S-90377A171 0.406" ID x 1.25" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from 18-8 stainless steel with black-oxide finish, ideal for harsh industrial environments
• Precise dimensional fit with 0.406" ID and 1.25" OD ensuring reliable performance under 3/8" fasteners
• Optimized load distribution with 0.040-0.060" thickness range for enhanced joint integrity
• Environmental compliance assurance meeting RoHS 3 and REACH standards for regulated applications
• Durable stainless steel construction providing long-term reliability in demanding conditions
• Wide industrial compatibility with inch measurement system for seamless integration

Professional Applications & Engineering Value

These black-oxide 18-8 stainless steel flat washers deliver exceptional engineering value in applications where corrosion resistance and dimensional precision are critical. The 0.406" ID x 1.25" OD configuration provides optimal surface coverage for 3/8" screw sizes, effectively distributing clamp load and preventing surface damage in assemblies. The black-oxide finish enhances corrosion protection while maintaining the inherent strength of 18-8 stainless steel, making these industrial washers ideal for outdoor equipment, marine applications, food processing machinery, and chemical processing plants where moisture and corrosive elements are present. The controlled 0.040-0.060" thickness ensures consistent performance across batch production while maintaining proper fastener tension.

Specification Summary & Compliance

Manufactured to precise dimensional standards with inner diameter of 0.406", outer diameter of 1.25", and thickness range of 0.040-0.060". These flat washers are compatible with 3/8" screw sizes and feature black-oxide 18-8 stainless steel construction. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations ensures suitability for applications requiring strict material restrictions and environmental responsibility.