S-91309A843 3/4"-10 x 2" 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 harsh industrial environments
- High tensile strength of 60,000 PSI ensures reliable performance under heavy loads and vibration
- Class 2A thread fit provides consistent assembly and disassembly without galling or seizing
- External hex drive design allows for high-torque installation with standard tools, reducing assembly time
- Rockwell B69 hardness maintains structural integrity and resists wear during repeated use
- Fully threaded shank offers maximum grip length and uniform stress distribution in connections
- Coarse UNC threading enables quick engagement and reduced cross-threading risks in field applications
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, these 3/4"-10 UNC hex head screws address critical challenges in structural assembly and machinery maintenance. The high-strength steel construction combined with zinc plating provides durable protection against rust and chemical exposure, making them ideal for outdoor equipment, construction frameworks, and manufacturing plants. The external hex drive and coarse thread design facilitate rapid installation in high-volume production lines, while the Class 2A thread fit ensures precise alignment and reduces the risk of thread damage. These fully threaded fasteners deliver consistent clamping force across joints, minimizing loosening under dynamic loads and enhancing overall system reliability.
Specification Summary & Compliance
This product features Class 2A thread fit tolerance with UNC coarse threading per ASME standards, ensuring dimensional accuracy and interchangeability. Manufacturing complies with ASME B18.2.1 specifications (ASTM A307 grade) for consistent quality. The screws are fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting environmental and safety regulations for industrial use worldwide.
