S-96659A129 0.188" ID x 0.438" OD ASME B18.21.1 SAE Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance from 18-8 stainless steel with black-oxide finish, ideal for harsh environments
• Precise dimensional fit with 0.188" ID and 0.438" OD ensures perfect compatibility with No. 8 screws
• Enhanced load distribution through flat washer design prevents surface damage and loosening
• Industry-standard compliance with ASME B18.21.1 guarantees consistent quality and interchangeability
• Environmental regulation adherence with RoHS 3 and REACH compliance for global supply chain integration
• Durable material construction maintains performance under vibration and thermal stress
• Optimized thickness range (0.036-0.065") provides flexibility for various clamping requirements

Professional Applications & Engineering Value

These SAE flat washers deliver critical engineering solutions where corrosion resistance and dimensional precision are paramount. The black-oxide 18-8 stainless steel construction provides exceptional protection against oxidation and chemical exposure, making them ideal for industrial equipment, outdoor machinery, and marine applications. The precise 0.188" ID ensures secure fitment with No. 8 screws while the 0.438" OD effectively distributes clamping forces to prevent surface damage and maintain joint integrity. Engineered to ASME B18.21.1 standards, these washers eliminate compatibility issues in maintenance and assembly operations, reducing downtime and replacement costs across manufacturing, automotive, and construction sectors.

Specification Summary & Compliance

Manufactured to ASME B18.21.1 specifications with inch system dimensions: 0.188" ID, 0.438" OD, and thickness range 0.036-0.065". These flat washers maintain standard dimensional tolerances for reliable performance with No. 8 screw sizes. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental responsibility and global market acceptance.