Hex washer head self drilling w/bonded sealing washer
A hexagonal head for use with a wrench, with a metal-backed neoprene sealing washer and a drill bit point.
- Stainless steel 410
A stainless alloy that is harder than 18-8 stainless steel, but not as resistant to corrosion.
- Zinc plated steel
Heat treated for adequate strength. Zinc plated for moderate corrosion resistance.
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