S-98688A172 8.4 mm ID x 15 mm OD DIN 433 General Purpose Washers

General Purpose Washers

1247FA00320 General Purpose Washers
1247FA00320 General Purpose Washers

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

Part No.
Part No. 1247FA00320
Equivalent to mcmaster :
98688A172

Basic Information

System of Measurement Metric
Washer Type Flat
Specifications Met DIN 433

Dimension Parameters

ID 8.4 mm
OD 15 mm
Thickness 1.4-1.8 mm

Material & Strength Parameters

Material Zinc-Plated Steel
Hardness Not Rated

Installation & Application Parameters

For Screw Size M8

Finish & Compliance Parameters

RoHS RoHS 3 (2015/863/EU) Compliant
REACH REACH (EC 1907/2006) (06/14/2023, 235 SVHC) Compliant
Technical Drawings No drawings available at the moment, will be launched soon
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Key Features & Benefits at a Glance

  • Enhanced corrosion protection through zinc plating extends service life in humid or demanding industrial environments
  • Precise dimensional accuracy with 8.4mm ID and 15mm OD ensures perfect fit with M8 fasteners, preventing loosening
  • Optimized load distribution across 1.4-1.8mm thickness reduces surface pressure and prevents material damage
  • Guaranteed standardization through DIN 433 compliance ensures interchangeability and reliable performance
  • Environmental compliance with RoHS 3 and REACH regulations meets strict international manufacturing standards
  • Durable steel construction provides consistent mechanical strength for heavy-duty applications
  • Versatile industrial compatibility with metric fastener systems simplifies procurement and inventory management

Professional Applications & Engineering Value

These M8 metric flat washers deliver critical engineering solutions where corrosion resistance and dimensional precision are paramount. The zinc plated steel construction creates a protective barrier against oxidation, making them ideal for automotive assemblies, machinery frames, and outdoor equipment exposed to moisture. Their DIN 433 compliance ensures consistent thickness and diameter tolerances, preventing fastener slippage in high-vibration environments. The 15mm outer diameter provides optimal surface coverage while the 8.4mm inner diameter maintains secure positioning on M8 bolts. This combination addresses common industrial challenges including galvanic corrosion, joint failure, and assembly inaccuracies in manufacturing and construction applications.

Specification Summary & Compliance

Manufactured to DIN 433 standards with precise dimensional tolerances: 8.4mm inner diameter, 15mm outer diameter, and 1.4-1.8mm thickness range. Constructed from zinc plated steel for consistent performance. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, containing no restricted substances. Designed specifically for use with M8 screw sizes in metric fastening systems.

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