Nyloc Nuts (UNF) – Nylon Insert Self-Locking, BZP Zinc Plated Steel (1/4"–3/4")

UNF imperial nyloc nuts (nylon insert self-locking nuts) in bright zinc plated steel — the nylon collar grips the bolt thread to resist loosening under vibration, sized 1/4" through 3/4".

Material
Mild steel

Finish
Bright zinc plated (BZP) for corrosion resistance

Thread
UNF (Unified Fine) — imperial fine thread

Type
P-Type nylon insert

Sizes
1/4", 5/16", 3/8", 7/16", 1/2", 5/8" and 3/4"

Locking action
The nylon collar grips the bolt thread and holds tight under vibration; it also helps seal the thread against moisture and corrosion

Uses
Classic vehicles, automotive, machinery and general assembly on imperial fine-thread fasteners wherever vibration could shake a standard nut loose

Quantities available
Choose your size and quantity above — available in packs of 10, 25, 50, 100 or 1000.

Working in metric? See our metric nyloc nuts. Browse our full range of steel nuts, set screws and washers to complete the fixing.

Also known as nylon insert nuts, nylon lock nuts, self-locking nuts, lock nuts or nyloc nuts.