S-92856A130 0.125" ID x 0.5" OD Dished Washers

Key Features & Benefits at a Glance

• Superior oversized hole compensation with precise 0.125" ID and 0.5" OD dimensions for reliable No. 4 screw seating in irregular openings
• Exceptional corrosion resistance through zinc-plated steel construction, extending service life in humid or outdoor industrial environments
• Optimized load distribution with cup design geometry that prevents screw head pull-through in thin materials
• Consistent mechanical performance guaranteed by Rockwell B75 hardness rating for maintained dimensional stability under pressure
• Regulatory compliance assurance with RoHS 3 (2015/863/EU) certification for international manufacturing applications
• Precision thickness control between 0.030-0.065" ensures uniform clamping force across assembly surfaces
• Enhanced vibration resistance through cup-shaped design that maintains secure fastening in dynamic equipment applications

Professional Applications & Engineering Value

This zinc-plated steel cup washer addresses critical challenges in oversized hole applications where standard washers fail to provide adequate bearing surface. The specialized cup profile creates an optimal transition between No. 4 screw heads and enlarged clearance holes, effectively distributing clamp load across a wider area to prevent material deformation. Engineered with Rockwell B75 hardness, these precision washers maintain their structural integrity in heavy-duty industrial assemblies subjected to vibration and dynamic loads. The corrosion-resistant zinc plating ensures reliable performance in manufacturing equipment, outdoor enclosures, and electrical assemblies where environmental factors typically compromise fastener longevity. With precise 0.125" ID and 0.5" OD dimensions, this cup washer for oversized holes delivers consistent seating and eliminates the need for custom machining operations.

Specification Summary & Compliance

Manufactured to exacting dimensional standards with 0.125" inner diameter and 0.5" outer diameter, this cup washer maintains precise Class 2A thread compatibility for No. 4 screws. The zinc-plated steel construction meets industrial strength requirements with Rockwell B75 hardness rating, while thickness is controlled between 0.030-0.065" for consistent performance. Full compliance with RoHS 3 (2015/863/EU) regulations ensures environmental responsibility, making these inch system washers suitable for global manufacturing applications requiring restricted substance compliance.