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. 767-804
BrandRS PRO
$19.72
1 Bag of 100
Bag(s)
M3 Nylon Insert - A4 316 - Plain
RS Stock No. 767-832
BrandRS PRO
$29.05
1 Bag of 100
Bag(s)
M6 Nylon Insert - A4 316 - Plain
RS Stock No. 524-304
BrandRS PRO
$8.00
1 Bag of 100
Bag(s)
M4 Nylon Insert Steel - - Bright Zinc Plated
RS Stock No. 524-281
BrandRS PRO
$7.46
1 Bag of 100
Bag(s)
M3 Nylon Insert Steel - - Bright Zinc Plated
RS Stock No. 524-326
BrandRS PRO
$13.45
1 Bag of 100
Bag(s)
M6 Nylon Insert Steel - - Bright Zinc Plated
RS Stock No. 521-917
BrandRS PRO
$13.93
1 Bag of 100
Bag(s)
M3 Nylon Insert - A2 304 - Plain
RS Stock No. 767-810
BrandRS PRO
$21.97
1 Bag of 100
Bag(s)
M4 Nylon Insert - A4 316 - Plain
RS Stock No. 767-826
BrandRS PRO
$26.70
1 Bag of 100
Bag(s)
M5 Nylon Insert - A4 316 - Plain
RS Stock No. 521-923
BrandRS PRO
$15.85
1 Bag of 100
Bag(s)
M4 Nylon Insert - A2 304 - Plain
RS Stock No. 521-939
BrandRS PRO
$18.52
1 Bag of 100
Bag(s)
M5 Nylon Insert - A2 304 - Plain
RS Stock No. 767-848
BrandRS PRO
$50.74
1 Bag of 100
Bag(s)
M8 Nylon Insert - A4 316 - Plain
RS Stock No. 767-854
BrandRS PRO
$60.52
1 Bag of 100
Bag(s)
M10 Nylon Insert - A4 316 - Plain
RS Stock No. 122-4372
BrandRS PRO
$11.85
1 Bag of 100
Bag(s)
M6 Nylon Insert Steel - - Zinc Plated
RS Stock No. 521-945
BrandRS PRO
$24.35
1 Bag of 100
Bag(s)
M6 Nylon Insert - A2 304 - Plain
RS Stock No. 483-0596
BrandRS PRO
$12.09
1 Bag of 250
Bag(s)
6BA Full Brass - - Nickel Plated
RS Stock No. 524-310
BrandRS PRO
$9.64
1 Bag of 100
Bag(s)
M5 Nylon Insert Steel - - Bright Zinc Plated
RS Stock No. 122-4371
BrandRS PRO
$8.80
1 Bag of 100
Bag(s)
M5 Nylon Insert Steel - - Zinc Plated
RS Stock No. 275-614
BrandRS PRO
$41.95
1 Bag of 100
Bag(s)
M6 Nylon Insert Steel - - Bright Zinc Plated
RS Stock No. 248-4539
BrandRS PRO
$61.15
1 Bag of 50
Bag(s)
M12 Nylon Insert - A4 316 - Plain
RS Stock No. 665-5628
BrandRS PRO
$122.52
1 Bag of 10
Bag(s)
M12 Aerotight - A4 316 19mm Plain
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BZP Steel - Metric Thread Nylon Insert Self-locking 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 ...
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A2 Stainless Steel - Metric Self-locking nuts with glass-filled nylon inserts These are designed to remain secure despite conditions of severe vibration. Features and Benefits To DIN985A2 grade 18//8 stainless steel (Type 304 S15) Applications Unlike conventional fasteners, lock nuts, ...
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