S-98119A121 1.531" ID x 2.75" OD ASTM F436 Type 1 Structural Washers
Structural Washers
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Basic Information
Dimension Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior corrosion resistance with hot-dipped galvanized steel coating for long-lasting protection in harsh environments
- Exceptional load distribution with 2.75" OD and 1.531" ID to prevent surface damage and maintain joint integrity
- Enhanced durability with Rockwell C38 hardness rating for reliable performance under heavy loads
- Precise compatibility with 1 3/8" screw sizes for secure fastening in industrial assemblies
- Industry-standard compliance with ASTM F436 Type 1 specifications ensuring consistent quality and performance
- Optimal thickness range of 0.136-0.177" providing reliable spacing and vibration resistance
- Environmental responsibility with REACH compliance for safe use in regulated applications
Professional Applications & Engineering Value
These hot-dipped galvanized steel flat washers deliver critical engineering solutions for demanding industrial environments. The ASTM F436 Type 1 certification guarantees consistent mechanical properties, while the heavy-duty construction with precise 1.531" ID and 2.75" OD dimensions ensures optimal load distribution across mating surfaces. The zinc coating provides exceptional barrier protection against corrosion, significantly extending service life in outdoor construction, marine applications, and industrial machinery. Engineered for 1 3/8" screw sizes, these washers prevent bolt loosening from vibration and maintain clamping force in structural connections, making them ideal for bridge construction, heavy equipment assembly, and infrastructure projects where reliability is paramount.
Specification Summary & Compliance
Manufactured to ASTM F436 Type 1 standards with dimensional precision including 1.531" inner diameter, 2.75" outer diameter, and 0.136-0.177" thickness range. Features Rockwell C38 hardness for consistent mechanical performance and meets REACH compliance (EC 1907/2006) for environmental safety. Designed specifically for use with 1 3/8" screw sizes in inch measurement system applications.
