S-93516A121 5/16"-18 x 3/8" ASME B18.2.1 Bronze Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance for long-lasting performance in marine and harsh industrial environments
• High tensile strength of 70,000 psi ensures reliable fastening under heavy loads and stress
• Rockwell B70 hardness provides superior durability and resistance to wear and deformation
• Fully threaded UNC coarse design delivers faster installation and improved grip in various materials
• Class 2A thread fit guarantees consistent, precise engagement with standard nuts and tapped holes
• External hex drive allows for easy installation and removal with common tools
• Compliance with ASME B18.2.1, RoHS 3, and REACH ensures quality, safety, and environmental responsibility

Professional Applications & Engineering Value

Engineered for demanding environments, these 651 Silicon Bronze hex head screws provide critical corrosion resistance where standard fasteners fail. The UNC coarse thread design ensures rapid installation and reliable holding power in wood, metal, and composite materials, reducing assembly time and labor costs. With a 70,000 psi tensile strength and Rockwell B70 hardness, they maintain integrity under vibration and load, making them ideal for marine equipment, chemical processing, and offshore structures. The external hex drive facilitates secure tightening in confined spaces, while the fully threaded construction offers uniform stress distribution for enhanced joint reliability.

Specification Summary & Compliance

This 5/16"-18 UNC hex head screw features a Class 2A thread fit for standard tolerance and interchangeability. Manufactured to ASME B18.2.1 specifications, it ensures dimensional accuracy and performance consistency. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety standards for industrial use.