Special Offers
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6.3 X 25 Hex Head Self Drilling Screw DIN 7504-K A2 Stainless Steel
In stockRRP From £11.21 -
M8 Flat Washer, Form A DIN 125-A A2 Stainless Steel
In stockRRP From £2.69 -
M8 Nylon Insert Nut DIN 985 A2 Stainless Steel
In stockRRP From £3.23 -
M10 Hexagon Full Nut DIN 934 A2 Stainless Steel
In stockRRP From £3.99
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8-32 UNC Nylon Insert Nut A4 Stainless Steel
In stockThis 8 nylon insert lock nut is manufactured in A4 stainless steel (316 grade). The nylon collar is undersized and deforms around the thread as the nut is run on, gripping it and resisting loosening under...RRP From £25.97RRP From £25.97 -
8-32 UNC Nylon Insert Nut A2 Stainless Steel
In stockThis 8 nylon insert lock nut is manufactured in A2 stainless steel (304 grade). The nylon collar is undersized and deforms around the thread as the nut is run on, gripping it and resisting loosening under...RRP From £11.03RRP From £11.03 -
7/8" UNC Nylon Insert Nut A4 Stainless Steel
In stockThis 7/8" UNC nylon insert lock nut is manufactured in A4 stainless steel (316 grade). The nylon collar is undersized and deforms around the thread as the nut is run on, gripping it and resisting loosening...RRP From £30.02RRP From £30.02 -
7/8" UNC Nylon Insert Nut A2 Stainless Steel
In stockThis 7/8" UNC nylon insert lock nut is manufactured in A2 stainless steel (304 grade). The nylon collar is undersized and deforms around the thread as the nut is run on, gripping it and resisting loosening...RRP From £22.09RRP From £22.09 -
7/16" UNF Nylon Insert Nut A2 Stainless Steel
In stockThis 7/16" UNF nylon insert lock nut is manufactured in A2 stainless steel (304 grade). The nylon collar is undersized and deforms around the thread as the nut is run on, gripping it and resisting loosening...RRP From £17.81RRP From £17.81 -
7/16" UNC Nylon Insert Nut A4 Stainless Steel
Out of stockThis 7/16" UNC nylon insert lock nut is manufactured in A4 stainless steel (316 grade). The nylon collar is undersized and deforms around the thread as the nut is run on, gripping it and resisting loosening...RRP From £23.80RRP From £23.80 -
7/16" UNC Nylon Insert Nut A2 Stainless Steel
In stockThis 7/16" UNC nylon insert lock nut is manufactured in A2 stainless steel (304 grade). The nylon collar is undersized and deforms around the thread as the nut is run on, gripping it and resisting loosening...RRP From £20.45RRP From £20.45 -
6-32 UNC Nylon Insert Nut DIN 985 A2 Stainless Steel
In stockThis 6 nylon insert lock nut is manufactured to DIN 985 in A2 stainless steel (304 grade). DIN 985 specifies a hexagon nut with a nylon collar set into the top face, for joints subject to...RRP From £7.26RRP From £7.26 -
5/8" UNF Nylon Insert Nut A2 Stainless Steel
In stockThis 5/8" UNF nylon insert lock nut is manufactured in A2 stainless steel (304 grade). The nylon collar is undersized and deforms around the thread as the nut is run on, gripping it and resisting loosening...RRP From £24.03RRP From £24.03 -
6-32 UNC Nylon Insert Nut A4 Stainless Steel
In stockThis 6 nylon insert lock nut is manufactured in A4 stainless steel (316 grade). The nylon collar is undersized and deforms around the thread as the nut is run on, gripping it and resisting loosening under...RRP From £18.65RRP From £18.65 -
5/8" UNF Hex Nylon Insert Lock Nut A4 Stainless Steel
In stockThis 5/8" UNF hex Nylon Insert Lock Nut is manufactured in A4 stainless steel (316 grade).Typical applications Boat fittings, rigging, and deck hardware Dock, pontoon, and coastal installations Exposed structures in salt-laden or chloride-rich air Any...RRP From £24.24RRP From £24.24 -
5/8" UNC Nylon Insert Nut A2 Stainless Steel
In stockThis 5/8" UNC nylon insert lock nut is manufactured in A2 stainless steel (304 grade). The nylon collar is undersized and deforms around the thread as the nut is run on, gripping it and resisting loosening...RRP From £25.97RRP From £25.97 -
5/8" UNC Nylon Insert Nut A4 Stainless Steel
In stockThis 5/8" UNC nylon insert lock nut is manufactured in A4 stainless steel (316 grade). The nylon collar is undersized and deforms around the thread as the nut is run on, gripping it and resisting loosening...RRP From £32.99RRP From £32.99 -
5/16" UNF Nylon Insert Nut ASME B18.6.6 A4 Stainless Steel
In stockThis 5/16" UNF nylon insert lock nut is manufactured to ASME B18.6.6 in A4 stainless steel (316 grade). ASME B18.6.6 specifies a hexagon nut with a nylon collar set into the top face, for joints subject...RRP From £27.14RRP From £27.14 -
5/16" UNF Nylon Insert Nut A2 Stainless Steel
In stockThis 5/16" UNF nylon insert lock nut is manufactured in A2 stainless steel (304 grade). The nylon collar is undersized and deforms around the thread as the nut is run on, gripping it and resisting loosening...RRP From £6.77RRP From £6.77 -
5/16" UNC Nylon Insert Nut DIN 985 A4 Stainless Steel
In stockThis 5/16" UNC nylon insert lock nut is manufactured to DIN 985 in A4 stainless steel (316 grade). DIN 985 specifies a hexagon nut with a nylon collar set into the top face, for joints subject...RRP From £9.43RRP From £9.43 -
5/16" UNC Nylon Insert Nut A2 Stainless Steel
In stockThis 5/16" UNC nylon insert lock nut is manufactured in A2 stainless steel (304 grade). The nylon collar is undersized and deforms around the thread as the nut is run on, gripping it and resisting loosening...RRP From £14.41RRP From £14.41 -
4-40 UNC Nylon Insert Nut DIN 985 A2 Stainless Steel
In stockThis 4 nylon insert lock nut is manufactured to DIN 985 in A2 stainless steel (304 grade). DIN 985 specifies a hexagon nut with a nylon collar set into the top face, for joints subject to...RRP From £8.41RRP From £8.41 -
4-40 UNC Nylon Insert Nut A4 Stainless Steel
In stockThis 4 nylon insert lock nut is manufactured in A4 stainless steel (316 grade). The nylon collar is undersized and deforms around the thread as the nut is run on, gripping it and resisting loosening under...RRP From £20.60RRP From £20.60 -
3/8" UNF Nylon Insert Nut A4 Stainless Steel
In stockThis 3/8" UNF nylon insert lock nut is manufactured in A4 stainless steel (316 grade). The nylon collar is undersized and deforms around the thread as the nut is run on, gripping it and resisting loosening...RRP From £16.57RRP From £16.57 -
3/8" UNF Nylon Insert Nut A2 Stainless Steel
In stockThis 3/8" UNF nylon insert lock nut is manufactured in A2 stainless steel (304 grade). The nylon collar is undersized and deforms around the thread as the nut is run on, gripping it and resisting loosening...RRP From £10.14RRP From £10.14 -
3/8" UNC Nylon Insert Nut A2 Stainless Steel
In stockThis 3/8" UNC nylon insert lock nut is manufactured in A2 stainless steel (304 grade). The nylon collar is undersized and deforms around the thread as the nut is run on, gripping it and resisting loosening...RRP From £16.39RRP From £16.39 -
3/8" UNC Nylon Insert Lock Nut DIN 985 A4 Stainless Steel
In stockThis 3/8" UNC nylon insert lock nut is manufactured to DIN 985 in A4 stainless steel (316 grade). DIN 985 specifies a hexagon nut with a nylon collar set into the top face, for joints subject...RRP From £9.19RRP From £9.19 -
3/8" BSW Nylon Insert Nut A2 Stainless Steel
Out of stockThis 3/8" BSW nylon insert lock nut is manufactured in A2 stainless steel (304 grade). The nylon collar is undersized and deforms around the thread as the nut is run on, gripping it and resisting loosening...RRP From £4.02RRP From £4.02 -
3/4" UNF Nylon Insert Nut A2 Stainless Steel
In stockThis 3/4" UNF nylon insert lock nut is manufactured in A2 stainless steel (304 grade). The nylon collar is undersized and deforms around the thread as the nut is run on, gripping it and resisting loosening...RRP From £26.59RRP From £26.59
Nylon insert lock nuts (nyloc nuts) in A2 (304) and A4 (316) stainless steel, from M2 to M36, plus imperial UNC and UNF sizes. A nylon ring in the top of the nut grips the bolt thread and resists loosening from vibration and repeated loading.
- Standard nyloc nuts to DIN 985, and the taller DIN 982, in A2 and A4.
- Flange nyloc nuts (DIN 6926), serrated or non-serrated, with a built-in washer face, from M3 to M12.
- Domed nyloc nuts (DIN 986) in A2, M4 to M16, which cover the thread end and lock in one.
The nylon wears each time the nut is removed, so fit a new one when you reassemble a critical joint, and keep nyloc nuts away from hot parts such as exhausts. Choose A2 for indoor and general outdoor use, and A4 for marine, coastal and salt-exposed work.
Sizes, grades and pack quantities vary by product type. Check the individual product listing for the exact specification and current availability.