S-98023A051 1.75" ID x 3.75" OD ASME B18.21.1 SAE Washers

Key Features & Benefits at a Glance

• Exceptional load distribution with 3.75" outer diameter to prevent surface damage and material embedment
• Superior corrosion resistance through zinc yellow-chromate plating for extended service life in harsh environments
• High-strength performance with Grade 8 classification and Rockwell C38 hardness for demanding applications
• Precise dimensional fit with 1.75" inner diameter designed specifically for 1 5/8" screw sizes
• Reliable compliance with ASME B18.21.1 standards ensuring consistent quality and performance
• Enhanced durability with thickness ranging from 0.153" to 0.213" for optimal compression resistance
• Regulatory safety with REACH compliance for environmentally responsible industrial use

Professional Applications & Engineering Value

These Grade 8 SAE flat washers provide critical engineering solutions for heavy-duty industrial applications where vibration resistance and load distribution are paramount. The zinc yellow-chromate plated steel construction offers superior corrosion protection in demanding environments such as construction equipment, agricultural machinery, and transportation systems. With their substantial 3.75" outer diameter and precise 1.75" inner diameter, these washers effectively distribute clamping forces over larger surface areas, preventing joint loosening and material deformation. The Rockwell C38 hardness ensures maintained performance under extreme pressure, while the ASME B18.21.1 compliance guarantees dimensional accuracy and reliability for critical fastening systems requiring consistent performance in inch measurement applications.

Specification Summary & Compliance

This heavy-duty flat washer meets precise dimensional requirements with 1.75" inner diameter, 3.75" outer diameter, and thickness ranging from 0.153" to 0.213". Manufactured from zinc yellow-chromate plated steel with Rockwell C38 hardness, the washer conforms to Grade 8 strength classification and ASME B18.21.1 specifications. The product is fully compliant with REACH regulations (EC 1907/2006) and designed for use with 1 5/8" screw sizes in inch system applications, ensuring reliable performance in industrial and construction environments.