410 Stainless Steel External Tooth Lock Washers

Why use 410 stainless for external tooth washers?

410 is a martensitic stainless that can be hardened, which matters for tooth lock washers because the teeth need spring temper to flatten, bite, and hold without breaking off. With external teeth acting on a larger diameter, that spring hardness gives strong rotational grip while resisting corrosion better than plain or zinc-plated steel. It handles indoor and general outdoor use, though it is less corrosion resistant than 304 or 316. The outward teeth suit larger-head fasteners such as pan and button head screws. Tighten to the correct torque so the teeth seat into the surface.

Why choose 410 stainless external tooth lock washers

• Hardenable: 410 holds spring temper so teeth keep their bite.
• Strong grip: outward teeth act on a larger diameter.
• Corrosion resistant: better than plain or zinc-plated steel.
• Larger-head fit: suits pan and button head fasteners.

Common applications for 410 external tooth lock washers

• Larger-head fastener joints
• High-grip vibration resistance
• Electrical bonding and grounding
• General indoor and outdoor equipment

For marine-grade corrosion resistance, see 316 stainless external tooth lock washers, and browse every material on the main lock washers category.

410 Stainless External Tooth Lock Washers FAQ

Why 410 stainless for tooth washers?

410 can be hardened to hold spring temper, so the teeth flatten and bite without breaking, while offering more corrosion resistance than plain steel.

Is 410 as corrosion resistant as 304 or 316?

No. 410 resists corrosion better than plain steel but less than austenitic 304 or 316. For coastal use, choose 316.

What fasteners suit external tooth washers?

They work best with larger-head fasteners such as pan head and button head screws, where the head covers the outer teeth.