S-94744A518 0.281" ID x 1" OD ASME B18.21.1 ASME Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in demanding environments
• Reliable load distribution with precise 1" OD and 0.281" ID dimensions, preventing surface damage and fastener loosening
• High-strength performance meeting Grade 5 standards, ensuring dependable performance under mechanical stress
• Consistent thickness control (0.056-0.071") for uniform pressure distribution and secure fastening
• Industry-standard compliance with ASME B18.21.1 specifications, guaranteeing dimensional accuracy and interchangeability
• Environmental responsibility with RoHS 3 and REACH compliance, safe for regulated industrial applications
• Optimized for 1/4" fasteners providing perfect fit and enhanced vibration resistance in assembly operations

Professional Applications & Engineering Value

These zinc-plated steel flat washers deliver critical engineering solutions where corrosion resistance and load distribution are paramount. The Grade 5 strength rating ensures they maintain integrity under sustained mechanical loads, while the zinc plating provides essential protection against rust in humid or outdoor industrial environments. Perfect for heavy-duty applications in machinery assembly, structural frameworks, and automotive components, these ASME B18.21.1 compliant washers prevent bolt head embedding, reduce friction during tightening, and maintain clamp force integrity. Their precise 1/4" screw compatibility and standardized dimensions make them ideal for maintenance operations and production lines requiring reliable, interchangeable fastener components.

Specification Summary & Compliance

Manufactured to ASME B18.21.1 dimensional standards with inner diameter 0.281", outer diameter 1", and thickness range 0.056-0.071". Constructed from zinc-plated steel with Grade 5 strength classification. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, containing no restricted substances above threshold limits. Designed specifically for use with 1/4" fasteners in industrial and mechanical applications.