S-91100A110 2.7 mm ID x 8 mm OD DIN 9021 Oversized Washers

Key Features & Benefits at a Glance

• Enhanced Corrosion Resistance: Zinc-plated steel construction provides reliable protection against rust and environmental degradation, extending the washer's service life in demanding industrial settings.
• Precise Fit for M2.5 Screws: With a 2.7mm inner diameter, this washer ensures accurate alignment and secure fastening, reducing the risk of assembly errors and improving overall joint integrity.
• Optimal Load Distribution: The 8mm outer diameter and 0.7-0.9mm thickness help distribute pressure evenly, minimizing surface damage and preventing loosening under vibration or dynamic loads.
• Consistent Mechanical Performance: Rockwell B56 hardness offers a balance of strength and ductility, ensuring the washer maintains its shape and function under repeated stress without deforming.
• Standardized Reliability: Compliance with DIN 9021 guarantees dimensional accuracy and interchangeability, facilitating seamless integration into metric-based assembly systems and reducing procurement complexities.
• Environmental and Safety Compliance: Meets RoHS 3 and REACH standards, ensuring the washer is free from hazardous substances and safe for use in regulated industries, while supporting sustainable manufacturing practices.
• Durable Industrial Use: Designed for long-term reliability in precision applications, these washers resist wear and corrosion, contributing to lower maintenance costs and enhanced equipment uptime.

Professional Applications & Engineering Value

These M2.5 metric flat washers are engineered to address common industrial challenges such as fastener loosening, surface damage, and corrosion in precision assemblies. Made from zinc-plated steel, they provide a robust barrier against moisture and chemicals, which is critical in environments like automotive, electronics, and machinery where exposure to harsh conditions can compromise fastener integrity. The DIN 9021 standard ensures tight dimensional tolerances, allowing for consistent performance in high-vibration applications. By distributing clamp load effectively with their 8mm OD and 0.7-0.9mm thickness, these washers prevent stress concentration on sensitive components, reducing the risk of material fatigue and extending the lifespan of assembled products. This makes them ideal for use in precision washers scenarios, where reliability and compliance with RoHS 3 and REACH standards are paramount for both safety and regulatory adherence.

Specification Summary & Compliance

This washer features precise dimensions with an inner diameter of 2.7mm, outer diameter of 8mm, and thickness ranging from 0.7-0.9mm, adhering to the DIN 9021 standard for flat washers to ensure accurate fit and function. Manufactured from zinc-plated steel with a Rockwell B56 hardness, it meets rigorous mechanical and corrosion resistance requirements. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from restricted substances and safe for industrial use, supporting environmental and health standards in global supply chains.