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South Coast Fasteners stocks the #4 Lock Washers (External Tooth), Phosphorus Bronze for fast 3-5 day shipping. It is made from Phosphorus Bronze. Used in spreading the clamp load and protecting the work surface, it is part of our Silicon Bronze Washers line, stocked across industries such as Manufacturing, Automotive, and HVAC.
Pairs well with Hex Bolts and Finished Hex Nuts to complete the assembly. Please contact us if you need assistance in selecting the right product or placing an order.