Value Collection 011279P Hex Socket Cap Screw 3/8-16 Unc

Product Description

The VALUE COLLECTION 011279P is a hex socket cap screw designed for fastening applications that require a compact, recessed drive head and high clamping strength. This screw features a 3/8-16 UNC thread size, a 4-1/2 inch length under head, and a 5/16 inch hex drive. Constructed from alloy steel with a black oxide finish, it delivers corrosion resistance and strength suited to industrial and mechanical assembly work. Partial threading along the shank provides positive clamping force between mating surfaces. This fastener meets ASME/ANSI B18.3 and ASTM A574 standards.

This cap screw is used in general mechanical assembly, machine building, tooling fixtures, and structural fastening where a flush or low-profile socket head is required. The 3/8-16 UNC coarse thread pattern is widely compatible with standard tapped holes in steel, aluminum, and cast components. It is commonly installed by millwrights, maintenance mechanics, and industrial assembly technicians in both shop and field environments.

Key Features

• 3/8-16 UNC coarse thread for broad compatibility with standard tapped holes
• 4-1/2 inch length under head for deep-reach fastening applications
• 5/16 inch hex socket drive for use with standard hex keys and socket drivers
• Alloy steel construction for high tensile strength and durability
• Black oxide finish provides mild corrosion resistance and reduces light reflection
• Partially threaded shank improves clamping force between joined components
• Meets ASME/ANSI B18.3 and ASTM A574 fastener standards

Compatibility

Designed as an OEM-style replacement or standard-service fastener for any application requiring a 3/8-16 UNC hex socket cap screw with a 4-1/2 inch length under head and partial threading.

Installation Notes

Installation is performed using a 5/16 inch hex key or socket driver. Ensure the mating tapped hole is clean, properly sized, and free of debris before threading. Apply thread lubricant or thread-locking compound as required by the application specification. Follow applicable torque guidelines from the equipment manufacturer or relevant ASME standards for the fastener grade.