Value Collection 015279PR Hex Socket Cap Screw 3/8-16 Unc

Product Description

The VALUE COLLECTION 015279PR is a hex socket cap screw designed for high-strength fastening applications in mechanical assemblies, industrial equipment, and structural connections. It features a 3/8-16 UNC thread size with a 4.5-inch length under the head and a 5/16-inch hex drive socket. The fastener is made from alloy steel with a black oxide coating that provides mild corrosion resistance and reduces light reflection. It is partially threaded, which allows for improved clamping force in through-bolt applications. Machinists, maintenance technicians, and industrial assemblers install this type of fastener where torque requirements exceed what standard steel screws can handle.

This socket cap screw is suited for use in machine frames, jigs, fixtures, hydraulic components, and general industrial assemblies where a recessed hex drive is preferred over an external hex head. The partially threaded shank makes it well-suited for applications requiring a bearing surface or where precise hole alignment is needed. It meets ASME/ANSI B18.3, ASTM A574, and IFI 124 standards, making it appropriate for demanding mechanical and structural fastening tasks across manufacturing and maintenance environments.

Key Features

• 3/8-16 UNC thread for strong, standard-pitch engagement in imperial-threaded assemblies
• 4.5-inch length under head provides reach for thick material stacks or deep-clearance applications
• 5/16-inch hex socket drive allows high torque input with a standard hex key or socket driver
• Alloy steel construction delivers tensile strength above standard carbon steel fasteners
• Black oxide finish offers mild rust resistance and a low-glare appearance
• Partially threaded shank improves shear resistance and clamping in bolted joints
• Meets ASME/ANSI B18.3, ASTM A574, and IFI 124 dimensional and mechanical standards

Compatibility

Designed as an OEM-style replacement or standard-service hex socket cap screw for industrial machinery, machine tool fixtures, and mechanical assemblies requiring a 3/8-16 UNC partially threaded socket head fastener.

Installation Notes

Installation is typically performed by machinists or maintenance technicians using a 5/16-inch hex key or T-handle driver. Ensure the mating threaded hole or nut is clean and free of debris before driving the fastener. Do not exceed the rated torque for 3/8-16 alloy steel socket cap screws as specified in applicable ASME or equipment manufacturer guidelines. Apply a thread lubricant or anti-seize compound only when specified by the assembly procedure.