Value Collection 872275PR Hex Socket Cap Screw 3/8-16 Unc

Product Description

The VALUE COLLECTION 872275PR is a hex socket cap screw designed for secure, high-torque fastening in mechanical assemblies and structural applications. With a 3/8-16 UNC thread size and a 3.5-inch length under head, this screw is partially threaded to allow clamping force at the bearing surface. The 5/16-inch hex drive accepts standard hex keys and Allen wrenches. Constructed from alloy steel with a zinc-plated finish, the 872275PR offers solid mechanical strength with basic corrosion resistance. It meets ASME B18.8 and ASTM A574 fastener standards, making it appropriate for general-purpose industrial and mechanical use.

This screw is suited for use in machinery assembly, equipment mounting, and structural fastening where a recessed hex drive is preferred over an external bolt head. The partial threading engages the threaded member while leaving a smooth shank section for load-bearing contact in clearance holes. It is commonly installed by machinists, millwrights, maintenance technicians, and mechanical contractors working on production equipment, fixtures, and fabricated structures.

Key Features

• 3/8-16 UNC thread size for wide compatibility with standard inch-series tapped holes
• 3.5-inch length under head accommodates thicker material stacks
• Partially threaded shank provides positive clamping at the bearing surface
• 5/16-inch hex socket drive allows high torque input with a standard Allen key
• Alloy steel construction meets ASTM A574 mechanical requirements
• Zinc-plated finish provides basic protection against oxidation in dry or mildly humid environments

Compatibility

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

Installation Notes

Installation should be performed by qualified mechanical or maintenance technicians following applicable machine guarding and lockout/tagout procedures before fastener service. Use a calibrated torque wrench with the appropriate 5/16-inch hex bit to achieve consistent clamp load without over-torquing. Ensure tapped holes are clean and free of debris before driving. Zinc plating is not rated for immersion or high-moisture environments without additional protection.