S-90107A039 1.188" ID x 2.5" OD General Purpose Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance for long-lasting performance in harsh industrial and marine environments
• Precise dimensional fit with 1.188" ID and 2.5" OD ensures secure seating for 1-1/8" screws
• Consistent load distribution across the 0.125" thickness to prevent surface damage and joint failure
• Excellent chemical resistance from 316 stainless steel composition for acidic or saline applications
• Full regulatory compliance with RoHS 3 and REACH standards for global supply chain integration
• Durable material integrity maintains washer shape and function under sustained pressure
• Interchangeable inch-system sizing simplifies replacement and inventory management

Professional Applications & Engineering Value

These 316 stainless steel flat washers deliver critical protection in demanding applications where corrosion threatens fastener integrity. The marine-grade composition resists pitting from chlorides and chemicals, while the precise inner diameter prevents misalignment with 1-1/8" screws. Engineers specify these industrial washers for offshore platforms, chemical processing equipment, and coastal infrastructure where corrosion resistance directly impacts maintenance cycles and structural safety. The optimized 2.5" outer diameter distributes clamping force effectively, reducing stress concentration on soft materials or painted surfaces.

Specification Summary & Compliance

Manufactured to standard inch system dimensions with 1.188" inner diameter, 2.5" outer diameter, and 0.118-0.132" thickness range. These flat washers comply with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring unrestricted use in industrial applications worldwide. The 316 stainless steel construction provides consistent performance without hardness rating requirements for general-purpose fastening applications.