S-93413A120 4.3 mm ID x 9 mm OD DIN 125; ISO 7089 General Purpose Washers

Key Features & Benefits at a Glance

• Enhanced corrosion protection with black-coated steel for extended service life in harsh environments
• Precise dimensional accuracy with 4.3mm ID and 9mm OD ensuring perfect fit for M4 screws
• Superior load distribution with consistent 0.7-0.9mm thickness to prevent surface damage
• Certified mechanical strength with Rockwell B75 hardness for reliable performance under pressure
• Global standard compliance meeting DIN 125 and ISO 7089 specifications for international projects
• Environmental responsibility through RoHS 3 and REACH compliance for sustainable operations
• Reduced maintenance costs through durable construction that withstands industrial wear

Professional Applications & Engineering Value

These M4 flat washers deliver critical engineering solutions where corrosion resistance and dimensional precision are paramount. The black corrosion-resistant coated steel construction prevents rust formation in humid or chemical-exposed environments, significantly extending component lifespan in industrial applications such as machinery assembly, electrical enclosures, and outdoor equipment. Manufactured to DIN 125 and ISO 7089 standards, these metric flat washers ensure perfect compatibility with M4 fasteners while the controlled thickness (0.7-0.9mm) provides optimal surface pressure distribution, preventing joint loosening and material deformation. The Rockwell B75 hardness guarantees consistent performance under vibration and load variations, making them ideal for automotive, manufacturing, and infrastructure projects requiring reliable fastening solutions.

Specification Summary & Compliance

This M4 flat washer features precise metric dimensions with 4.3mm inner diameter, 9mm outer diameter, and 0.7-0.9mm thickness range. Manufactured according to DIN 125 and ISO 7089 standards for dimensional accuracy and performance consistency. The components are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory adherence for global industrial applications.