S-98029A039 1.156" ID x 2.25" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from black-oxide steel coating, extending service life in harsh industrial environments
• Optimal load distribution with precise 0.199-0.224" thickness range, preventing surface damage and fastener loosening
• Perfect compatibility with 1 1/8" screw sizes through accurate 1.156" ID, ensuring secure fastening connections
• Heavy-duty construction with 2.25" OD providing maximum bearing surface for high-stress applications
• Regulatory compliance with RoHS 3 and REACH standards, meeting international environmental and safety requirements
• Dimensional precision in inch system measurements, guaranteeing consistent performance across industrial assemblies
• Versatile industrial application across machinery, construction, and equipment requiring reliable flat washers

Professional Applications & Engineering Value

This black-oxide steel flat washer delivers exceptional engineering value through its specialized material composition and dimensional accuracy. The black-oxide surface treatment creates a protective barrier against oxidation and chemical exposure, significantly reducing maintenance frequency in corrosive environments like outdoor construction sites or manufacturing facilities with high humidity. The precise 1.156" inner diameter ensures perfect alignment with 1 1/8" screw sizes, eliminating installation issues while the generous 2.25" outer diameter distributes clamping force effectively across joined surfaces. This combination addresses common industrial pain points including joint failure, surface deformation, and corrosion-induced fastener degradation, making it ideal for heavy machinery assembly, structural steel connections, and industrial equipment maintenance where reliable load distribution and long-term performance are critical.

Specification Summary & Compliance

This flat washer maintains dimensional accuracy with 1.156" ID and 2.25" OD in inch system measurements, featuring controlled thickness between 0.199-0.224" for consistent performance. Manufactured from black-oxide coated steel, the product complies with RoHS 3 (2015/863/EU) under exemption 6(a) for lead as an alloying element in steel and meets REACH (EC 1907/2006) requirements updated through January 17, 2023, including 233 SVHC substances. Designed specifically for use with 1 1/8" screw sizes in industrial fastening applications requiring reliable flat washers.