S-91475A780 0.753" ID x 1.265" OD ASME B18.21.1; MS35338-146 Mil. Spec. Split Lock Washers

Key Features & Benefits at a Glance

• Exceptional vibration resistance due to the split lock design, preventing fastener loosening in high-stress applications
• Superior corrosion protection from the black-oxide coating on 316 stainless steel, ideal for harsh industrial environments
• Precision dimensional fit with 0.753" ID and 1.265" OD, ensuring reliable performance with 3/4" screws
• Enhanced durability from Rockwell C35 hardness, providing long-term mechanical integrity under load
• Guaranteed compliance with ASME B18.21.1 and MS35338-146 standards, ensuring consistent quality and interchangeability
• Environmental responsibility with RoHS 3 and REACH compliance, meeting global regulatory requirements
• Broad industrial compatibility in inch measurement systems, simplifying procurement and replacement

Professional Applications & Engineering Value

This split lock washer delivers critical vibration resistance in demanding applications such as heavy machinery, marine equipment, and chemical processing systems. The black-oxide 316 stainless steel construction provides exceptional corrosion resistance against chlorides and acidic environments, significantly extending service life in corrosive conditions. Its standard split lock design creates continuous spring tension that compensates for thermal expansion and dynamic loads, preventing joint failure. Engineered for 3/4" screw applications, it maintains clamp force in high-vibration environments where standard flat washers would fail, reducing maintenance downtime and improving operational safety across industrial and manufacturing sectors.

Specification Summary & Compliance

This washer meets dimensional specifications per ASME B18.21.1 and MS35338-146 standards, ensuring precise fit and functional reliability. The black-oxide 316 stainless steel material provides consistent performance with Rockwell C35 hardness for mechanical durability. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations confirms environmental safety and restricted substance adherence, making it suitable for global industrial supply chains requiring certified components.