S-98687A223 4 mm ID x 8 mm OD DIN 433 General Purpose Washers

Key Features & Benefits at a Glance

• Enhanced Component Identification: The distinctive blue dye coating allows for quick visual sorting and inventory management in assembly operations.
• Precision Fit for M4 Screws: The 4mm internal diameter ensures a perfect, secure fit with M4 fasteners, preventing misalignment and installation errors.
• Optimized Load Distribution: The 8mm outer diameter effectively spreads clamp load over a wider area, protecting sensitive surfaces from damage and reducing stress concentration.
• Durable Steel Construction: Made from robust steel, this washer provides reliable strength and longevity for general industrial applications.
• Assured Dimensional Consistency: Manufactured to DIN 433 standards, guaranteeing consistent 1.4-1.8mm thickness and precise geometry for repeatable performance.
• Vibration Mitigation: Helps maintain bolt preload and joint integrity by resisting loosening under dynamic loads and vibration.
• Streamlined Sourcing: Compliance with the widely recognized DIN 433 standard simplifies procurement and ensures part interchangeability.

Professional Applications & Engineering Value

This M4 flat washer is engineered to address common challenges in assembly and maintenance. The blue dyed steel construction not only provides corrosion resistance but also serves as a critical visual aid for quality control and part tracking in complex assemblies, such as electrical panels, machinery, and automotive sub-assemblies. Its precise metric dimensions, conforming to DIN 433, ensure reliable performance by preventing issues like nut sinking and surface marring. The flat design is fundamental for achieving proper load distribution, making it an indispensable component for maintaining joint integrity and protecting expensive components from excessive bearing stress in demanding industrial environments.

Specification Summary & Compliance

This flat washer features a 4mm internal diameter (ID) and 8mm outer diameter (OD) with a thickness ranging from 1.4mm to 1.8mm. It is designed for use with M4 screw sizes. The product is manufactured in accordance with the DIN 433 standard, ensuring dimensional accuracy and interchangeability. The material is blue dyed steel.