S-98689A111 2.7 mm ID x 5 mm OD DIN 433; ISO 7092 General Purpose Washers

General Purpose Washers

1247FA00335 General Purpose Washers
1247FA00335 General Purpose Washers

Image may differ from product. See technical specification for details.

Part No.
Part No. 1247FA00335
Equivalent to mcmaster :
98689A111

Basic Information

System of Measurement Metric
Washer Type Flat
Specifications Met DIN 433; ISO 7092

Dimension Parameters

ID 2.7 mm
OD 5 mm
Thickness 0.4-0.6 mm

Material & Strength Parameters

Material 18-8 Stainless Steel
Hardness Rockwell B76

Installation & Application Parameters

For Screw Size M2.5

Finish & Compliance Parameters

RoHS RoHS 3 (2015/863/EU) Compliant
REACH REACH (EC 1907/2006) (01/17/2023, 233 SVHC) Compliant
Technical Drawings No drawings available at the moment, will be launched soon
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Key Features & Benefits at a Glance

  • Superior corrosion resistance from 18-8 stainless steel construction, ideal for harsh environments and long-term reliability.
  • Precise dimensional fit with a 2.7mm ID and 5mm OD ensures perfect alignment and load distribution for M2.5 screws.
  • Consistent performance guaranteed by a controlled thickness (0.4-0.6mm) and Rockwell B76 hardness for reliable, repeatable use.
  • Guaranteed interchangeability through compliance with DIN 433 and ISO 7092 international standards.
  • Enhanced assembly durability by preventing surface damage and loosening under vibration and load.
  • Safe for regulated industries as it is fully compliant with RoHS 3 and REACH environmental directives.
  • Broad material compatibility with 18-8 stainless steel, offering excellent value for general-purpose and precision applications.

Professional Applications & Engineering Value

This M2.5 metric flat washer is engineered to solve critical assembly challenges in precision applications. Made from 18-8 stainless steel, it provides excellent resistance to rust and corrosion, which is vital for electronics, instrumentation, and outdoor equipment where environmental factors can compromise fastener integrity. The precise 2.7mm internal diameter and 5mm outer diameter ensure a perfect fit for M2.5 screws, preventing misalignment and distributing clamp load effectively to protect sensitive surfaces from damage. Its compliance with DIN 433 and ISO 7092 standards guarantees dimensional consistency and reliability in automated or high-volume production lines, reducing the risk of assembly failures and maintenance downtime.

Specification Summary & Compliance

This flat washer features a 2.7mm ID, 5mm OD, and 0.4-0.6mm thickness for M2.5 screw sizes, manufactured to DIN 433 and ISO 7092 specifications for dimensional accuracy and performance. The material is 18-8 Stainless Steel with a Rockwell B76 hardness. The product is confirmed to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and safety regulations for industrial and commercial use.

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