Nylon Lock Nut

Also known as / standards: Nyloc Nut · Nylon Insert Lock Nut · DIN 985 · DIN 982 · ISO 10511 · NYLOC · ISO 7040 · JIS B 1199-1 · CNS 4314 · CNS 4313 · SUS316 · SS316 · A4 · A4-70

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About Nylon Lock Nut

Nylon insert lock nuts carry a nylon collar that the thread cuts into, gripping by elasticity rather than clamp load. Locking is consistent and independent of preload, which is why they dominate vibrating applications.

Also known as Nyloc Nut · Nylon Insert Lock Nut

Standards ISO 10511 · ISO 7040 · DIN 985 · DIN 982 · JIS B 1199-1 · CNS 4314 · CNS 4313

Zinc-plated steel

The low cost standard.

304 stainless

Wet and outdoor service.

316 stainless

Marine and chemical.

How to choose

• The nylon collar is limited to about 120 C — use all-metal lock nuts above that.
• Replace after a few removals; the collar wears out.
• The bolt must protrude through the collar or there is no locking at all.