S-91475A439 0.377" ID x 0.68" OD ASME B18.21.1; MS35338-141 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
- Black-oxide coated 18-8 stainless steel provides excellent corrosion resistance in harsh environments
- Rockwell C35 hardness ensures long-term durability and maintains spring tension
- Precision 0.377" ID ensures perfect fit for 3/8" screws without slippage
- ASME B18.21.1 and MS35338-141 compliance guarantees consistent quality and reliability
- RoHS 3 and REACH compliance meets environmental regulations for global industrial use
- Standard split lock design offers easy installation and reliable locking performance
Professional Applications & Engineering Value
This heavy-duty split lock washer delivers exceptional engineering value in applications where vibration-induced fastener failure is a critical concern. The Black-Oxide 18-8 Stainless Steel construction provides superior corrosion resistance, making it ideal for outdoor equipment, marine applications, and industrial machinery exposed to moisture and chemicals. The split lock design creates continuous spring tension that compensates for thermal expansion and vibration, preventing costly downtime from loose fasteners. With Rockwell C35 hardness, these washers maintain their locking force through repeated stress cycles, ensuring long-term reliability in demanding industrial washers applications. The precise 0.377" ID guarantees optimal fitment for 3/8" fasteners, eliminating installation issues and ensuring consistent performance across production runs.
Specification Summary & Compliance
This split lock washer features precise dimensional specifications with 0.377" ID, 0.68" OD, and 0.094" thickness, engineered for 3/8" screw applications. Manufactured to ASME B18.21.1 and MS35338-141 standards, ensuring consistent quality and performance. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting current environmental regulations for industrial components. Made from 18-8 stainless steel with black-oxide surface treatment and Rockwell C35 hardness rating for optimal durability and corrosion resistance in inch system applications.
