Lock Nuts - UNC

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 UNC Thread

UNC stands for Unified National Coarse. It is a common imperial thread type with less threads per axial distance than its UNF 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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25 Items

Code Product Name Info Pack Size Price Qty
1/4 LNUCA2025 1/4" UNC - Lock Nut Hexagon BS 1768 - A2 Stainless Steel - Pack of 25
25
£15.19 £18.23
1/4 LNUCA2025
1/4" UNC - Lock Nut Hexagon BS 1768 - A2 Stainless Steel - Pack of 25
25
£15.19 £18.23
1/4 LNUCA2037 3/8" UNC - Lock Nut Hexagon BS 1768 - A2 Stainless Steel - Pack of 25
25
£32.58 £39.10
1/4 LNUCA2037
3/8" UNC - Lock Nut Hexagon BS 1768 - A2 Stainless Steel - Pack of 25
25
£32.58 £39.10
1/4 LNUCA2043 7/16" UNC - Lock Nut Hexagon BS 1768 - A2 Stainless Steel - Pack of 5
5
£16.19 £19.43
1/4 LNUCA2043
7/16" UNC - Lock Nut Hexagon BS 1768 - A2 Stainless Steel - Pack of 5
5
£16.19 £19.43
1/4 LNUCA2050 1/2" UNC - Lock Nut Hexagon BS 1768 - A2 Stainless Steel - Pack of 5
5
£16.19 £19.43
1/4 LNUCA2050
1/2" UNC - Lock Nut Hexagon BS 1768 - A2 Stainless Steel - Pack of 5
5
£16.19 £19.43
1/4 LNUCA2062 5/8" UNC - Lock Nut Hexagon BS 1768 - A2 Stainless Steel - Pack of 5
5
£37.96 £45.55
1/4 LNUCA2062
5/8" UNC - Lock Nut Hexagon BS 1768 - A2 Stainless Steel - Pack of 5
5
£37.96 £45.55
1/4 LNUCA2075 3/4" UNC - Lock Nut Hexagon - A2 Stainless Steel
1
£12.85 £15.42
1/4 LNUCA2075
3/4" UNC - Lock Nut Hexagon - A2 Stainless Steel
1
£12.85 £15.42
1/4 LNUCA4025 1/4" UNC - Lock Nut Hexagon - A4 Stainless Steel - Pack of 5
5
£14.74 £17.69
1/4 LNUCA4025
1/4" UNC - Lock Nut Hexagon - A4 Stainless Steel - Pack of 5
5
£14.74 £17.69
1/4 LNUCA4031 5/16" UNC - Lock Nut Hexagon - A4 Stainless Steel - Pack of 5
5
£14.74 £17.69
1/4 LNUCA4031
5/16" UNC - Lock Nut Hexagon - A4 Stainless Steel - Pack of 5
5
£14.74 £17.69
1/4 LNUCA4037 3/8" UNC - Lock Nut Hexagon - A4 Stainless Steel - Pack of 5
5
£15.99 £19.19
1/4 LNUCA4037
3/8" UNC - Lock Nut Hexagon - A4 Stainless Steel - Pack of 5
5
£15.99 £19.19
1/4 LNUCA4043 7/16" UNC - Lock Nut Hexagon - A4 Stainless Steel - Pack of 5
5
£19.95 £23.94
1/4 LNUCA4043
7/16" UNC - Lock Nut Hexagon - A4 Stainless Steel - Pack of 5
5
£19.95 £23.94
1/4 LNUCA4050 1/2" UNC - Lock Nut Hexagon - A4 Stainless Steel - Pack of 5
5
£20.61 £24.73
1/4 LNUCA4050
1/2" UNC - Lock Nut Hexagon - A4 Stainless Steel - Pack of 5
5
£20.61 £24.73
1/4 LNUCA4062 5/8" UNC - Lock Nut Hexagon - A4 Stainless Steel - Pack of 5
5
£22.76 £27.31
1/4 LNUCA4062
5/8" UNC - Lock Nut Hexagon - A4 Stainless Steel - Pack of 5
5
£22.76 £27.31
1 LNUCBS100 1" UNC - Lock Nut Hexagon BS 1768 - Bright
1
£14.40 £17.28
1 LNUCBS100
1" UNC - Lock Nut Hexagon BS 1768 - Bright
1
£14.40 £17.28
1 LNUCBS112 1 1/8" UNC - Lock Nut Hexagon BS 1768 - Bright
1
£29.56 £35.47
1 LNUCBS112
1 1/8" UNC - Lock Nut Hexagon BS 1768 - Bright
1
£29.56 £35.47
1 LNUCDCSC125 1 1/4" UNC - Lock Nut Hexagon Double Chamfer - Self Colour - Pack of 5
5
£33.88 £40.66
1 LNUCDCSC125
1 1/4" UNC - Lock Nut Hexagon Double Chamfer - Self Colour - Pack of 5
5
£33.88 £40.66
1 LNUCSC025 1/4" UNC - Lock Nut Hexagon Grade 1 BS 1768 - Self Colour - Pack of 25
25
£6.46 £7.75
1 LNUCSC025
1/4" UNC - Lock Nut Hexagon Grade 1 BS 1768 - Self Colour - Pack of 25
25
£6.46 £7.75
1 LNUCSC031 5/16" UNC - Lock Nut Hexagon Grade 1 BS 1768 - Self Colour - Pack of 25
25
£7.14 £8.57
1 LNUCSC031
5/16" UNC - Lock Nut Hexagon Grade 1 BS 1768 - Self Colour - Pack of 25
25
£7.14 £8.57
1 LNUCSC037 3/8" UNC - Lock Nut Hexagon Grade 1 BS 1768 - Self Colour - Pack of 25
25
£10.00 £12.00
1 LNUCSC037
3/8" UNC - Lock Nut Hexagon Grade 1 BS 1768 - Self Colour - Pack of 25
25
£10.00 £12.00
1 LNUCSC043 7/16" UNC - Lock Nut Hexagon Grade 1 BS 1768 - Self Colour - Pack of 25
25
£19.05 £22.86
1 LNUCSC043
7/16" UNC - Lock Nut Hexagon Grade 1 BS 1768 - Self Colour - Pack of 25
25
£19.05 £22.86
1 LNUCSC050 1/2" UNC - Lock Nut Hexagon Grade 1 BS 1768 - Self Colour - Pack of 25
25
£29.56 £35.47
1 LNUCSC050
1/2" UNC - Lock Nut Hexagon Grade 1 BS 1768 - Self Colour - Pack of 25
25
£29.56 £35.47
1 LNUCSC062 5/8" UNC - Lock Nut Hexagon Grade 1 BS 1768 - Self Colour - Pack of 5
5
£12.31 £14.77
1 LNUCSC062
5/8" UNC - Lock Nut Hexagon Grade 1 BS 1768 - Self Colour - Pack of 5
5
£12.31 £14.77
3/8 LNUCZP037 3/8" UNC - Lock Nut Hexagon Grade 1 BS 1768 - BZP - Pack of 25
25
£12.44 £14.93
3/8 LNUCZP037
3/8" UNC - Lock Nut Hexagon Grade 1 BS 1768 - BZP - Pack of 25
25
£12.44 £14.93
3/8 LNUCZP062 5/8" UNC - Lock Nut Hexagon Grade 1 BS 1768 - BZP - Pack of 5
5
£12.31 £14.77
3/8 LNUCZP062
5/8" UNC - Lock Nut Hexagon Grade 1 BS 1768 - BZP - Pack of 5
5
£12.31 £14.77
3/8 LNUCZY037 3/8" UNC - Lock Nut Hexagon - YBZP - Pack of 25
25
£6.27 £7.52
3/8 LNUCZY037
3/8" UNC - Lock Nut Hexagon - YBZP - Pack of 25
25
£6.27 £7.52
3/8 LNUCZY062 5/8" UNC - Lock Nut Hexagon - YBZP - Pack of 5
5
£12.31 £14.77
3/8 LNUCZY062
5/8" UNC - Lock Nut Hexagon - YBZP - Pack of 5
5
£12.31 £14.77
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25 Items