Get the same great locking capability of a full height Security Locknut in a Jam / Thin height pattern. Unlike with traditional Jam nuts, Security Locknut Jam nuts do not require an additional full sized nut (double-nutting) for fastening. Because of the unique spring steel insert design, Jam / Thin height Security Locknuts are able to deliver full locking power even in a lower profile nut body. Saving you time, money, and aggravation, Jam / Thin height pattern Security Locknuts are ideal for applications with tight clearances or where fastener weight is of concern.

Designated with a "T" at the end of a standard Security Locknut part number, Jam / Thin height Security Locknuts are generally available from stock in Grade 5 and Grade 8* equivalents, Course (UNC) and Fine (UNF) Thread sizes 3/8" - 3", and Full or Heavy patterns as well as in special custom styles designed to meet your unique needs.

*For Grade 8 equivalent part numbers, just add a "G8" to the end of the standard part number.