S-94241A280 0.322" ID x 0.457" OD ASME B18.21.1 Split Lock Washers for Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial environments and chemical exposure
• Exceptional vibration resistance due to the split lock design, preventing fastener loosening under dynamic loads
• Reliable spring action and locking force from the standard split design and Rockwell C35 hardness for secure, long-term fastening
• Precise dimensional fit with 0.322" ID and 0.457" OD, ensuring compatibility with 5/16" screws and consistent performance
• Compliance with industry standards per ASME B18.21.1, guaranteeing quality, interchangeability, and engineering reliability
• Environmental and safety compliance with RoHS 3 and REACH, making them safe for regulated applications and global supply chains
• Durable, heavy-duty performance from 0.093" thickness and robust material, suitable for high-stress mechanical assemblies

Professional Applications & Engineering Value

Engineered for demanding environments, these 316 stainless steel split lock washers provide critical vibration resistance in machinery, automotive, and marine applications where fastener failure is not an option. The split lock washer type: standard design exerts continuous spring tension, countering rotational forces and thermal cycling that cause loosening. Made from 316 stainless steel, they offer excellent corrosion resistance against chlorides and acids, extending service life in chemical processing, offshore, and food industry equipment. Their inch system measurements (e.g., 5/16" screw size) ensure seamless integration with existing North American assemblies, reducing installation errors and maintenance downtime. By meeting ASME B18.21.1, these washers deliver predictable performance, supporting engineering calculations for load distribution and safety factors in heavy-duty locking scenarios.

Specification Summary & Compliance

This washer features an ID of 0.322", OD of 0.457", and thickness of 0.093", designed for 5/16" screw sizes in the inch system. It conforms to ASME B18.21.1 for dimensional and functional requirements, ensuring reliable spring action and locking performance. The washer is manufactured from 316 stainless steel with a hardness of Rockwell C35, providing durability and consistent mechanical properties. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) (as of 06/14/2023, 235 SVHC), confirming adherence to environmental and health safety standards for industrial use.