1/4 USS Flat Washers - $4 (Ronkonkoma)

856 Johnson Ave

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condition: new

make / manufacturer: Midwest Fastner Corporation

model name / number: NAA2473

delivery available

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Size Specifications: Inner diameter (ID) 0.312" (5/16") to fit 1/4" bolts; outer diameter (OD) 0.734–0.75"; thickness 0.051–0.080" (typically ~0.065–0.079" for even load spread).
Material and Finish: Low-carbon steel (Type A, general purpose); yellow zinc plating for moderate corrosion resistance (suitable for indoor/outdoor use, resists rust in dry-to-humid environments but not marine/heavy exposure).
Standards Compliance: Meets ASME B18.21.1 (Type A narrow/wide series) and USS pattern for compatibility with coarse-thread fasteners; RoHS compliant for environmental safety.

post id: 7897974066

posted: 2025-11-24 08:36

updated: 2026-01-20 08:20

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1/4 USS Flat Washers - tools - by owner - sale - craigslist