S-91475A387 0.167" ID x 0.293" OD ASME B18.21.1; MS35338-137 Mil. Spec. Split Lock Washers
Mil. Spec. Split Lock Washers
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Basic Information
Dimension Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
Special Type Parameters
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Key Features & Benefits at a Glance
- Superior vibration resistance prevents fastener loosening in high-stress applications, ensuring long-term assembly integrity
- Exceptional corrosion resistance from Black-Oxide 316 Stainless Steel construction for reliable performance in harsh environments
- Optimized hardness (Rockwell C35) maintains spring tension and locking force without compromising material ductility
- Precision dimensional control with 0.167" ID and 0.293" OD ensures perfect fit for No. 8 screw applications
- Compliance with ASME B18.21.1 and MS35338-137 standards guarantees consistent quality and interchangeability
- Environmental regulation compliance with RoHS 3 and REACH meets global manufacturing requirements
- Split lock design provides immediate spring action and continuous tension for reliable locking performance
Professional Applications & Engineering Value
This split lock washer delivers critical vibration-resistant capabilities for industrial assemblies where mechanical stability is paramount. The Black-Oxide 316 Stainless Steel construction provides exceptional corrosion resistance in demanding environments including marine, chemical processing, and outdoor applications. The split ring design creates continuous spring tension that compensates for thermal expansion, vibration-induced loosening, and material relaxation. Engineered to ASME B18.21.1 specifications with precise dimensional control (0.167" ID for No. 8 screws), this washer maintains consistent locking force while the Rockwell C35 hardness ensures durability without brittleness. Ideal for machinery, electrical enclosures, and transportation equipment where reliable fastener security is non-negotiable.
Specification Summary & Compliance
This split lock washer features precise inch system dimensions: 0.167" ID × 0.293" OD × 0.040" thickness, specifically designed for No. 8 screw applications. Manufactured to ASME B18.21.1 and MS35338-137 standards, ensuring dimensional accuracy and performance reliability. The washer is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting current environmental and safety requirements for industrial components.
