S-98370A121 1.562" ID x 3.75" OD Oversized Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from 18-8 stainless steel construction for reliable performance in harsh industrial environments
• Exceptional load distribution with a large 3.75" outer diameter that minimizes surface pressure and prevents material damage
• Precision dimensional fit with 1.562" inner diameter ensuring perfect compatibility with 1 1/2" screw sizes
• Enhanced durability and strength from Rockwell B68 hardness rating that withstands heavy-duty applications
• Consistent thickness control between 0.170-0.200" for uniform clamping force and reliable assembly performance
• Full regulatory compliance with RoHS 3 and REACH standards for safe use in global markets
• Long-term reliability in inch system applications with maintained dimensional stability under stress

Professional Applications & Engineering Value

This heavy-duty flat washer delivers critical engineering value through its 18-8 stainless steel composition, providing exceptional corrosion resistance that extends service life in demanding environments like marine, chemical processing, and outdoor construction. The precise 1.562" ID ensures perfect alignment with 1 1/2" screw sizes, eliminating installation issues and reducing assembly time. With its substantial 3.75" OD, this industrial-grade flat washer effectively distributes clamping force over wider surface areas, preventing joint loosening and protecting sensitive materials from damage. The controlled 0.170-0.200" thickness and Rockwell B68 hardness provide consistent performance in high-vibration applications, making it ideal for structural fastening, heavy machinery, and infrastructure projects where reliability is paramount.

Specification Summary & Compliance

This precision flat washer features inch system dimensions with 1.562" inner diameter and 3.75" outer diameter, manufactured to exacting standards for reliable performance. The 0.170-0.200" thickness range ensures dimensional consistency across production batches. Manufactured from 18-8 stainless steel with Rockwell B68 hardness for optimal strength characteristics. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting the latest environmental and safety standards for industrial components.