S-93516A172 1/2"-13 x 3 1/4" ASME B18.2.1 Bronze Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance for long-lasting performance in marine and harsh industrial environments
• High tensile strength of 70,000 PSI ensures reliable load-bearing capacity in demanding applications
• Rockwell B70 hardness provides excellent durability and resistance to wear and deformation
• Class 2A thread fit offers optimal assembly ease while maintaining secure fastening integrity
• External hex drive design enables quick installation and removal with standard tools
• Full threading along the 3 1/4" length allows for maximum adjustment and gripping power
• Compliance with ASME B18.2.1, RoHS 3, and REACH ensures quality, safety, and environmental responsibility

Professional Applications & Engineering Value

Engineered for challenging environments where corrosion resistance and structural integrity are paramount, these 651 Silicon Bronze hex head screws deliver exceptional performance in marine construction, chemical processing, and coastal infrastructure. The UNC coarse thread design provides superior holding power in softer materials and faster installation in production settings. With 70,000 PSI tensile strength and Rockwell B70 hardness, these fully threaded fasteners maintain reliability under vibration and load stress, while the external hex drive ensures compatibility with standard industrial tools for efficient maintenance and assembly operations.

Specification Summary & Compliance

This 1/2"-13 UNC hex head screw features Class 2A thread fit for standard tolerance applications, manufactured to ASME B18.2.1 specifications for dimensional accuracy and performance. The fastener is RoHS 3 (2015/863/EU) compliant and meets REACH (EC 1907/2006) environmental standards, ensuring safe use in regulated industries. With a 3 1/4" length, 3/4" head width, and right-hand coarse threading, this screw delivers consistent performance across industrial and marine applications.