S-91571A290 3/4"-10 x 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 tensile strength of 120,000 psi ensures reliable performance in high-stress structural and industrial applications.
- Rockwell C19 hardness provides superior resistance to wear and deformation, extending service life under heavy loads.
- Coarse UNC threading with Class 2A fit allows for faster installation and reduced risk of cross-threading in rugged environments.
- Partially threaded design offers optimal grip length (5/8") for secure clamping in structural joints without unnecessary thread engagement.
- External hex drive and 1 1/4" head width enable high-torque application with standard tools, ensuring tight, vibration-resistant connections.
- Compliance with ASME B18.2.6, ASTM A325, and ASTM F3125 guarantees consistent quality and interoperability in regulated construction projects.
- RoHS 3 and REACH compliance ensures environmental safety and material traceability for global supply chain requirements.
Professional Applications & Engineering Value
Engineered for heavy-duty structural fastening, these Grade A325 hex head screws address critical challenges in construction and industrial assembly where joint integrity is paramount. The high-strength steel construction, combined with UNC coarse threading and partial threading, prevents loosening under dynamic loads and simplifies alignment in steel frameworks. The external hex drive facilitates efficient installation with common wrenches, reducing labor time while maintaining 120,000 psi tensile strength to withstand extreme forces. Ideal for structural bolting in bridges, buildings, and machinery, these screws deliver predictable performance under ASME B18.2.6 specifications, ensuring compliance and reliability in engineered systems.
Specification Summary & Compliance
This screw features precise Class 2A thread fit with 3/4"-10 UNC coarse threads and a thread length of 1 3/8". Manufacturing adheres to ASME B18.2.6, ASTM A325, and ASTM F3125 standards for dimensional accuracy and mechanical properties. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting environmental and safety regulations for industrial use.
