S-93852A123 1.625" ID x 3.5" OD ASME B18.21.1 USS Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments due to 316 stainless steel construction, ideal for marine and chemical applications
• Enhanced load distribution with large 3.5" OD and 1.625" ID, reducing surface pressure and preventing material damage
• Reliable dimensional consistency with precise thickness (0.153-0.213") ensuring uniform performance in heavy-duty assemblies
• Industry-standard compliance with ASME B18.21.1 specifications, guaranteeing interchangeability and engineering reliability
• Environmental regulation adherence through RoHS 3 and REACH compliance, supporting sustainable manufacturing practices
• Optimized screw compatibility designed specifically for 1 1/2" fasteners, minimizing installation errors and improving assembly efficiency
• Long-term durability with stainless steel's inherent resistance to pitting and crevice corrosion, extending service life in demanding conditions

Professional Applications & Engineering Value

These 316 stainless steel USS flat washers deliver critical performance advantages in industrial settings where corrosion resistance and structural integrity are paramount. The USS designation ensures robust load-bearing capacity for heavy machinery, construction equipment, and marine applications. With superior resistance to chlorides and acidic environments, these inch-system washers prevent fastener loosening and surface degradation in chemical processing plants, offshore platforms, and coastal installations. The precise 1.625" ID x 3.5" OD dimensions create an optimal bearing surface that distributes clamping forces evenly, protecting soft materials and reducing stress concentration around 1 1/2" screw connections. This engineering solution addresses common failure points in high-vibration environments while maintaining compliance with international standards.

Specification Summary & Compliance

Manufactured to ASME B18.21.1 dimensional standards with inch-system measurements: 1.625" inner diameter, 3.5" outer diameter, and 0.153-0.213" thickness range. These USS flat washers maintain standard tolerances for reliable performance in 1 1/2" screw applications. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental responsibility and workplace safety standards are met.