Value Collection 581487PR Hex Socket Cap Screw 3/8-16 Unc

Product Description

The VALUE COLLECTION 581487PR is a hex socket cap screw sized at 3/8-16 UNC with a 9-inch length under head and a 5/16-inch hex drive. Manufactured from alloy steel and finished with a black oxide coating, this fastener delivers solid tensile strength and moderate corrosion resistance in a compact, low-profile head form. It is partially threaded, following ASME/ANSI B18.3 and ASTM A574 standards. Machinists, millwrights, maintenance technicians, and mechanical contractors reach for socket cap screws when torque requirements are high and clearance for a wrench is limited.

This screw is well-suited for machine assembly, fixture building, jig fabrication, and general industrial maintenance where a flush or recessed fastener head is required. The 3/8-16 UNC coarse thread pattern seats quickly and holds reliably in steel and iron tapped holes. The 9-inch length under head covers deep-reach applications where standard shorter fasteners fall short. The black oxide finish provides mild oil-retention properties that can extend service life in indoor or light-duty environments.

Key Features

• 3/8-16 UNC coarse thread for fast engagement in steel and iron tapped bores
• 9-inch length under head for deep-reach clamping applications
• 5/16-inch hex socket drive for use with standard Allen keys or hex bit drivers
• Partially threaded shank provides a shoulder bearing surface under load
• Alloy steel construction meets ASTM A574 mechanical requirements
• Black oxide coating offers mild corrosion resistance and reduces light glare in equipment

Compatibility

Designed as a standard ASME/ANSI B18.3 hex socket cap screw compatible with any 3/8-16 UNC tapped hole requiring a 5/16-inch hex drive fastener.

Installation Notes

Install and remove with a 5/16-inch hex key or hex socket bit rated for the expected torque load. De-energize and lock out any equipment before servicing fastened assemblies. Inspect tapped holes for thread damage or contamination before installation. Apply thread lubricant or anti-seize compound as appropriate for the service environment to prevent galling and aid future removal.