S-91309A846 3/4"-10 x 2 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
- Class 2A thread fit offers consistent, easy assembly while maintaining secure fastening
- External hex drive design allows for high-torque installation with standard tools
- Full threading along the 2 3/4" length enables maximum grip and adjustability in various material thicknesses
- Coarse UNC thread pattern facilitates quick installation and reduces cross-threading risks
Professional Applications & Engineering Value
This high-strength steel hex head screw with zinc plating is engineered to solve critical fastening challenges in heavy machinery, structural steel connections, and industrial equipment assembly. The 3/4"-10 UNC coarse thread configuration provides excellent holding power in both metal and wood applications, while the external hex drive enables efficient installation even in confined spaces. With its 60,000 psi tensile strength and Rockwell B69 hardness, this fastener maintains integrity under extreme vibration and load conditions, preventing costly downtime and maintenance. The fully threaded design ensures maximum thread engagement across various material thicknesses, making it ideal for construction, manufacturing, and infrastructure projects requiring reliable, long-lasting connections.
Specification Summary & Compliance
This 3/4"-10 UNC hex head screw features Class 2A thread fit per inch system standards, ensuring precise dimensional accuracy and compatibility. Manufactured to ASME B18.2.1 specifications with ASTM A307 material compliance, the fastener delivers consistent performance. Environmental and safety compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for global industrial applications without hazardous substance restrictions.
