S-91144A131 37 mm ID x 66 mm OD DIN 6916, ISO 7416 Structural Washers

Key Features & Benefits at a Glance

• Superior load distribution with 66mm outer diameter to prevent surface damage and fastener loosening under high stress
• Exceptional hardness and durability with Rockwell C45 black steel construction for extended service life in demanding applications
• Precision fitment with 37mm inner diameter ensuring perfect alignment with M36 fasteners
• Regulatory compliance assurance meeting DIN 6916 and ISO 7416 standards for consistent quality and interchangeability
• Enhanced corrosion resistance through black steel surface treatment for reliable performance in harsh environments
• Environmental responsibility with full RoHS 3 and REACH compliance for sustainable operations
• Optimal thickness range (5.4-6.6mm) providing ideal compression and spacing capabilities

Professional Applications & Engineering Value

This heavy-duty M36 flat washer delivers critical engineering solutions for industrial applications where vibration resistance and structural integrity are paramount. The black steel construction with Rockwell C45 hardness provides exceptional mechanical strength that prevents deformation under extreme loads, while the precise 37mm ID/66mm OD dimensions ensure perfect fitment with M36 fasteners. Engineered to DIN 6916 and ISO 7416 standards, these metric flat washers are ideal for heavy machinery, structural steel connections, and industrial equipment where reliable load distribution and corrosion resistance are essential. The robust 5.4-6.6mm thickness range maintains consistent performance in high-vibration environments, making them indispensable for applications requiring long-term reliability and safety compliance.

Specification Summary & Compliance

This flat washer features precise dimensional specifications including 37mm inner diameter, 66mm outer diameter, and 5.4-6.6mm thickness range. Manufactured to exacting DIN 6916 and ISO 7416 standards for dimensional accuracy and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors. The Rockwell C45 hardness rating guarantees consistent mechanical properties and durability in demanding applications.