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
£3.48
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
£9.21
1 Bag of 100
Bag(s)
M3 Nylon Insert - A4 316 - Plain
RS Stock No. 767-832
BrandRS PRO
£13.56
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
£7.40
1 Bag of 100
Bag(s)
M4 Nylon Insert - A2 304 - Plain
RS Stock No. 767-810
BrandRS PRO
£10.26
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
£12.47
1 Bag of 100
Bag(s)
M5 Nylon Insert - A4 316 - Plain
RS Stock No. 767-848
BrandRS PRO
£23.69
1 Bag of 100
Bag(s)
M8 Nylon Insert - A4 316 - Plain
RS Stock No. 521-951
BrandRS PRO
£16.87
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
£11.37
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
£8.65
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
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From the trusted RS PRO brand, these lock ...
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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 ...
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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. Grade 4 steel, bright zinc plated All-metal construction Allows use up to 300°CStay in position whether tightened or not Reuseable.
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 ...