410 Stainless Steel Internal Tooth Lock Washers

Why use 410 stainless for tooth lock 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. That makes 410 a common choice for internal tooth washers that must grip reliably 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 inward-facing teeth suit smaller-head fasteners, tight spaces, and electrical grounding. Tighten to the correct torque so the teeth seat into the surface.

Why choose 410 stainless internal tooth lock washers

• Hardenable: 410 holds spring temper so teeth keep their bite.
• Corrosion resistant: better than plain or zinc-plated steel.
• Clean look: inward teeth hidden under the bolt head.
• Grounding: teeth bite through coatings for metal-to-metal contact.

Common applications for 410 internal tooth lock washers

• Electrical grounding and bonding
• Smaller-head fasteners and tight spaces
• Electronics and control panels
• General indoor and outdoor equipment

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

410 Stainless Internal 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 internal tooth washers?

They work best with smaller-head fasteners such as fillister head screws, where the head covers the inner teeth.