S-92217A312 1.313" ID x 3" OD ASME B18.21.1 ASME Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to 18-8 stainless steel construction, ideal for harsh industrial environments
• Exceptional load distribution with a large 3" outer diameter, minimizing surface pressure and material stress
• Precise fit for 1 1/4" screws ensured by the 1.313" inner diameter, reducing installation errors and vibration loosening
• Enhanced durability from the substantial 0.146-0.174" thickness, providing reliable long-term performance under heavy loads
• Guaranteed dimensional consistency through compliance with ASME B18.21.1 standards, ensuring interchangeability
• Environmental and safety compliance with RoHS 3 and REACH regulations, safe for restricted substance-sensitive applications
• Broad industrial compatibility in inch measurement systems, simplifying procurement for North American machinery and equipment

Professional Applications & Engineering Value

Engineered for demanding industrial use, these 18-8 stainless steel flat washers solve critical challenges in assembly and maintenance. The corrosion-resistant material prevents rust and degradation in moist or chemical-exposed settings, such as marine equipment, food processing plants, and outdoor structures. The large 3" OD and robust thickness effectively distribute clamping force, protecting soft surfaces and preventing bolt head embedment. This is vital for heavy-duty applications involving large 1 1/4" screws in construction, transportation, and heavy machinery, where vibration resistance and joint integrity are paramount. Compliance with ASME B18.21.1 ensures that these washers meet recognized dimensional and quality benchmarks, reducing the risk of assembly failures and maintenance downtime.

Specification Summary & Compliance

This flat washer features an inner diameter of 1.313", outer diameter of 3", and thickness ranging from 0.146" to 0.174", designed specifically for use with 1 1/4" screws in inch-based systems. It is manufactured in accordance with ASME B18.21.1 specifications, ensuring precise dimensional tolerances and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to environmental and safety standards for hazardous substances.