S-98370A007 0.156" ID x 0.312" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel material, ideal for harsh or humid environments, reducing maintenance and replacement costs.
• Precise dimensional fit with 0.156" ID and 0.312" OD, ensuring reliable alignment and load distribution for No. 6 screws in assembly applications.
• Enhanced durability and wear resistance due to Rockwell B83 hardness, providing long-term performance under mechanical stress.
• Consistent thickness tolerance between 0.049" and 0.068", offering uniform pressure distribution and preventing fastener loosening.
• Compliance with environmental regulations, meeting RoHS 3 and REACH standards for safe use in global industrial markets.
• Versatile application support across various industries, from machinery to electronics, due to reliable inch-system measurements.

Professional Applications & Engineering Value

This 18-8 Stainless Steel Flat Washer is engineered to address common industrial challenges such as corrosion-induced failure and inconsistent load bearing. The stainless steel composition provides excellent resistance to rust and chemicals, making it suitable for outdoor, marine, or chemical processing equipment where moisture exposure is frequent. With precise 0.156" ID and 0.312" OD dimensions, it ensures a snug fit for No. 6 screw sizes, minimizing vibration and distributing clamp load effectively to prevent surface damage. The flat washer design and Rockwell B83 hardness contribute to reliable performance in high-stress assemblies, such as automotive components, electrical enclosures, and machinery frames, enhancing the longevity and safety of fastened joints.

Specification Summary & Compliance

This flat washer adheres to inch-system measurements with an inner diameter of 0.156", outer diameter of 0.312", and thickness ranging from 0.049" to 0.068", ensuring dimensional accuracy for consistent performance. It is manufactured from 18-8 Stainless Steel and meets standard hardness requirements (Rockwell B83) for reliable mechanical properties. The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious industrial applications without hazardous substances.