S-94744A245 0.344" ID x 0.625" OD ASME B18.21.1 ASME Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc plating, extending service life in humid or outdoor industrial environments.
• Precise fit and load distribution thanks to the 0.344" ID and 0.625" OD, ensuring stability for 5/16" screws and reducing surface damage.
• Consistent mechanical strength with Rockwell B40 hardness, providing reliable performance under vibration and heavy loads.
• Guaranteed dimensional accuracy as per ASME B18.21.1 standards, ensuring interchangeability and ease of assembly in manufacturing.
• Enhanced safety and compliance with RoHS 3 and REACH regulations, making them suitable for global supply chains and sensitive applications.
• Optimized thickness range (0.056-0.071") for effective spacing and shock absorption without adding unnecessary bulk.
• Durable zinc-plated steel construction offers excellent wear resistance, reducing maintenance needs in high-stress setups.

Professional Applications & Engineering Value

These zinc-plated steel flat washers are engineered to address common industrial challenges such as fastener loosening, surface abrasion, and corrosion-induced failures. The inch-system dimensions (0.344" ID x 0.625" OD) ensure a precise match for 5/16" screws, distributing clamp load evenly to prevent joint fatigue in machinery, automotive assemblies, and structural frameworks. The zinc plating provides a protective barrier against rust and chemical exposure, crucial for outdoor equipment or humid environments. With Rockwell B40 hardness, these washers maintain integrity under repetitive stress, making them ideal for heavy-duty applications like construction, HVAC systems, and industrial manufacturing where reliability and compliance with ASME B18.21.1 standards are paramount.

Specification Summary & Compliance

This flat washer meets precise dimensional tolerances as defined by ASME B18.21.1, with an inner diameter of 0.344", outer diameter of 0.625", and thickness ranging from 0.056" to 0.071". It is manufactured from zinc-plated steel and complies with RoHS 3 (2015/863/EU) under exemption 6(a) for lead in steel alloys, as well as REACH (EC 1907/2006) regulations, ensuring environmental and safety standards are upheld for industrial use.