S-91475A440 0.44" ID x 0.776" OD ASME B18.21.1; MS35338-142 Mil. Spec. Split Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance through spring-tension design that maintains consistent locking force under dynamic loads
• Enhanced corrosion protection with Black-Oxide coated 18-8 Stainless Steel construction for harsh industrial environments
• Optimal hardness performance at Rockwell C35 rating ensures durability without compromising flexibility
• Precise dimensional compatibility with 7/16" fasteners and standard split lock washer configuration for reliable fit
• Industry-standard compliance meeting ASME B18.21.1 and MS35338-142 specifications for quality assurance
• Environmental regulation adherence with RoHS 3 and REACH compliance for global industrial applications
• Dependable spring action that compensates for thermal expansion and prevents fastener loosening

Professional Applications & Engineering Value

This split lock washer delivers critical vibration-resistant performance for demanding industrial applications where fastener security is paramount. The Black-Oxide 18-8 Stainless Steel construction provides exceptional corrosion resistance while maintaining the necessary spring characteristics for reliable locking action. Engineered to prevent rotational loosening in high-vibration environments such as heavy machinery, automotive assemblies, and industrial equipment, this washer addresses the common challenge of fastener failure due to dynamic loads. The standard split lock design creates continuous upward force against the fastener head or nut, maintaining clamp load integrity even under extreme operating conditions. With precise dimensional specifications including 0.44" ID and 0.776" OD, this component ensures compatibility with 7/16" fasteners across various industrial applications requiring dependable vibration protection.

Specification Summary & Compliance

This split lock washer features precise dimensional specifications with 0.44" inner diameter, 0.776" outer diameter, and 0.109" thickness, engineered for 7/16" screw applications. Manufactured to meet ASME B18.21.1 and MS35338-142 standards, ensuring consistent performance and interchangeability. The component maintains Rockwell C35 hardness for optimal balance between strength and flexibility. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for global industrial distribution and use in regulated industries.