S-91571A310 3/4"-10 x 5" 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 demanding applications
- Superior durability from Rockwell C19 hardness steel construction that resists wear and deformation
- Optimized load distribution through the partially threaded design with 3 5/8" grip length for enhanced joint stability
- Easy installation and removal with external hex drive and 1 1/4" head width for standard tool compatibility
- Precise thread engagement with Class 2A UNC coarse threads ensuring consistent fastening performance
- Industry compliance assurance meeting ASME B18.2.6, ASTM A325, and ASTM F3125 specifications
- Environmental responsibility with RoHS 3 and REACH compliance for sustainable operations
Professional Applications & Engineering Value
Engineered for heavy-duty structural applications, this Grade A325 hex head screw delivers critical performance where failure is not an option. The steel construction with Rockwell C19 hardness provides exceptional resistance to shear forces and vibration-induced loosening, making it ideal for construction, bridgework, and industrial machinery assembly. The UNC coarse thread pattern combined with Class 2A precision ensures rapid installation without compromising joint integrity, while the partially threaded design concentrates strength where needed most. This industrial-grade fastener solves common engineering challenges by maintaining clamp load under dynamic stresses and environmental exposure, ensuring long-term structural reliability in your most demanding projects.
Specification Summary & Compliance
This heavy-duty hex head screw features precise Class 2A thread fit with UNC coarse threading (3/4"-10) and right-hand thread direction. Manufacturing complies with ASME B18.2.6 dimensional standards and ASTM A325/ASTM F3125 material specifications. The fastener maintains full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for global industrial applications requiring strict chemical substance control.
