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. 521-951
BrandRS PRO
€25.47
1 Bag of 100
Bag(s)
M8 Nylon Insert - A2 304 - Plain
RS Stock No. 767-826
BrandRS PRO
€17.56
1 Bag of 100
Bag(s)
M5 Nylon Insert - A4 316 - Plain
RS Stock No. 521-939
BrandRS PRO
€13.54
1 Bag of 100
Bag(s)
M5 Nylon Insert - A2 304 - Plain
RS Stock No. 524-304
BrandRS PRO
€5.68
1 Bag of 100
Bag(s)
M4 Nylon Insert Steel - - Bright Zinc Plated
RS Stock No. 767-810
BrandRS PRO
€14.45
1 Bag of 100
Bag(s)
M4 Nylon Insert - A4 316 - Plain
RS Stock No. 524-326
BrandRS PRO
€8.85
1 Bag of 100
Bag(s)
M6 Nylon Insert Steel - - Bright Zinc Plated
RS Stock No. 524-281
BrandRS PRO
€4.98
1 Bag of 100
Bag(s)
M3 Nylon Insert Steel - - Bright Zinc Plated
RS Stock No. 767-804
BrandRS PRO
€14.40
1 Bag of 100
Bag(s)
M3 Nylon Insert - A4 316 - Plain
RS Stock No. 275-692
BrandRS PRO
€39.45
1 Bag of 25
Bag(s)
M16 Nylon Insert - A2 304 - Plain
RS Stock No. 521-923
BrandRS PRO
€11.46
1 Bag of 100
Bag(s)
M4 Nylon Insert - A2 304 - Plain
RS Stock No. 767-832
BrandRS PRO
€21.02
1 Bag of 100
Bag(s)
M6 Nylon Insert - A4 316 - Plain
RS Stock No. 524-310
BrandRS PRO
€6.34
1 Bag of 100
Bag(s)
M5 Nylon Insert Steel - - Bright Zinc Plated
RS Stock No. 521-917
BrandRS PRO
€9.34
1 Bag of 100
Bag(s)
M3 Nylon Insert - A2 304 - Plain
RS Stock No. 275-642
BrandRS PRO
€12.80
1 Bag of 10
Bag(s)
M12 Nylon Insert Steel - - Bright Zinc Plated
RS Stock No. 530-393
BrandRS PRO
€11.21
1 Bag of 100
Bag(s)
M8 Nylon Insert Steel - - Bright Zinc Plated
RS Stock No. 276-780
BrandRS PRO
€21.34
1 Bag of 50
Bag(s)
M16 Nylon Insert Steel - - Bright Zinc Plated
RS Stock No. 530-400
BrandRS PRO
€17.28
1 Bag of 100
Bag(s)
M10 Nylon Insert Steel - - Bright Zinc Plated
RS Stock No. 521-945
BrandRS PRO
€16.00
1 Bag of 100
Bag(s)
M6 Nylon Insert - A2 304 - Plain
RS Stock No. 122-4371
BrandRS PRO
€5.98
1 Bag of 100
Bag(s)
M5 Nylon Insert Steel - - Zinc Plated
RS Stock No. 483-0574
BrandRS PRO
€20.46
1 Bag of 100
Bag(s)
2BA Full Brass - - Nickel Plated
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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. They have a large flat integrated washer which allows for load ...
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 A2 stainless steel with a bright ...
The RS Pro zinc plated locking nuts have ...
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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 ...