S-98370A030 0.406" ID x 0.875" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from 18-8 Stainless Steel construction, ideal for harsh environments and outdoor applications.
• Enhanced load distribution with a 0.875" outer diameter, preventing surface damage and fastener loosening under stress.
• Precise fit for 3/8" screws with a 0.406" inner diameter, ensuring secure, vibration-resistant assemblies.
• Exceptional mechanical strength due to Rockwell B83 hardness, offering reliable performance in high-torque applications.
• Guaranteed material safety with full RoHS 3 and REACH compliance, meeting strict industrial and environmental regulations.
• Consistent dimensional accuracy in inch measurements, providing reliable interchangeability and ease of installation.
• Durable, long-lasting service life thanks to the material's inherent resistance to rust and oxidation.

Professional Applications & Engineering Value

This 18-8 Stainless Steel flat washer is engineered to solve critical challenges in industrial assembly, such as corrosion-induced failure and joint instability. Its robust Rockwell B83 hardness ensures it maintains integrity under high clamping forces, while the precise 0.406" ID and 0.875" OD dimensions provide optimal load distribution for 3/8" screw applications. Commonly used in machinery, construction, and marine equipment, this washer extends the lifespan of assemblies by preventing galvanic corrosion and surface indentation, making it a cost-effective choice for heavy-duty and corrosive environments.

Specification Summary & Compliance

This flat washer adheres to standard inch system dimensions with an inner diameter of 0.406", outer diameter of 0.875", and thickness ranging from 0.105" to 0.130". It is manufactured from 18-8 Stainless Steel and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances and suitable for global industrial use.