S-91358A020 0.915" ID x 1.76" OD ASME B18.2.6; ASTM F959 Type A325 Tension-Indicating Structural Washers

Key Features & Benefits at a Glance

• Visual installation verification through orange tension-indicating dye that clearly shows when proper preload is achieved
• Exceptional load-bearing capacity with 39,000 lbs tension rating for critical structural applications
• Premium steel construction with Rockwell C37 hardness for superior durability and resistance to deformation
• Industry-standard compliance meeting ASME B18.2.6 and ASTM F959 Type A325 specifications for reliable performance
• Precise dimensional fit with 0.915" ID and 1.76" OD designed specifically for 7/8" screw applications
• Environmental responsibility with full RoHS 3 and REACH compliance for sustainable operations
• Consistent thickness control between 0.142-0.149" ensuring uniform load distribution and reliable performance

Professional Applications & Engineering Value

Our tension indicating washers provide critical engineering solutions for heavy-duty industrial applications where bolt tension accuracy is paramount. The orange tension-indicating dye serves as a visual confirmation system that eliminates guesswork during installation, preventing both under-tightening and over-tightening scenarios that can compromise structural integrity. Manufactured from high-strength steel with precise dimensional control, these washers maintain consistent performance in demanding environments such as structural steel connections, heavy machinery assembly, and critical infrastructure projects. The combination of 39,000 lbs tension capacity and Rockwell C37 hardness ensures reliable performance under extreme loads while resisting deformation and maintaining clamping force over time.

Specification Summary & Compliance

This tension indicating washer features precise dimensional specifications including 0.915" inner diameter, 1.76" outer diameter, and thickness ranging from 0.142" to 0.149" specifically engineered for 7/8" screw applications. The product strictly conforms to ASME B18.2.6 and ASTM F959 Type A325 manufacturing standards, ensuring dimensional accuracy and performance reliability. Environmental compliance is maintained through RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted substances while meeting the latest regulatory requirements for industrial components.