S-93516A178 1/2"-13 x 7 1/2" ASME B18.2.1 Bronze Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance from 651 Silicon Bronze material, ideal for marine and harsh industrial environments where rust prevention is critical.
• High mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness, ensuring reliable performance under heavy loads and stress.
• Secure and efficient fastening with coarse UNC threading and external hex drive, providing excellent grip and easy installation with standard tools.
• Optimized for demanding applications featuring a partially threaded design for controlled clamping and a substantial 7 1/2" length for deep material penetration.
• Guaranteed dimensional accuracy with Class 2A thread fit, ensuring consistent, precise mating with nuts and threaded holes.
• Compliance with major industry standards including ASME B18.2.1, ensuring quality, interchangeability, and reliability in professional use.
• Environmentally responsible manufacturing with full RoHS 3 and REACH compliance, meeting strict global regulations for hazardous substances.

Professional Applications & Engineering Value

This 1/2"-13 UNC Hex Head Screw is engineered from 651 Silicon Bronze, a material renowned for its superior corrosion resistance, making it an indispensable industrial fastener for marine hardware, chemical processing equipment, and offshore structures. The coarse thread design ensures rapid assembly and reduced susceptibility to galling in abrasive conditions, while the external hex drive allows for high-torque application with common wrenches. Its partially threaded shank provides a non-threaded bearing surface for enhanced shear strength, preventing joint loosening under vibration. With a 70,000 psi tensile strength, it delivers reliable performance in heavy-duty applications where failure is not an option, effectively solving challenges related to durability and environmental degradation.

Specification Summary & Compliance

This screw adheres to Class 2A thread fit tolerances for consistent accuracy and is manufactured in accordance with the ASME B18.2.1 standard for hex head bolts. It is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring it meets the latest environmental and safety regulations for hazardous substances.