316 Stainless Steel Internal Tooth Lock Washers

Why choose 316 stainless for internal tooth washers?

316 stainless adds molybdenum for far better resistance to salt and chloride pitting than 304 or 410, so a 316 internal tooth washer keeps its grip and corrosion resistance in coastal, marine, and wash-down settings. The inward-facing teeth bite the surface and the underside of the bolt head to resist loosening, while the smooth outer edge keeps a clean look for smaller-head fasteners and tight spaces. Being austenitic, 316 is softer than hardened 410, so the teeth grip well on softer mating materials. Pair it with 316 stainless hardware, and tighten to the correct torque so the teeth seat.

Why choose 316 stainless internal tooth lock washers

• Marine-grade corrosion resistance: molybdenum-alloyed for salt and chlorides.
• Vibration locking: teeth bite the surface to resist loosening.
• Clean look: inward teeth hidden under the bolt head.
• Grounding: teeth bite through coatings for metal-to-metal contact.

Common applications for 316 internal tooth lock washers

• Marine and coastal grounding and hardware
• Wash-down and food-grade equipment
• Boats, docks, and saltwater exposure
• Electronics in corrosive environments

For a hardened, springy option, see 410 stainless internal tooth lock washers, and browse every material on the main lock washers category.

316 Stainless Internal Tooth Lock Washers FAQ

Why choose 316 over 410 or 304?

316 adds molybdenum for much better resistance to salt and chloride pitting, making it the choice for coastal, marine, and wash-down use.

Is 316 as hard as 410 for tooth washers?

No. 316 is austenitic and softer than hardened 410, so the teeth grip well on softer mating surfaces while giving top corrosion resistance.

Why are internal tooth washers used for grounding?

The teeth bite through coatings and oxide to make solid metal-to-metal contact, which is why they are common at electrical ground points.