S-94744A248 0.281" ID x 1" OD ASME B18.21.1 ASME Washers

Key Features & Benefits at a Glance

• Superior corrosion protection with zinc plating that extends service life in demanding industrial environments
• Precise dimensional compatibility with 0.281" ID and 1" OD ensuring perfect fit for 1/4" screws
• Enhanced load distribution through controlled thickness (0.056-0.071") preventing surface damage and joint failure
• Reliable mechanical performance with Rockwell B40 hardness maintaining structural integrity under stress
• Industry-standard compliance with ASME B18.21.1 specifications guaranteeing interchangeability and quality
• Environmental regulation adherence through RoHS 3 and REACH compliance for global supply chain acceptance
• Optimized thickness range providing consistent spacing and vibration resistance in assembled components

Professional Applications & Engineering Value

These zinc-plated steel flat washers deliver critical engineering solutions where corrosion resistance and dimensional precision are paramount. The Rockwell B40 hardness ensures the washer maintains its structural integrity when subjected to clamping forces and vibration in industrial fastening applications. The zinc plating creates a protective barrier against oxidation and chemical exposure, significantly extending the service life of assembled components in machinery, structural frameworks, and electrical enclosures. With precise 0.281" ID and 1" OD dimensions specifically engineered for 1/4" screws, these washers prevent loosening, distribute loads evenly across surfaces, and eliminate galvanic corrosion risks in mixed-material assemblies. The controlled 0.056-0.071" thickness provides consistent spacing while accommodating minor surface irregularities in manufacturing applications.

Specification Summary & Compliance

Manufactured to ASME B18.21.1 standards with dimensional specifications including 0.281" inner diameter, 1" outer diameter, and 0.056-0.071" thickness range. The zinc-plated steel construction provides Rockwell B40 hardness for consistent mechanical performance. Compliant with RoHS 3 (2015/863/EU) under exemption 6(a) for lead as an alloying element in steel and fully compliant with REACH (EC 1907/2006) regulations including the latest SVHC updates, ensuring environmental responsibility and global market acceptance.