S-90437A110 0.125" ID x 0.312" OD Adhesive-Back Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh environments and chemical exposure
• Reliable load distribution and surface protection due to precise SAE flat washer design and Rockwell B70 hardness
• Secure bonding in assemblies enabled by the integrated acrylic adhesive layer (0.039" thickness)
• Accurate fit for No. 4 screws with 0.125" ID and 0.312" OD, ensuring easy installation and vibration resistance
• Stable performance across temperatures from 50°F to 200°F, maintaining integrity in varied operating conditions
• Compliance with global regulations including RoHS 3 and REACH, ensuring safe use in industrial and export markets
• Durable, low-profile design with 0.031" thickness, providing long service life without adding bulk

Professional Applications & Engineering Value

This 316 stainless steel SAE flat washer is engineered to address critical challenges in industrial fastening, such as corrosion-induced failure and loosening under dynamic loads. The corrosion-resistant 316 material excels in aggressive settings—including marine, chemical processing, and outdoor equipment—where moisture and chemicals degrade standard washers. Its acrylic adhesive enhances assembly security by preventing back-off in vibrating machinery, reducing maintenance needs. With a temperature range of 50°F to 200°F, it maintains performance in applications like HVAC systems, electrical enclosures, and automotive components. The precise 0.125" ID and 0.312" OD ensure optimal fit for No. 4 screws, distributing clamp load evenly to protect surfaces and extend joint life, making it a reliable choice for B2B procurement in demanding sectors.

Specification Summary & Compliance

This washer adheres to SAE standards for inch-system flat washers, with dimensions including 0.125" ID, 0.312" OD, and 0.031" thickness. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free of hazardous substances and suitable for global industrial use. The Rockwell B70 hardness provides consistent durability, and the acrylic adhesive (0.039" thickness) supports secure fastening in temperature environments up to 200°F.