Locking Nuts

A lock nut is a type of nut that resists loosening when properly threaded onto a bolt. Nut-and-bolt fasteners are extremely common in industry and home applications. Lock nuts fall into one of 2 groups
● Prevailing Torque Lock Nuts - Prevailing torque is the amount of torque needed to run a nut down a thread on nuts that are designed to resist self-loosening under vibratory forces.
● Surface bearing lock nuts – surface bearing - a free spinning nut that requires tightening against a bearing surface in order for the locking mechanism to function.

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Description Price Thread Size Type Material Stainless Steel Type Width Finish
RS Stock No. 524-281
BrandRS PRO
£3.55
1 Bag of 100
Bag(s)
M3 Nylon Insert Steel - - Bright Zinc Plated
RS Stock No. 524-304
BrandRS PRO
£3.74
1 Bag of 100
Bag(s)
M4 Nylon Insert Steel - - Bright Zinc Plated
RS Stock No. 767-804
BrandRS PRO
£9.39
1 Bag of 100
Bag(s)
M3 Nylon Insert - A4 316 - Plain
RS Stock No. 767-832
BrandRS PRO
£13.83
1 Bag of 100
Bag(s)
M6 Nylon Insert - A4 316 - Plain
RS Stock No. 524-310
BrandRS PRO
£4.55
1 Bag of 100
Bag(s)
M5 Nylon Insert Steel - - Bright Zinc Plated
RS Stock No. 521-923
BrandRS PRO
£7.55
1 Bag of 100
Bag(s)
M4 Nylon Insert - A2 304 - Plain
RS Stock No. 767-810
BrandRS PRO
£10.47
1 Bag of 100
Bag(s)
M4 Nylon Insert - A4 316 - Plain
RS Stock No. 521-917
BrandRS PRO
£6.50
1 Bag of 100
Bag(s)
M3 Nylon Insert - A2 304 - Plain
RS Stock No. 767-826
BrandRS PRO
£12.72
1 Bag of 100
Bag(s)
M5 Nylon Insert - A4 316 - Plain
RS Stock No. 767-848
BrandRS PRO
£24.16
1 Bag of 100
Bag(s)
M8 Nylon Insert - A4 316 - Plain
RS Stock No. 521-951
BrandRS PRO
£17.21
1 Bag of 100
Bag(s)
M8 Nylon Insert - A2 304 - Plain
RS Stock No. 524-326
BrandRS PRO
£6.34
1 Bag of 100
Bag(s)
M6 Nylon Insert Steel - - Bright Zinc Plated
RS Stock No. 530-393
BrandRS PRO
£8.04
1 Bag of 100
Bag(s)
M8 Nylon Insert Steel - - Bright Zinc Plated
RS Stock No. 521-945
BrandRS PRO
£11.60
1 Bag of 100
Bag(s)
M6 Nylon Insert - A2 304 - Plain
RS Stock No. 767-854
BrandRS PRO
£28.26
1 Bag of 100
Bag(s)
M10 Nylon Insert - A4 316 - Plain
RS Stock No. 530-416
BrandRS PRO
£15.98
1 Bag of 100
Bag(s)
M12 Nylon Insert Steel - - Bright Zinc Plated
RS Stock No. 521-939
BrandRS PRO
£8.82
1 Bag of 100
Bag(s)
M5 Nylon Insert - A2 304 - Plain
RS Stock No. 665-5615
BrandRS PRO
£27.61
1 Bag of 10
Bag(s)
M8 Aerotight - A4 316 13mm Plain
RS Stock No. 530-400
BrandRS PRO
£12.40
1 Bag of 100
Bag(s)
M10 Nylon Insert Steel - - Bright Zinc Plated
RS Stock No. 248-4539
BrandRS PRO
£28.55
1 Bag of 50
Bag(s)
M12 Nylon Insert - A4 316 - Plain
Related Products
From the trusted RS PRO brand, these lock ...
Description:
From the trusted RS PRO brand, these lock nuts contain a nylon insert for safe and secure fastening. They are designed to remain secure despite conditions of severe vibration. The nut is made from grade 8 steel with a bright zinc plating, for durability and environmental resistance over a long ...
The RS Pro zinc plated locking nuts have ...
Description:
The RS Pro zinc plated locking nuts have a nylon insert. The nuts have been designed to remain secure despite severe vibration. Having a nylon insert makes the nut better at sealing the bolt thread against leaking water, oil and other liquids.When you insert the mating bolt into the nylon ...
Introducing RS PRO lock nuts, a range of ...
Description:
Introducing RS PRO lock nuts, a range of high quality and robust nuts ideal for securing components such as bearings on to cylindrical shafts and to assist with mounting and dismounting of bearing adapter sleeves. RS PRO nut locks are the perfect solution for securing bearing installations and help to ...
Self-locking all metal nuts, designed to stay in ...
Description:
Self-locking all metal nuts, designed to stay in position despite conditions of severe vibration. This is achieved by cantilevered threaded arms which are deflected downwards and inwards. A1 grade type 303 stainless steel All-metal construction Allows use up to 300°CStay in position whether tightened or not Reuseable. A1 Stainless Steel ...