S-91100A342 3.3 mm ID x 8.7 mm OD DIN 7349 Oversized Washers
Oversized Washers
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Basic Information
Dimension Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Enhanced corrosion protection through zinc-plated steel construction, extending service life in demanding environments
- Precise load distribution with 8.7mm outer diameter and 3.3mm inner diameter, preventing surface damage and maintaining joint integrity
- Reliable performance with Class 8.8 fasteners, ensuring compatibility with high-strength bolting applications
- Consistent dimensional accuracy manufactured to DIN 7349 standards for guaranteed interchangeability
- Optimal thickness control (0.7-0.9mm) providing uniform pressure distribution without adding excessive bulk
- Regulatory compliance assurance with RoHS 3 and REACH standards for global industrial use
- Durable steel core material offering excellent mechanical strength and long-term reliability
Professional Applications & Engineering Value
These M3 zinc-plated steel flat washers deliver critical engineering solutions for industrial assembly challenges. The DIN 7349 compliance ensures precise dimensional stability, while the zinc plating provides essential corrosion resistance in humid or chemically aggressive environments. Engineered specifically for Class 8.8 fasteners, these metric washers prevent loosening under vibration and distribute clamping forces evenly across mating surfaces. Their optimized 3.3mm ID and 8.7mm OD dimensions create perfect alignment in M3 fastener applications, reducing stress concentrations in automotive, machinery, and electrical enclosure assemblies. The controlled 0.7-0.9mm thickness maintains joint integrity without compromising space constraints in compact designs.
Specification Summary & Compliance
Manufactured to DIN 7349 standard specifications with metric dimensions: 3.3mm inner diameter, 8.7mm outer diameter, and 0.7-0.9mm thickness range. Compatible with M3 screw sizes and engineered for use with Class 8.8 fastener strength grade. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe usage across industrial sectors.
