Lock Nuts - UNF

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. A common area in which lock nuts are used is on car wheels.

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 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.

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16 Items

Code Product Name Info Pack Size Price Qty
3/4 LNUFA2075 3/4" UNF - Lock Nut Hexagon BS 1768 - A2 Stainless Steel
1
£14.78 £17.74
3/4 LNUFA2075
3/4" UNF - Lock Nut Hexagon BS 1768 - A2 Stainless Steel
1
£14.78 £17.74
3/4 LNUFA2087 7/8" UNF - Lock Nut Hexagon - A2 Stainless Steel
1
£21.64 £25.97
3/4 LNUFA2087
7/8" UNF - Lock Nut Hexagon - A2 Stainless Steel
1
£21.64 £25.97
3/4 LNUFA4025 1/4" UNF - Lock Nut Hexagon - A4 Stainless Steel - Pack of 10
10
£40.56 £48.67
3/4 LNUFA4025
1/4" UNF - Lock Nut Hexagon - A4 Stainless Steel - Pack of 10
10
£40.56 £48.67
3/4 LNUFA4037 3/8" UNF - Lock Nut Hexagon - A4 Stainless Steel - Pack of 25
25
£42.80 £51.36
3/4 LNUFA4037
3/8" UNF - Lock Nut Hexagon - A4 Stainless Steel - Pack of 25
25
£42.80 £51.36
3/4 LNUFA4050 1/2" UNF - Lock Nut Hexagon - A4 Stainless Steel - Pack of 5
5
£30.25 £36.30
3/4 LNUFA4050
1/2" UNF - Lock Nut Hexagon - A4 Stainless Steel - Pack of 5
5
£30.25 £36.30
3/4 LNUFA4062 5/8" UNF - Lock Nut Hexagon - A4 Stainless Steel - Pack of 5
5
£39.60 £47.52
3/4 LNUFA4062
5/8" UNF - Lock Nut Hexagon - A4 Stainless Steel - Pack of 5
5
£39.60 £47.52
1/4 LNUFBR025 1/4" UNF - Lock Nut Hexagon - Brass - Pack of 25
25
£10.63 £12.76
1/4 LNUFBR025
1/4" UNF - Lock Nut Hexagon - Brass - Pack of 25
25
£10.63 £12.76
1/4 LNUFBR112 1 1/8" UNF - Lock Nut Hexagon - Brass
1
£106.25 £127.50
1/4 LNUFBR112
1 1/8" UNF - Lock Nut Hexagon - Brass
1
£106.25 £127.50
1/4 LNUFSC025 1/4" UNF - Lock Nut Hexagon Grade 1 BS 1768 - Self Colour - Pack of 25
25
£6.46 £7.75
1/4 LNUFSC025
1/4" UNF - Lock Nut Hexagon Grade 1 BS 1768 - Self Colour - Pack of 25
25
£6.46 £7.75
1/4 LNUFSC031 5/16" UNF - Lock Nut Hexagon Grade 1 BS 1768 - Self Colour - Pack of 25
25
£7.14 £8.57
1/4 LNUFSC031
5/16" UNF - Lock Nut Hexagon Grade 1 BS 1768 - Self Colour - Pack of 25
25
£7.14 £8.57
1/4 LNUFSC043 7/16" UNF - Lock Nut Hexagon Grade 1 BS 1768 - Self Colour - Pack of 25
25
£19.05 £22.86
1/4 LNUFSC043
7/16" UNF - Lock Nut Hexagon Grade 1 BS 1768 - Self Colour - Pack of 25
25
£19.05 £22.86
1/4 LNUFSC050 1/2" UNF - Lock Nut Hexagon Grade 1 BS 1768 - Self Colour - Pack of 25
25
£23.84 £28.61
1/4 LNUFSC050
1/2" UNF - Lock Nut Hexagon Grade 1 BS 1768 - Self Colour - Pack of 25
25
£23.84 £28.61
5/16 LNUFZP031 5/16" UNF - Lock Nut Hexagon Grade 1 BS 1768 - BZP - Pack of 25
25
£8.93 £10.72
5/16 LNUFZP031
5/16" UNF - Lock Nut Hexagon Grade 1 BS 1768 - BZP - Pack of 25
25
£8.93 £10.72
5/16 LNUFZP043 7/16" UNF - Lock Nut Hexagon Grade 1 BS 1768 - BZP - Pack of 25
25
£23.79 £28.55
5/16 LNUFZP043
7/16" UNF - Lock Nut Hexagon Grade 1 BS 1768 - BZP - Pack of 25
25
£23.79 £28.55
5/16 LNUFZP056 9/16" UNF - Lock Nut Hexagon Grade 1 BS 1768 - BZP - Pack of 5
5
£12.10 £14.52
5/16 LNUFZP056
9/16" UNF - Lock Nut Hexagon Grade 1 BS 1768 - BZP - Pack of 5
5
£12.10 £14.52
5/16 LNUFZP075 3/4" UNF - Lock Nut Hexagon Grade 1 BS 1768 - BZP - Pack of 5
5
£22.16 £26.59
5/16 LNUFZP075
3/4" UNF - Lock Nut Hexagon Grade 1 BS 1768 - BZP - Pack of 5
5
£22.16 £26.59
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16 Items