S-98049A420 0.344" ID x 0.75" OD Oversized Washers

Key Features & Benefits at a Glance

• Exceptional corrosion resistance from 17-4 PH stainless steel, ideal for harsh industrial environments and outdoor applications.
• Superior mechanical strength and durability with Rockwell C40 hardness, ensuring long-term performance under high stress and load.
• Precise dimensional fit with 0.344" ID and 0.75" OD, designed for reliable seating and uniform load distribution on 5/16" screws.
• Consistent thickness tolerance (0.105-0.130") for predictable compression and secure fastening in critical assemblies.
• Full regulatory compliance with RoHS 3 and REACH, providing safe, environmentally responsible components for global supply chains.
• Heavy-duty construction in the inch measurement system, suitable for demanding applications in aerospace, automotive, and machinery.
• Reduced maintenance and replacement costs due to high material integrity and resistance to wear and chemical exposure.

Professional Applications & Engineering Value

These 17-4 PH stainless steel flat washers are engineered to address common industrial challenges such as fastener loosening, surface damage, and corrosion-induced failure. The precipitation-hardening stainless steel material offers excellent strength-to-weight ratio and resistance to oxidation, making them ideal for high-stress environments including marine equipment, chemical processing plants, and structural assemblies. The precise inch system dimensions (ID: 0.344", OD: 0.75") ensure optimal compatibility with 5/16" screws, providing uniform load distribution and preventing bolt head or nut embedding. With a controlled thickness range of 0.105-0.130", these washers maintain consistent clamping force, reducing the risk of joint fatigue and improving the longevity of your mechanical systems in industrial washers applications.

Specification Summary & Compliance

This flat washer is manufactured to precise dimensional standards with an inner diameter of 0.344", outer diameter of 0.75", and thickness range of 0.105-0.130", designed for use with 5/16" screws in the inch measurement system. It meets industry expectations for mechanical properties with a Rockwell C40 hardness, ensuring reliable performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to environmental and safety standards for hazardous substances.