S-91236A861 3/4"-10 x 7" ASME B18.2.1, ASTM A307 Low-Strength Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 60,000 psi ensures reliable performance in heavy-duty and high-stress applications.
• Superior corrosion resistance provided by the zinc plating, extending the screw's service life in various environments.
• Coarse UNC thread design enables faster installation and better grip in a wide range of materials, reducing assembly time.
• Precise Class 2A thread fit guarantees consistent, secure fastening with reduced risk of cross-threading or loosening.
• Partially threaded shank allows for effective clamping where only a specific section needs to be engaged, providing versatile application use.
• High hardness (Rockwell B69) offers excellent wear resistance and durability under mechanical stress and repeated use.
• Compliance with ASME B18.2.1 and ASTM A307 ensures the screw meets rigorous industrial standards for quality and safety.

Professional Applications & Engineering Value

This 3/4"-10 UNC Hex Head Screw is engineered to address critical needs in industrial and construction settings where joint integrity is paramount. The steel material and zinc plating work together to combat corrosion, making it ideal for outdoor machinery, structural frameworks, and equipment exposed to moisture. Its coarse thread and external hex drive facilitate quick, secure installation with standard tools, reducing labor time in assembly lines or field maintenance. The partial threading allows precise control in applications requiring unthreaded shank sections for shear resistance, commonly used in bolted connections for beams, brackets, and heavy-duty fastening systems. By meeting ASME B18.2.1 specifications, it ensures dimensional accuracy and load-bearing reliability, minimizing failure risks in demanding environments.

Specification Summary & Compliance

This screw features a 3/4"-10 UNC coarse thread with Class 2A thread fit for standard tolerance, a 7" length, and partial threading with a minimum thread length of 2". It is manufactured in accordance with ASME B18.2.1 and ASTM A307 standards, ensuring consistent quality and performance. Additionally, the product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming adherence to environmental and safety regulations for hazardous substances.