S-5185N121 1.024" ID x 1.656" OD ASME B18.21.1 Split Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance prevents fastener loosening in high-stress applications
• Black-oxide steel construction provides excellent corrosion resistance and durability
• Rockwell C38 hardness rating ensures long-lasting performance under heavy loads
• Precision 1.024" ID and 1.656" OD dimensions guarantee perfect fit for 1" screws
• 0.25" thickness delivers optimal spring tension and reliable locking action
• ASME B18.21.1 compliance assures consistent quality and engineering standards
• RoHS 3 and REACH compliance meets environmental regulations for global applications

Professional Applications & Engineering Value

Our 1" split lock washer delivers critical vibration resistance in demanding industrial environments where fastener security is paramount. The black-oxide steel construction provides enhanced corrosion protection, making it ideal for automotive assemblies, heavy machinery, construction equipment, and manufacturing systems exposed to harsh conditions. The standard split lock design creates continuous spring tension that counteracts rotational forces, preventing costly downtime from loosened connections. With Rockwell C38 hardness, this washer maintains its structural integrity under extreme pressure and repeated stress cycles, offering reliable performance in critical fastening applications where safety and durability are non-negotiable.

Specification Summary & Compliance

This split lock washer features precise dimensional specifications with 1.024" inner diameter, 1.656" outer diameter, and 0.25" thickness, engineered for perfect compatibility with 1" screws. Manufactured to ASME B18.21.1 standards, it ensures consistent quality and performance in industrial fastening applications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting the latest environmental and safety requirements for global industrial use.