S-91309A710 1/2"-13 x 3/4" ASME B18.2.1, ASTM A307 Low-Strength Steel Hex Head Screws
Low-Strength Steel Hex Head Screws
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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
- Superior corrosion resistance with zinc plating, extending service life in demanding industrial environments
- High tensile strength of 60,000 psi ensures reliable performance under heavy loads and vibration
- Rockwell B69 hardness provides excellent durability and resistance to wear and deformation
- Coarse UNC thread design enables faster installation and better grip in various materials
- External hex drive with 3/4" head width offers secure tool engagement and high torque capability
- Class 2A thread fit guarantees consistent, precise mating with standard nuts and threaded holes
- Full threading along 3/4" length allows maximum adjustability and holding power in applications
Professional Applications & Engineering Value
This 1/2"-13 UNC hex head screw delivers exceptional engineering value in heavy-duty fastening applications. The high-strength steel construction combined with zinc plating addresses common industrial challenges including corrosion-induced failure and structural weakness. The coarse thread profile provides superior resistance to vibration loosening while enabling rapid assembly in construction equipment, machinery frames, and structural steel connections. The external hex drive design facilitates high-torque installation with standard tools, making it ideal for maintenance operations and production line applications where reliability and quick assembly are critical. These fully threaded hex screws maintain consistent clamping force across their entire length, preventing joint separation in dynamic load conditions.
Specification Summary & Compliance
This fastener features precision Class 2A thread fit with UNC coarse threading at 1/2"-13 size and 3/4" length. Manufactured to ASME B18.2.1 specifications with material compliance to ASTM A307 standards. The product is fully certified RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting the latest environmental and safety regulations for industrial components.
