S-91950A054 1.375" ID x 2.5" OD ASME B18.21.1 SAE Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial and marine environments
• Precise dimensional fit with 1.375" ID and 2.5" OD ensuring reliable performance with 1 1/4" screws
• Enhanced load distribution due to optimal thickness range (0.136-0.192") for improved joint integrity
• Guaranteed interchangeability through compliance with ASME B18.21.1 dimensional standards
• Environmental and safety compliance with RoHS 3 and REACH regulations for global supply chain compatibility
• Durable long-term performance in corrosive conditions, reducing maintenance and replacement frequency
• Broad application versatility across industries requiring inch-system fasteners with high corrosion resistance

Professional Applications & Engineering Value

Engineered for demanding environments, these 316 stainless steel SAE flat washers provide exceptional resistance to chlorides, acids, and industrial chemicals, making them indispensable in marine equipment, chemical processing plants, and offshore structures. The precise inch-system dimensions (1.375" ID, 2.5" OD) and controlled thickness ensure uniform load distribution, preventing fastener loosening and surface damage under vibration or thermal cycling. By adhering to ASME B18.21.1 standards, these washers deliver reliable sealing and spacing functions, solving common issues like galvanic corrosion and premature failure in high-moisture and saline applications. Their compliance with stringent environmental regulations further supports sustainable and safe operations in global industrial projects.

Specification Summary & Compliance

This SAE flat washer features an inner diameter of 1.375", outer diameter of 2.5", and thickness ranging from 0.136" to 0.192", designed for use with 1 1/4" screws. Manufactured from 316 stainless steel, it conforms to ASME B18.21.1 dimensional and mechanical specifications, ensuring consistent quality and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted hazardous substances and supporting environmental and workplace safety standards.