S-91090A112 0.406" ID x 1" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in harsh industrial environments
• Precise dimensional fit with 0.406" ID specifically engineered for 3/8" screws, ensuring secure fastening without slippage
• Optimal load distribution through 1" OD design, minimizing surface damage and maintaining joint integrity
• Consistent thickness control (0.056-0.071") for uniform pressure application and reliable performance under vibration
• Full regulatory compliance with RoHS 3 and REACH standards, meeting global environmental and safety requirements
• Versatile industrial compatibility with inch measurement system, facilitating easy integration into existing assembly lines
• Cost-effective maintenance solution through durable steel construction, reducing replacement frequency and downtime

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these zinc-plated steel flat washers provide critical protection against galvanic corrosion and environmental degradation. The precision inch dimensions (0.406" ID × 1" OD) ensure perfect compatibility with 3/8" screw sizes, eliminating misalignment issues in assembly operations. The zinc plating creates a sacrificial barrier that significantly extends fastener life in moisture-prone environments, while the controlled thickness variation maintains consistent clamping force in vibrating machinery. These industrial washers serve as essential components in automotive manufacturing, construction frameworks, and heavy equipment assembly where corrosion-resistant fastening solutions prevent joint failure and reduce maintenance costs.

Specification Summary & Compliance

This flat washer features inch system dimensions with 0.406" internal diameter, 1" outer diameter, and thickness ranging 0.056-0.071" for 3/8" screw applications. Manufactured from zinc-plated steel for enhanced durability, the product maintains full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to international environmental and safety standards for industrial components.