Use 316 stainless steel washers with type 316 Stainless carriage bolts and hex caps for a trult non-corrosive assembly. Standard flat washers in 316 marine grade stainless steel.
Reviews for 316 S/S Flat Washers
We use these washers with SS Caps Screws (another excellent product from Jamestown Dist.) for assembling proprietary Mini-Fan Coil units for use in Geothermal HVAC applications. Every washer in the pack (over many packs) is perfect. No mistrike or off center rejects.
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