S-91571A286 3/4"-10 x 1 1/2" ASME B18.2.6, ASTM A325, ASTM F3125 Medium-Strength Steel Heavy Hex Head Screws for Structural Applications
Medium-Strength Steel Heavy Hex Head Screws for Structural Applications
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Exceptional structural integrity with 120,000 psi tensile strength for reliable performance in heavy-duty applications
- Superior durability and wear resistance due to Rockwell C19 hardness, extending service life in demanding environments
- Optimized for quick installation with external hex drive and fully threaded UNC coarse thread design
- Precise thread engagement with Class 2A thread fit ensuring secure fastening and vibration resistance
- Compliance with rigorous industry standards including ASME B18.2.6, ASTM A325, and ASTM F3125 for guaranteed quality
- Environmental responsibility through RoHS 3 and REACH compliance, meeting strict regulatory requirements
- Versatile 1½" length providing ample threading for robust connections in various material thicknesses
Professional Applications & Engineering Value
These Grade A325 hex head screws deliver critical engineering solutions for structural steel connections, heavy machinery assembly, and construction applications where failure is not an option. The high-strength steel construction combined with fully threaded UNC coarse threading provides superior clamping force distribution, effectively preventing joint loosening under dynamic loads and vibration. The external hex drive enables high-torque installation with standard tools, while the Class 2A thread fit ensures consistent engagement without binding. These heavy-duty fasteners solve critical challenges in bridge construction, industrial equipment manufacturing, and structural frameworks where 120,000 psi tensile strength and Rockwell C19 hardness are essential for long-term reliability.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 2A thread fit tolerance and UNC coarse thread specifications. Complies with ASME B18.2.6, ASTM A325, and ASTM F3125 manufacturing standards. Meets environmental regulations including RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) compliance for sustainable industrial use.
