S-93711A100 0.12" ID x 0.173" OD ASME B18.21.1 Split Lock Washers for Socket Head Screws

Key Features & Benefits at a Glance

• Superior vibration resistance through the split lock design that maintains consistent tension under dynamic loads
• Enhanced corrosion protection with Black-Oxide coated 18-8 Stainless Steel construction for harsh industrial environments
• Optimal hardness performance with Rockwell C35 rating ensuring dimensional stability and repeated use capability
• Precise fit for No. 4 screws with 0.12" ID and 0.173" OD dimensions preventing loosening in critical assemblies
• Reliable compliance meeting ASME B18.21.1 specifications for consistent quality and interchangeability
• Environmental responsibility with RoHS 3 and REACH compliance for safe use across regulated industries
• Reduced maintenance cycles through durable construction that withstands repeated installation and removal

Professional Applications & Engineering Value

These split lock washers deliver critical vibration-resistant performance in demanding applications where fastener security is paramount. The Black-Oxide 18-8 Stainless Steel construction provides exceptional corrosion resistance for outdoor equipment, marine components, and chemical processing installations. The standard split design creates continuous spring tension that compensates for thermal expansion, material relaxation, and impact vibrations in machinery, electrical enclosures, and automotive assemblies. With precise 0.12" ID dimensions engineered for No. 4 screw applications, these washers prevent rotational loosening while the Rockwell C35 hardness ensures the split lock maintains its deflection properties through multiple service cycles, reducing maintenance downtime and improving operational safety.

Specification Summary & Compliance

Manufactured to exacting dimensional standards with 0.12" internal diameter, 0.173" outer diameter, and 0.022" thickness for reliable performance in inch system applications. These standard split lock washers conform to ASME B18.21.1 specifications for mechanical properties and dimensional requirements. The products are fully compliant with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) regulations regarding chemical safety, ensuring they meet the latest environmental and safety standards for industrial procurement.