S-91309A855 3/4"-10 x 5" 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 in heavy-duty applications
- Rockwell B69 hardness provides excellent durability and resistance to wear
- Class 2A thread fit offers consistent, precision assembly with standard nuts
- Coarse UNC threading enables quick installation and reduced cross-threading risks
- Full threading along the 5" length allows for adjustable grip and versatile fastening depths
- External hex drive design facilitates easy installation with common tools and high torque application
Professional Applications & Engineering Value
Engineered for demanding industrial settings, these 3/4"-10 UNC hex head screws provide a robust fastening solution where vibration resistance and structural integrity are critical. The high-strength steel construction, combined with zinc plating, effectively combats corrosion in outdoor or high-moisture environments such as construction, machinery assembly, and infrastructure projects. The coarse thread design ensures rapid installation and secure holding power in wood, metal, and composite materials, reducing assembly time while maintaining ASME B18.2.1 compliance for consistent quality and interchangeability. Ideal for heavy equipment, structural frames, and industrial maintenance, these screws deliver long-term reliability under high-stress conditions.
Specification Summary & Compliance
This product features a Class 2A thread fit per UNC standards, ensuring precise tolerance for reliable mating with nuts. Manufactured in accordance with ASME B18.2.1 and ASTM A307 specifications, it guarantees dimensional accuracy and performance consistency. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), it meets environmental and safety regulations, providing a responsible choice for global industrial applications.
