- BUILT-IN WASHER ON UNDERSIDE: Protects material while eliminating the need for an additional flat washer
- PART OF A COMPLETE FASTENING SOLUTION: Use with bolts or threaded rods of the same thread size and finish
- MADE USING GRADE 8 STEEL: Appropriate for marine and heavy machinery applications (match with Grade 8 washers and nuts)
- VIBRATION-RESISTANT: Nylon insert helps retain integrity of the fastener when vibrating force is applied
- Parts made of high-strength steel
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