (inch) TPI Pitch (inch) TPI Pitch (inch)
5/16 24 0.04 22 0.05 18 0.06 18 0.06
3/8 24 0.04 20 0.05 16 0.06 16 0.06
1/2 20 0.05 16 0.06 13 0.08 12 0.08
5/8 18 0.06 14 0.07 11 0.09 11 0.09
3/4 16 0.06 12 0.08 10 0.10 10 0.10
7/8 14 0.07 11 0.09 9 0.11 9 0.11
1 12 0.08 10 0.10 8 0.13 8 0.13
1.1/4 12 0.08 9 0.11 7 0.14 7 0.14

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