S-92856A110 0.172" ID x 1" OD Dished Washers

Key Features & Benefits at a Glance

• Superior oversized hole compensation - The unique cup design effectively bridges gaps in oversized holes, preventing fastener loosening and ensuring secure, long-lasting connections.
• Enhanced corrosion resistance - The zinc-plated steel construction provides a durable barrier against rust and corrosion, extending the washer's service life in harsh industrial settings.
li>Exceptional mechanical strength - With a Rockwell B75 hardness, this washer maintains its shape and function under high clamp loads and vibration, resisting deformation.
• Precise fit for No. 8 screws - The exact 0.172" ID ensures a perfect match with No. 8 fasteners, promoting even load distribution and preventing thread damage.
• Optimized load-bearing surface - The generous 1" OD and cup profile create a wide, stable bearing surface, reducing point pressure and protecting sensitive materials from damage.
• Guaranteed environmental compliance - Being RoHS 3 compliant ensures the washer meets strict international standards for hazardous substance restrictions, making it suitable for global supply chains.
• Dimensional consistency - Tight thickness tolerances (0.030-0.065") and precise overall height (0.187") guarantee reliable performance and ease of installation in automated or manual assembly processes.

Professional Applications & Engineering Value

This heavy-duty cup washer is engineered to solve the common industrial challenge of oversized holes, which can lead to joint failure, vibration-induced loosening, and reduced structural integrity. The zinc-plated steel material offers excellent corrosion protection for outdoor equipment, automotive assemblies, and construction frameworks exposed to the elements. Its cup form acts as a spring and seal, compensating for hole tolerances and providing a consistent clamping force that is critical for No. 8 screws in high-vibration environments like machinery, electrical enclosures, and metal fabrications. By ensuring a larger bearing area, it distributes load effectively, preventing surface crushing and maintaining the integrity of the assembled components, thereby reducing maintenance needs and enhancing overall fastener performance.

Specification Summary & Compliance

This cup washer conforms to inch system measurements with precise dimensions: Inside Diameter (ID) of 0.172", Outside Diameter (OD) of 1", Diameter A of 0.355", Diameter B of 0.531", Thickness ranging from 0.030" to 0.065", and an Overall Height of 0.187". It is manufactured for use with No. 8 screw size and features a material hardness of Rockwell B75. The product is fully compliant with RoHS 3 (2015/863/EU), ensuring it is free from restricted hazardous substances and suitable for various industrial and commercial applications requiring environmental responsibility.