S-91525A414 0.25" ID x 1" OD Oversized Washers

Key Features & Benefits at a Glance

• Exceptional corrosion resistance from 316 stainless steel construction, ideal for harsh chemical and marine environments
• Precise dimensional fit with 0.25" ID specifically designed for No. 12 screws, ensuring secure fastening and load distribution
• Superior surface protection with 1" OD providing maximum bearing area to prevent surface damage and embedding
• Enhanced mechanical durability with Rockwell B68 hardness rating for long-term performance under heavy loads
• Consistent thickness control (0.060-0.090") for uniform pressure distribution and vibration resistance
• Full regulatory compliance with RoHS 3 and REACH standards, meeting global industrial safety requirements
• Optimized for inch-system applications ensuring seamless integration with existing industrial equipment and standards

Professional Applications & Engineering Value

These 316 stainless steel flat washers deliver critical engineering solutions where corrosion resistance and mechanical integrity are paramount. The marine-grade 316 stainless steel composition provides superior protection against chloride-induced stress corrosion cracking, making these industrial washers ideal for chemical processing plants, offshore installations, and coastal infrastructure. The precise 0.25" inner diameter ensures perfect alignment with No. 12 screws, while the generous 1" outer diameter distributes clamping forces effectively to prevent joint loosening and surface damage. The controlled 0.060-0.090" thickness range maintains consistent preload in bolted connections, addressing common vibration-related failure points in heavy machinery, structural frameworks, and processing equipment.

Specification Summary & Compliance

Manufactured to standard inch system dimensions with 1" outer diameter and 0.25" inner diameter specifically engineered for No. 12 screw size applications. Features controlled thickness tolerance of 0.060-0.090" and material hardness of Rockwell B68. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to international environmental and safety standards for industrial components.