S-98019A226 0.21" ID x 0.365" OD MS51496-P73 Mil. Spec. Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with passivated 18-8 stainless steel construction for extended service life in harsh environments
• Precise dimensional accuracy ensures perfect fit and uniform load distribution for No. 10 screws
• Enhanced surface durability with Rockwell C20 hardness to withstand repeated assembly and disassembly
• Reliable performance compliance meeting stringent MS51496-P73 military specifications for critical applications
• Environmental regulation adherence with full RoHS 3 and REACH compliance for global supply chain integration
• Consistent thickness tolerance (0.029-0.032") provides predictable compression and sealing performance
• Optimized sizing (0.21" ID / 0.365" OD) prevents loosening and maintains joint integrity under vibration

Professional Applications & Engineering Value

These No. 10 flat washers deliver exceptional engineering value through their passivated 18-8 stainless steel composition, specifically engineered to solve common industrial challenges. The passivation surface treatment creates a protective oxide layer that significantly enhances corrosion resistance in demanding environments where moisture, chemicals, or temperature variations are concerns. The precise inch system dimensions (0.21" ID, 0.365" OD) ensure perfect compatibility with No. 10 fasteners, eliminating play and maintaining joint integrity in vibration-prone applications. With consistent thickness control and Rockwell C20 hardness, these flat washers provide reliable load distribution while resisting deformation under torque, making them ideal for industrial machinery, electrical enclosures, and marine equipment where fastener reliability is critical to operational safety and maintenance intervals.

Specification Summary & Compliance

Manufactured to exact MS51496-P73 specifications with precise dimensional tolerances including 0.21" inner diameter, 0.365" outer diameter, and thickness range of 0.029-0.032". These inch system washers feature 18-8 stainless steel material with Rockwell C20 hardness and passivated surface treatment. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, including the latest SVHC updates as of June 14, 2023, ensuring environmental responsibility and global market acceptance.