Value Collection -33642-2 Hex Socket Cap Screw 3/8-16 Unc

Product Description

The VALUE COLLECTION -33642-2 is a hex socket cap screw designed for use in threaded fastening applications where a compact, recessed-drive fastener is required. It features a 3/8-16 UNC thread and measures 3-1/2 inches in length under the head. The 5/16-inch hex drive accepts a standard Allen key or hex bit driver. Partially threaded along the shank, this screw is manufactured from alloy steel with a black oxide finish that provides moderate corrosion resistance and a low-reflectance appearance. It conforms to ASME/ANSI B18.3 and ASTM A574 standards, making it appropriate for structural and mechanical assemblies. Minimum order quantity is 25 pieces.

This screw is suited for machine assembly, industrial equipment maintenance, tooling fixtures, and general mechanical fastening where a socket-head cap screw profile is specified. The partial threading allows for shouldered clamping in applications that benefit from an unthreaded shank bearing against mating surfaces. It is a standard choice for machinists, millwrights, maintenance mechanics, and fabricators working in commercial or industrial settings.

Key Features

• 3/8-16 UNC thread for compatibility with standard inch-series tapped holes
• 3-1/2 inches length under head with partial threading for shouldered clamping applications
• 5/16-inch hex socket drive accepts Allen keys and hex bit drivers
• Alloy steel construction meets ASTM A574 mechanical requirements
• Black oxide finish provides moderate corrosion resistance and low reflectance
• Conforms to ASME/ANSI B18.3 dimensional standards

Compatibility

Designed as a standard ASME/ANSI B18.3 hex socket cap screw for use in any application requiring a 3/8-16 UNC partially threaded socket-head fastener.

Installation Notes

Installation is performed using a 5/16-inch hex key or hex bit driver; ensure the drive tool is fully seated before applying torque to avoid rounding the socket. Verify that the mating tapped hole meets 3/8-16 UNC thread specifications and is clear of debris before fastening. Alloy steel fasteners with black oxide finish have limited outdoor corrosion resistance; additional anti-corrosion treatment may be appropriate in wet or exposed environments.