S-94744A505 0.406" ID x 1" OD ASME B18.21.1 ASME Washers

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with zinc-plated steel construction, extending service life in harsh industrial environments
• Superior load distribution with precise 1" OD and 0.406" ID dimensions, preventing surface damage and maintaining joint integrity
• High-strength performance meeting Grade 8 standards, ensuring reliable fastening under heavy mechanical stress
• Enhanced durability with Rockwell C38 hardness, resisting deformation and maintaining shape under extreme pressure
• Industry-standard compliance with ASME B18.21.1 specifications, guaranteeing dimensional accuracy and interchangeability
• Environmental responsibility through RoHS 3 and REACH compliance, meeting strict regulatory requirements for hazardous substances
• Perfect fit for 3/8" screws with inch system measurements, ensuring easy installation and secure fastening in mechanical assemblies

Professional Applications & Engineering Value

This Grade 8 zinc-plated steel flat washer delivers critical engineering solutions where vibration resistance, corrosion protection, and structural integrity are paramount. The zinc plating creates a protective barrier against moisture and chemical exposure, significantly reducing rust formation in outdoor equipment, automotive assemblies, and industrial machinery. With its Rockwell C38 hardness and Grade 8 strength classification, this washer maintains dimensional stability under extreme loads, preventing joint loosening in high-vibration applications. The precise 0.406" ID and 1" OD dimensions ensure optimal load distribution across fastened surfaces, protecting components from galling and surface damage. Engineered to ASME B18.21.1 standards, these industrial flat washers provide reliable performance in construction, manufacturing, and heavy equipment applications where fastener failure is not an option.

Specification Summary & Compliance

This flat washer features inch system measurements with 0.406" internal diameter, 1" outer diameter, and 0.056-0.071" thickness range for precise dimensional control. Manufactured to ASME B18.21.1 specifications with Grade 8 strength classification and Rockwell C38 hardness rating. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring safe use across regulated industries. Designed specifically for 3/8" screw applications in mechanical fastening systems requiring high-strength, corrosion-resistant washers.