S-99041A131 1.312" ID Square Washers

Key Features & Benefits at a Glance

• Enhanced load distribution with 3" square design for superior surface coverage and reduced surface pressure
• Reliable corrosion protection through zinc-plated steel construction for extended service life in harsh environments
• Optimized vibration resistance with 0.220-0.280" thickness range maintaining secure fastening under dynamic loads
• Precise compatibility with 1 1/4" screw sizes through 1.312" inner diameter for accurate component alignment
• Consistent mechanical performance ensured by Rockwell B40 hardness rating for dependable structural integrity
• Regulatory compliance assurance with RoHS 3 and REACH standards meeting international environmental requirements
• Dimensional stability in inch system measurements for seamless integration with existing industrial equipment

Professional Applications & Engineering Value

This heavy-duty square washer addresses critical engineering challenges in industrial assembly where standard washers fail. The zinc-plated steel construction provides essential corrosion resistance for outdoor equipment, machinery bases, and structural frameworks exposed to moisture and chemicals. The square configuration delivers superior load distribution compared to round washers, preventing surface deformation in soft materials and reducing maintenance frequency in high-vibration applications like heavy machinery, conveyor systems, and construction equipment. With precise 1.312" inner diameter matching 1 1/4" screw sizes, it ensures perfect alignment in critical joints while the substantial 3" width creates a stable bearing surface that resists embedding and maintains clamping force under sustained loads.

Specification Summary & Compliance

Manufactured to inch system standards with 1.312" inner diameter precisely matching 1 1/4" screw requirements. Features controlled thickness range of 0.220-0.280" for consistent performance and Rockwell B40 hardness for mechanical reliability. Compliant with RoHS 3 (2015/863/EU) under exemption 6(a) for lead as steel alloying element and REACH (EC 1907/2006) regulations current as of January 17, 2023, covering 233 SVHC substances.