S-99872A113 0.317" ID x 0.5" OD Plastic Washers

Key Features & Benefits at a Glance

• Superior chemical resistance from glass-filled nylon construction, ideal for harsh industrial environments
• Excellent dimensional stability with precise 0.317" ID and 0.5" OD for perfect fit on 5/16" screws
• Wide temperature tolerance from -20°F to 230°F maintains performance in extreme conditions
• Exceptional durability with Rockwell M96 hardness rating for long service life
• Regulatory compliance assurance with RoHS 3 and REACH standards for safe industrial use
• Reliable electrical insulation properties inherent to nylon plastic construction
• Corrosion-free performance eliminating galvanic corrosion concerns in metal assemblies

Professional Applications & Engineering Value

This glass-filled nylon flat washer delivers critical engineering solutions where metal washers fail. The glass-reinforced nylon plastic construction provides exceptional chemical resistance against oils, solvents, and industrial fluids while eliminating galvanic corrosion in electrical and marine applications. With a temperature range from -20°F to 230°F, these washers maintain dimensional stability in automotive, HVAC, and outdoor equipment where thermal cycling occurs. The precise 0.317" ID ensures secure fit on 5/16" screws while the 0.5" OD distributes load effectively, preventing surface damage in assemblies. Ideal for electrical enclosures, food processing equipment, and chemical handling systems where non-conductive, non-corrosive fastening solutions are essential.

Specification Summary & Compliance

Manufactured to inch system standards with precise dimensions: 0.317" inner diameter, 0.5" outer diameter, and 0.057-0.067" thickness specifically engineered for 5/16" screw applications. Features Rockwell M96 hardness for consistent performance under load. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and industrial suitability. The glass-filled nylon material maintains structural integrity across the specified temperature range while meeting industry standards for plastic fastener applications.