316 Stainless Steel External Tooth Lock Washers
What are 316 stainless external tooth lock washers? 316 stainless steel external tooth lock washers are star washers with outward-facing teeth, made from marine-grade 316 stainless. The teeth act on a larger diameter for strong grip while the molybdenum-alloyed grade resists salt and chloride corrosion for coastal and marine use.
Size:
Why choose 316 stainless for external tooth washers?
316 stainless adds molybdenum for far better resistance to salt and chloride pitting than 304 or 410, so a 316 external tooth washer keeps its grip and corrosion resistance in coastal, marine, and wash-down settings. The outward-facing teeth act on a larger diameter to bite the surface and the bolt head, giving strong resistance to loosening, and they suit larger-head fasteners. Being austenitic, 316 is softer than hardened 410, so the teeth grip well on softer mating materials while giving top corrosion resistance. Pair it with 316 stainless hardware, and tighten to the correct torque so the teeth seat.
Why choose 316 stainless external tooth lock washers
- Marine-grade corrosion resistance: molybdenum-alloyed for salt and chlorides.
- Strong grip: outward teeth act on a larger diameter.
- Vibration locking: teeth bite the surface to resist loosening.
- Larger-head fit: suits pan and button head fasteners.
Common applications for 316 external tooth lock washers
- Marine and coastal grounding and hardware
- Wash-down and food-grade equipment
- Boats, docks, and saltwater exposure
- Larger-head fasteners in corrosive settings
For a hardened, springy option, see 410 stainless external tooth lock washers, and browse every material on the main lock washers category.
316 Stainless External 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.
Do external tooth washers grip more than internal?
Yes. Because the teeth act on a larger diameter, external tooth washers usually give stronger rotational resistance than internal tooth washers of the same size.