S-92908A150 0.203" ID x 1.25" OD Finishing Washers
Finishing Washers
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Basic Information
Dimension Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
Geometric Parameters
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Key Features & Benefits at a Glance
- Superior corrosion resistance from black-oxide steel finish, extending service life in harsh industrial environments
- Precise 82° countersink angle ensures flush mounting with standard fasteners for streamlined assemblies
- Exceptional hardness rating (Rockwell 15N80) maintains dimensional stability under heavy loads
- Optimized dimensional tolerances (0.203" ID x 1.25" OD) provide consistent mating with No. 10 screws
- Full regulatory compliance with RoHS 3 and REACH standards for global supply chain integration
- Enhanced load distribution through controlled thickness (0.130-0.151") prevents surface damage
- Reliable performance in demanding applications due to inch-system precision manufacturing
Professional Applications & Engineering Value
These 82° countersunk washers deliver critical engineering solutions where surface flushness and corrosion resistance are paramount. The black-oxide steel construction creates a protective barrier against oxidation, making these industrial washers ideal for outdoor equipment, automotive assemblies, and machinery exposed to moisture. The precise 82° countersink angle perfectly matches standard fastener profiles, eliminating protrusions in aerodynamic surfaces and safety-critical applications. With Rockwell 15N80 hardness, these precision washers maintain their form under vibration and thermal cycling, while the optimized inner diameter ensures secure seating on No. 10 screws without compromising thread engagement.
Specification Summary & Compliance
Manufactured to inch system standards with dimensional specifications: 0.203" ID, 1.25" OD, and 0.130-0.151" thickness range. The 82° countersunk washers feature Rockwell 15N80 hardness testing and comply with RoHS 3 (2015/863/EU) under exemption 6(a) for lead alloying elements in steel. Full REACH (EC 1907/2006) compliance verified against 233 SVHC substances as of 01/17/2023, ensuring environmental responsibility in industrial fastener applications.
