Castle Nuts - BSF

Often called an axle nut as this is where they are most commonly found, a castle nut is a slotted hexagon nut with turrets on the top which resemble a castle wall. Castle nuts are used in conjunction with bolts that have holes in the end through which a locking pin can pass to lock the nut into position and prevent any further rotation. The locking pin is usually a split cotter pin, an R clip, a spring pin or a safety wire.

The diameter of the castellated section is slightly smaller than the main wrenching section of the nut (unlike a slotted nut where the diameter of the castellated section is the same as the main wrenching part).

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  It was superseded by the UNF thread type in the 1940’s.

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8 Items

Code Product Name Info Pack Size Price Qty
1 CNBFA4100 1" BSF - Castle Nut - A4 Stainless Steel
1
£20.24 £24.29
1 CNBFA4100
1" BSF - Castle Nut - A4 Stainless Steel
1
£20.24 £24.29
1 CNBFSC075 3/4" BSF - Castle Nut - Self Colour - Pack of 5
5
£13.94 £16.73
1 CNBFSC075
3/4" BSF - Castle Nut - Self Colour - Pack of 5
5
£13.94 £16.73
1 CNBFSC087 7/8" BSF - Castle Nut - Self Colour - Pack of 5
5
£29.36 £35.23
1 CNBFSC087
7/8" BSF - Castle Nut - Self Colour - Pack of 5
5
£29.36 £35.23
1 CNBFSC100 1" BSF - Castle Nut - Self Colour
1
£17.13 £20.56
1 CNBFSC100
1" BSF - Castle Nut - Self Colour
1
£17.13 £20.56
1 CNBFSC112 1 1/8" BSF - Castle Nut - Self Colour
1
£10.75 £12.90
1 CNBFSC112
1 1/8" BSF - Castle Nut - Self Colour
1
£10.75 £12.90
1 CNBFSC137 1 3/8" BSF - Castle Nut - Self Colour
1
£17.70 £21.24
1 CNBFSC137
1 3/8" BSF - Castle Nut - Self Colour
1
£17.70 £21.24
3/8 CNBFZP037 3/8" BSF - Castle Nut - BZP - Pack of 25
25
£18.00 £21.60
3/8 CNBFZP037
3/8" BSF - Castle Nut - BZP - Pack of 25
25
£18.00 £21.60
3/8 CNBFZP150 1 1/2" BSF - Castle Nut - BZP
1
£22.13 £26.56
3/8 CNBFZP150
1 1/2" BSF - Castle Nut - BZP
1
£22.13 £26.56
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8 Items