S-91102A033 0.512" ID x 0.869" OD ASME B18.21.1 Split Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance prevents fastener loosening in high-stress industrial environments
• Zinc-plated steel construction provides excellent corrosion protection for extended service life
• Rockwell C38 hardness rating ensures consistent spring tension and reliable locking performance
• Precision 0.512" ID design guarantees perfect fit for 1/2" screw applications
• ASME B18.21.1 compliance delivers verified quality and dimensional accuracy
• RoHS 3 & REACH compliance meets international environmental and safety standards
• Heavy-duty 0.125" thickness withstands extreme mechanical loads and repeated use

Professional Applications & Engineering Value

This split lock washer delivers critical vibration resistance in demanding industrial settings where mechanical fasteners face constant stress and movement. The zinc-plated steel construction provides dual benefits: the steel core maintains Rockwell C38 hardness for consistent spring action, while the zinc coating protects against corrosion in harsh environments. Engineered to ASME B18.21.1 standards, this washer solves common industrial challenges including fastener loosening in machinery, equipment vibration, and assembly reliability. The 0.512" ID ensures precise compatibility with 1/2" screws, making it ideal for manufacturing equipment, automotive assemblies, and heavy machinery where secure fastening is non-negotiable.

Specification Summary & Compliance

This standard split lock washer features precise dimensions: 0.512" ID, 0.869" OD, and 0.125" thickness, manufactured to ASME B18.21.1 specifications for dimensional accuracy and performance reliability. The washer maintains Rockwell C38 hardness throughout its zinc-plated steel construction and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring safe use across global industrial applications.