S-91169A214 12.7 mm ID x 21.1 mm OD DIN 127B Split Lock Washers
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 environments, ensuring long-term joint integrity.
- Hardened steel construction with Rockwell C44 hardness provides excellent durability and resistance to wear and deformation.
- Precise DIN 127B standard compliance guarantees dimensional accuracy and reliable performance in metric assemblies.
- Optimized split lock design creates a consistent spring action and locking force against M12 screws.
- RoHS 3 and REACH compliance ensures environmental safety and meets strict international regulatory standards.
- Wide industrial compatibility due to standard metric sizing (12.7mm ID, 21.1mm OD) for versatile application use.
- Consistent 2.3-2.7mm thickness offers reliable performance and ease of installation in various fastener setups.
Professional Applications & Engineering Value
This M12 DIN 127B split lock washer is engineered to solve critical issues of vibration-induced loosening in industrial machinery, automotive assemblies, and heavy equipment. Made from hardened steel with a Rockwell C44 hardness, it maintains its spring tension under cyclic loads, preventing back-off and reducing maintenance downtime. The split lock washer type and precise metric dimensions ensure a perfect fit for M12 screw sizes, providing reliable locking in demanding environments. Its vibration-resistant properties make it ideal for motors, pumps, and structural frameworks where safety and reliability are paramount. The RoHS 3 and REACH compliant construction further supports use in regulated sectors, offering peace of mind for industrial applications.
Specification Summary & Compliance
This washer meets DIN 127B specifications, ensuring precise internal diameter (12.7 mm), outer diameter (21.1 mm), and thickness (2.3-2.7 mm) for M12 screw sizes. It conforms to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, affirming its compliance with environmental and safety regulations for industrial use.
