Lock Nuts - BSF

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.

BSF (British Standard Fine) is an imperial thread Introduced as a fine-pitch alternative to BSW and commonly used in engineering and automotive applications in the UK.  It was superseded by the UNF thread type in the 1940’s.

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21 Items

Code Product Name Info Pack Size Price Qty
3/8 LNBFA4037 3/8" BSF - Lock Nut Hexagon - A4 Stainless Steel - Pack of 5
5
£11.55 £13.86
3/8 LNBFA4037
3/8" BSF - Lock Nut Hexagon - A4 Stainless Steel - Pack of 5
5
£11.55 £13.86
3/8 LNBFA4075 3/4" BSF - Lock Nut Hexagon - A4 Stainless Steel - Pack of 5
5
£61.35 £73.62
3/8 LNBFA4075
3/4" BSF - Lock Nut Hexagon - A4 Stainless Steel - Pack of 5
5
£61.35 £73.62
5/8 LNBFBS075 3/4" BSF - Lock Nut Hexagon BS 1083 - Bright - Pack of 5
5
£11.69 £14.03
5/8 LNBFBS075
3/4" BSF - Lock Nut Hexagon BS 1083 - Bright - Pack of 5
5
£11.69 £14.03
5/8 LNBFBS112 1 1/8" BSF - Lock Nut Hexagon - Bright
1
£21.06 £25.27
5/8 LNBFBS112
1 1/8" BSF - Lock Nut Hexagon - Bright
1
£21.06 £25.27
5/8 LNBFBS125 1 1/4" BSF - Lock Nut Hexagon - Bright - Pack of 5
5
£21.06 £25.27
5/8 LNBFBS125
1 1/4" BSF - Lock Nut Hexagon - Bright - Pack of 5
5
£21.06 £25.27
5/8 LNBFBS150 1 1/2" BSF - Lock Nut Hexagon BS 1083 - Bright - Pack of 2
2
£61.04 £73.25
5/8 LNBFBS150
1 1/2" BSF - Lock Nut Hexagon BS 1083 - Bright - Pack of 2
2
£61.04 £73.25
5/8 LNBFBS200 2" BSF - Lock Nut Hexagon BS 1083 - Bright
1
£21.15 £25.38
5/8 LNBFBS200
2" BSF - Lock Nut Hexagon BS 1083 - Bright
1
£21.15 £25.38
5/8 LNBFSC025 1/4" BSF - Lock Nut Hexagon Grade P BS 1083 - Self Colour - Pack of 50
50
£10.14 £12.17
5/8 LNBFSC025
1/4" BSF - Lock Nut Hexagon Grade P BS 1083 - Self Colour - Pack of 50
50
£10.14 £12.17
5/8 LNBFSC031 5/16" BSF - Lock Nut Hexagon Grade P BS 1083 - Self Colour - Pack of 50
50
£10.08 £12.09
5/8 LNBFSC031
5/16" BSF - Lock Nut Hexagon Grade P BS 1083 - Self Colour - Pack of 50
50
£10.08 £12.09
5/8 LNBFSC037 3/8" BSF - Lock Nut Hexagon Grade P BS 1083 - Self Colour - Pack of 50
50
£10.04 £12.05
5/8 LNBFSC037
3/8" BSF - Lock Nut Hexagon Grade P BS 1083 - Self Colour - Pack of 50
50
£10.04 £12.05
5/8 LNBFSC043 7/16" BSF - Lock Nut Hexagon Grade P BS 1083 - Self Colour - Pack of 25
25
£17.50 £21.00
5/8 LNBFSC043
7/16" BSF - Lock Nut Hexagon Grade P BS 1083 - Self Colour - Pack of 25
25
£17.50 £21.00
5/8 LNBFSC075 3/4" BSF - Lock Nut Hexagon Grade P BS 1083 - Self Colour - Pack of 5
5
£19.26 £23.11
5/8 LNBFSC075
3/4" BSF - Lock Nut Hexagon Grade P BS 1083 - Self Colour - Pack of 5
5
£19.26 £23.11
5/8 LNBFSC100 1" BSF - Lock Nut Hexagon BS 1083 Double Chamfer - Self Colour - Pack of 5
5
£16.14 £19.37
5/8 LNBFSC100
1" BSF - Lock Nut Hexagon BS 1083 Double Chamfer - Self Colour - Pack of 5
5
£16.14 £19.37
5/8 LNBFSC150 1 1/2" BSF - Lock Nut Hexagon - Self Colour - Pack of 4
4
£29.80 £35.76
5/8 LNBFSC150
1 1/2" BSF - Lock Nut Hexagon - Self Colour - Pack of 4
4
£29.80 £35.76
5/8 LNBFSC200P 2" BSF - Lock Nut Hexagon Grade P - Self Colour
1
£13.00 £15.60
5/8 LNBFSC200P
2" BSF - Lock Nut Hexagon Grade P - Self Colour
1
£13.00 £15.60
1/4 LNBFZP025 1/4" BSF - Lock Nut Hexagon Grade P BS 1083 - BZP - Pack of 50
50
£10.00 £12.00
1/4 LNBFZP025
1/4" BSF - Lock Nut Hexagon Grade P BS 1083 - BZP - Pack of 50
50
£10.00 £12.00
1/4 LNBFZP031 5/16" BSF - Lock Nut Hexagon Grade P BS 1083 - BZP - Pack of 50
50
£10.18 £12.21
1/4 LNBFZP031
5/16" BSF - Lock Nut Hexagon Grade P BS 1083 - BZP - Pack of 50
50
£10.18 £12.21
1/4 LNBFZP037 3/8" BSF - Lock Nut Hexagon Grade P BS 1083 - BZP - Pack of 50
50
£12.56 £15.07
1/4 LNBFZP037
3/8" BSF - Lock Nut Hexagon Grade P BS 1083 - BZP - Pack of 50
50
£12.56 £15.07
1/4 LNBFZP043 7/16" BSF - Lock Nut Hexagon Grade P BS 1083 - BZP - Pack of 25
25
£21.88 £26.26
1/4 LNBFZP043
7/16" BSF - Lock Nut Hexagon Grade P BS 1083 - BZP - Pack of 25
25
£21.88 £26.26
1/4 LNBFZP062 5/8" BSF - Lock Nut Hexagon Grade P BS 1083 - BZP - Pack of 25
25
£43.43 £52.12
1/4 LNBFZP062
5/8" BSF - Lock Nut Hexagon Grade P BS 1083 - BZP - Pack of 25
25
£43.43 £52.12
1/4 LNBFZP075 3/4" BSF - Lock Nut Hexagon Grade P BS 1083 - BZP - Pack of 5
5
£24.08 £28.90
1/4 LNBFZP075
3/4" BSF - Lock Nut Hexagon Grade P BS 1083 - BZP - Pack of 5
5
£24.08 £28.90
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21 Items