Lock Nuts - UNF Left Hand

Sometimes written as lock nuts, they also go by various other names, including half nuts, jam nuts and thin nuts.

Locknuts are used to lock a full nut in position to prevent it from working loose as a result of vibration or other factors.

Locknuts are often mixed up with Nyloc nuts, which are different. Nyloc nuts are self-locking nuts that feature a nylon collar in the top portion of the nut that locks the nut in place.

About UNF Left Hand Thread

UNF stands for Unified National Fine. It is a common imperial thread type with more threads per axial distance than its UNC equivalent.

Unified thread types (UNF and UNC) were introduced at the beginning of World War 2 to enable the interchangeability of machinery manufacturing between the USA, Canada and Great Britain. Still commonly found on a vast array of old machines and vehicles in the UK, UNF and UNC threads continue to be the standard thread in the USA and Canada.

A left hand thread is the terms used for a thread where the nut tightens in the opposite direction to normal. It is commonly used on items that rotate in a manner that could cause a normal right handed nut to loosen, for a example the pedal of a bicycle on the left hand side.

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7 Items

Code Product Name Info Pack Size Price Qty
1/4 LNUFZPL025 1/4" UNF Left Hand - Lock Nut Hexagon - BZP - Pack of 25
25
£26.15 £31.38
1/4 LNUFZPL025
1/4" UNF Left Hand - Lock Nut Hexagon - BZP - Pack of 25
25
£26.15 £31.38
1/4 LNUFZPL031 5/16" UNF Left Hand - Lock Nut Hexagon - BZP - Pack of 25
25
£26.69 £32.03
1/4 LNUFZPL031
5/16" UNF Left Hand - Lock Nut Hexagon - BZP - Pack of 25
25
£26.69 £32.03
1/4 LNUFZPL037 3/8" UNF Left Hand - Lock Nut Hexagon - BZP - Pack of 5
5
£13.55 £16.26
1/4 LNUFZPL037
3/8" UNF Left Hand - Lock Nut Hexagon - BZP - Pack of 5
5
£13.55 £16.26
1/4 LNUFZPL043 7/16" UNF Left Hand - Lock Nut Hexagon - BZP - Pack of 5
5
£15.55 £18.66
1/4 LNUFZPL043
7/16" UNF Left Hand - Lock Nut Hexagon - BZP - Pack of 5
5
£15.55 £18.66
1/4 LNUFZPL050 1/2" UNF Left Hand - Lock Nut Hexagon - BZP - Pack of 5
5
£25.09 £30.11
1/4 LNUFZPL050
1/2" UNF Left Hand - Lock Nut Hexagon - BZP - Pack of 5
5
£25.09 £30.11
1/4 LNUFZPL062 5/8" UNF Left Hand - Lock Nut Hexagon - BZP - Pack of 5
5
£25.56 £30.67
1/4 LNUFZPL062
5/8" UNF Left Hand - Lock Nut Hexagon - BZP - Pack of 5
5
£25.56 £30.67
1/4 LNUFZPL075 3/4" UNF Left Hand - Lock Nut Hexagon - BZP - Pack of 5
5
£26.90 £32.28
1/4 LNUFZPL075
3/4" UNF Left Hand - Lock Nut Hexagon - BZP - Pack of 5
5
£26.90 £32.28
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7 Items