S-90474A133 1.062" ID x 3" OD ASME B18.21.1 ASME Washers

Key Features & Benefits at a Glance

• Exceptional load distribution with 3" outer diameter to prevent surface damage and maintain joint integrity under heavy loads
• Superior corrosion resistance through zinc yellow-chromate plating for extended service life in harsh industrial environments
• High-strength performance with Grade 8 classification and Rockwell C38 hardness to withstand extreme mechanical stress
• Precision dimensional fit with 1" inner diameter ensuring perfect compatibility with 1" screw sizes
• Reliable thickness consistency between 0.146-0.174" for uniform pressure distribution and vibration resistance
• Industry-standard compliance with ASME B18.21.1 specifications for guaranteed quality and interchangeability
• Environmental responsibility with RoHS 3 and REACH compliance meeting strict international regulatory standards

Professional Applications & Engineering Value

These Grade 8 heavy-duty flat washers deliver critical engineering solutions for industrial applications where failure is not an option. The zinc yellow-chromate plated steel construction provides exceptional corrosion resistance in demanding environments including marine, chemical processing, and outdoor infrastructure. With Rockwell C38 hardness and Grade 8 strength classification, these washers maintain bolt preload under extreme vibration and thermal cycling, preventing joint loosening in heavy machinery, structural steel connections, and high-torque applications. The generous 3" outer diameter distributes clamping force effectively across softer materials, while the precise 1" inner diameter ensures perfect alignment with standard 1" screw sizes. Engineered to ASME B18.21.1 standards, these washers provide reliable performance in critical assembly operations where dimensional consistency and material integrity are paramount.

Specification Summary & Compliance

This flat washer features precise dimensional specifications with 1.062" inner diameter, 3" outer diameter, and thickness ranging 0.146-0.174". Manufactured from zinc yellow-chromate plated steel with Rockwell C38 hardness and Grade 8 strength classification. Compliant with ASME B18.21.1 standard specifications for dimensional requirements and quality assurance. Meets RoHS 3 (2015/863/EU) compliance for hazardous substance restrictions and REACH (EC 1907/2006) regulations for chemical safety. Designed for use with 1" screw sizes in inch measurement system applications.