S-5185N114 0.45" ID x 0.776" 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 protection and durability
• Rockwell C38 hardness rating ensures long-term performance under heavy loads
• Precision dimensions (0.45" ID, 0.776" OD) guarantee perfect fit for 7/16" screws
• ASME B18.21.1 certification delivers reliable, standardized performance
• RoHS 3 and REACH compliance meets environmental regulations for global use
• Standard split lock design offers easy installation and consistent spring action

Professional Applications & Engineering Value

These black-oxide steel split lock washers are engineered to solve critical vibration-induced loosening problems in industrial assemblies. The split lock washer design creates continuous spring tension that maintains clamping force despite shock, vibration, and thermal cycling. With Rockwell C38 hardness, these washers withstand repeated compression cycles without losing their spring properties, making them ideal for heavy machinery, automotive systems, and construction equipment where reliability is paramount. The black-oxide surface treatment provides corrosion resistance in demanding environments, while the precise 0.45" internal diameter ensures perfect compatibility with 7/16" screw sizes across various industrial applications.

Specification Summary & Compliance

Manufactured to ASME B18.21.1 specifications with dimensional accuracy including 0.45" ID, 0.776" OD, and 0.109" thickness. These standard split lock washers meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance standards, ensuring environmental responsibility. The inch system measurement and Rockwell C38 hardness guarantee consistent performance in industrial fastening applications requiring reliable vibration resistance.