S-98038A293 1.625" ID x 3" OD ASTM F436 Type 1; ASME B18.21.1 Structural Washers

Key Features & Benefits at a Glance

• Superior load distribution with a large 3" outer diameter that minimizes surface pressure and prevents damage to connected materials
• Exceptional durability thanks to Rockwell C38 hardness steel construction that resists deformation under heavy loads
• Precise compatibility with 1 1/2" screw sizes through exact 1.625" inner diameter engineering
• Industry-standard compliance with ASTM F436 Type 1 and ASME B18.21.1 specifications for reliable performance in critical applications
• Enhanced corrosion resistance from high-grade steel material suitable for demanding industrial environments
• Environmental responsibility through full compliance with RoHS 3 and REACH regulations for safe usage
• Optimal thickness range (0.136-0.177") providing consistent performance across varying assembly requirements

Professional Applications & Engineering Value

These ASTM F436 Type 1 steel flat washers deliver critical engineering solutions for heavy-duty industrial applications where reliable load distribution is paramount. The Rockwell C38 hardness ensures the washer maintains structural integrity under extreme pressure, preventing bolt loosening and joint failure in construction, machinery, and structural steel applications. The precise 1.625" ID and 3" OD dimensions create an optimal bearing surface for 1 1/2" screw sizes, effectively distributing clamp load across a wider area to protect softer materials from crushing or deformation. Manufactured from high-quality steel with excellent corrosion resistance, these inch system washers provide long-term reliability in harsh operating conditions while meeting stringent industry standards for performance and safety.

Specification Summary & Compliance

This flat washer features precise dimensional tolerances with 1.625" inner diameter, 3" outer diameter, and 0.136-0.177" thickness range designed specifically for 1 1/2" screw applications. The product meets ASTM F436 Type 1 and ASME B18.21.1 manufacturing specifications, ensuring consistent quality and performance. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations confirms environmental responsibility and safe usage in various industrial settings.