Serrated Flange Nuts – Metric BZP Zinc Plated Steel, Self-Locking (M5–M12)

Serrated flange nuts in bright zinc plated steel — the built-in flange spreads clamping load like a washer while angled serrations bite in to resist loosening, sized M5 through M12.

Material
Mild steel

Finish
Bright zinc plated (BZP) for corrosion resistance

Thread
Metric coarse pitch

Standard
DIN 6923 serrated hex flange nut

Locking action
Angled serrations under the flange grip the surface and resist loosening under vibration — no separate spring or lock washer needed

Wide flange
Spreads clamping pressure over a larger area, so the nut seats well on slotted, oversized or slightly irregular holes

Sizes
M5, M6, M8, M10 and M12

Uses
Automotive, exhausts, chassis and general assembly where a separate washer and nut would otherwise be used

Quantities available
Choose your size and quantity above — available in packs of 10, 25, 50, 100, 200 or 1000.

Browse our full range of steel nuts, nyloc nuts, set screws and washers to complete the fixing.

Also known as flange nuts, flanged nuts, washer nuts or DIN 6923 nuts.