S-91169A070 2.9 mm ID x 5.1 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.
- Precision-engineered split design applies continuous spring tension to maintain a secure, reliable lock on M2.5 screws.
- High-strength steel construction with Rockwell C44 hardness provides excellent durability and resistance to deformation under load.
- Strict compliance with DIN 127B standards guarantees dimensional accuracy and consistent, predictable performance in metric assemblies.
- RoHS 3 and REACH compliance ensures environmental safety and regulatory acceptance for global industrial supply chains.
- Optimized metric dimensions (2.9mm ID, 5.1mm OD) enable easy installation and perfect fit for M2.5 fastener applications.
- Standard split lock type design offers proven, cost-effective locking for a wide range of general industrial uses.
Professional Applications & Engineering Value
This M2.5 metric split lock washer is engineered to solve critical vibration-induced loosening in precision assemblies. Manufactured from high-carbon steel and heat-treated to Rockwell C44 hardness, it delivers exceptional spring action and fatigue resistance, maintaining clamping force in demanding environments like automotive electronics, machinery, and control panels. The DIN 127B compliant split design ensures consistent radial pressure and reliable reusability, while the zinc-plated or plain finish (as applicable) provides basic corrosion protection. By meeting RoHS 3 and REACH directives, it supports sustainable manufacturing and global compliance, making it an ideal choice for OEMs and MRO professionals requiring dependable vibration-resistant fastening in metric systems.
Specification Summary & Compliance
This washer conforms to DIN 127B dimensional and performance standards, with precise metric measurements: 2.9mm Inner Diameter, 5.1mm Outer Diameter, and 0.5-0.7mm Thickness. It is manufactured from steel with a hardness of Rockwell C44 and is designed for M2.5 screw sizes. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring adherence to environmental and safety regulations for industrial components.
