S-93837A340 8.1 mm ID x 12.7 mm OD DIN 7980 Split Lock Washers for Socket Head Screws

Key Features & Benefits at a Glance

• Superior vibration resistance with the split lock design that maintains tension under dynamic loads, preventing fastener loosening in machinery and equipment.
• Enhanced corrosion protection from the zinc yellow-chromate plating, ideal for humid or corrosive industrial environments, extending service life.
• Consistent mechanical performance with Rockwell C44 hardness, ensuring the washer retains its shape and locking force under high-stress conditions.
• Precise metric fit with 8.1 mm inner diameter and 12.7 mm outer diameter, designed for reliable installation on M8 screws without slippage.
• Guaranteed industrial quality through DIN 7980 compliance, providing assurance of dimensional accuracy and material standards for safe, repeatable use.
• Easy identification and sourcing as a standard split lock washer type, simplifying procurement and inventory management in B2B supply chains.
• Durable steel construction with controlled thickness (1.9-2.1 mm), offering robust support and reusability in assembly and maintenance tasks.

Professional Applications & Engineering Value

This M8 metric split lock washer is engineered to address common industrial challenges such as vibration-induced fastener failure and corrosion in harsh settings. The zinc yellow-chromate plated steel material provides a protective barrier against moisture and chemicals, reducing maintenance downtime in applications like automotive assemblies, electrical enclosures, and heavy machinery. Its split design applies continuous spring force, compensating for thermal expansion and load variations to keep M8 fasteners securely locked. By meeting DIN 7980 standards, it ensures precise thread engagement and reliable performance in high-vibration environments, making it a cost-effective solution for engineers seeking long-term vibration resistance and compliance with global industrial specifications.

Specification Summary & Compliance

This washer adheres to DIN 7980 specifications for dimensional accuracy, including an inner diameter of 8.1 mm, outer diameter of 12.7 mm, and thickness range of 1.9-2.1 mm, ensuring consistent fit for M8 screw sizes. Manufactured from steel with a Rockwell C44 hardness, it meets rigorous mechanical property requirements. The zinc yellow-chromate plating offers corrosion resistance, and the product complies with industry standards for quality and safety, often aligning with RoHS and REACH directives for environmental safety in industrial fastener applications.