S-93837A120 4.4 mm ID x 7 mm OD DIN 7980 Split Lock Washers for Socket Head Screws
Split Lock Washers for Socket Head Screws
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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 due to the split lock design, ensuring fasteners stay securely in place under dynamic loads and reducing maintenance needs.
- Enhanced corrosion protection with zinc-plated steel construction, extending service life in humid or industrial environments.
- High hardness (Rockwell C44) provides excellent durability and resistance to deformation under high-stress conditions.
- Precise M4 screw compatibility with a 4.4mm inner diameter and 7mm outer diameter, ensuring easy installation and reliable fit for metric assemblies.
- Compliance with DIN 7980 standards guarantees consistent quality, dimensional accuracy, and interchangeability in European engineering applications.
- RoHS 3 and REACH compliance ensures environmental safety and regulatory adherence, making it suitable for global supply chains.
- Cost-effective reliability as a standard split lock washer, offering proven performance for repetitive industrial use without premium pricing.
Professional Applications & Engineering Value
This M4 metric split lock washer is engineered to address common industrial challenges like vibration-induced loosening in machinery, automotive, and electrical assemblies. Crafted from zinc-plated steel, it combats corrosion while maintaining Rockwell C44 hardness to withstand cyclic stresses without losing tension. The split design creates a spring-like action that applies constant pressure, preventing back-off in high-vibration environments. Ideal for DIN 7980-compliant applications, it ensures precision in metric fastening systems, reducing downtime and enhancing safety in sectors from manufacturing to renewable energy installations.
Specification Summary & Compliance
This washer features a 4.4mm inner diameter, 7mm outer diameter, and 1.1–1.3mm thickness, designed for M4 screw sizes with standard split lock type. It adheres to DIN 7980 specifications for dimensional accuracy and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and health standards for industrial use.
