S-98690A109 2.7 mm ID x 5 mm OD DIN 433 General Purpose Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments due to 316 stainless steel construction, ideal for chemical processing and marine applications.
• Enhanced load distribution and joint integrity with precise 2.7mm ID and 5mm OD dimensions, preventing surface damage and loosening.
• Excellent mechanical durability supported by Rockwell B75 hardness, ensuring long-term performance under vibration and stress.
• Guaranteed dimensional accuracy and interchangeability through strict adherence to DIN 433 standards.
• Safe for sensitive applications with full compliance to RoHS 3 and REACH regulations, containing no hazardous substances.
• Reliable performance in thin-section assemblies with a controlled 0.5-0.6mm thickness, maintaining stability without adding bulk.
• Broad compatibility with M2.5 screws, making it a versatile component for metric fastener systems in electronics and precision engineering.

Professional Applications & Engineering Value

Engineered for demanding industrial settings, these M2.5 metric flat washers made from 316 stainless steel address critical challenges like galvanic corrosion, chemical exposure, and mechanical fatigue. The DIN 433 certification ensures precise fit and consistent performance in automated assembly lines, reducing installation errors. With a Rockwell B75 hardness, they maintain shape under high clamp loads, preventing failure in vibrating machinery, electrical enclosures, and automotive subsystems. The corrosion-resistant properties make them suitable for offshore equipment, food processing plants, and medical devices, where hygiene and longevity are paramount. Their slim profile (0.5-0.6mm thickness) allows efficient use in compact designs without compromising on load-bearing capacity.

Specification Summary & Compliance

This flat washer conforms to DIN 433 specifications with an inner diameter of 2.7mm, outer diameter of 5mm, and thickness tolerance of 0.5-0.6mm. It is manufactured from 316 stainless steel with a hardness of Rockwell B75, ensuring dimensional stability and strength. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted substances for safe use in global markets.