Value Collection -33629-4 Hex Socket Cap Screw 10 Pack

Product Description

The VALUE COLLECTION -33629-4 is a hex socket cap screw designed for secure fastening in mechanical, industrial, and structural assemblies. Threaded 5/16-18 UNC and measuring 5-1/2 inches in length under the head, this fastener is partially threaded and accepts a 1/4 inch hex drive. Manufactured from alloy steel with a black oxide finish coating, it delivers solid tensile strength and corrosion resistance suitable for demanding service environments. Each package contains 10 screws. This fastener meets ASME/ANSI B18.3 and ASTM A574 standards, confirming dimensional accuracy and minimum proof-load requirements.

This screw is suited for a wide range of industrial, MRO, and OEM assembly applications where a recessed hex drive is preferred over an external hex head. The partially threaded shank provides a bearing surface for clamping without thread engagement through the full joint length, making it appropriate for through-bolt and tapped-hole configurations in machinery, equipment frames, and structural components. Installers working in manufacturing, maintenance, and mechanical contracting environments commonly use this fastener type.

Key Features

• 5/16-18 UNC thread size for compatibility with standard unified coarse-thread tapped holes
• 5-1/2 inches length under head for deep-reach fastening applications
• Partially threaded shank provides a clean bearing surface for clamped joints
• 1/4 inch hex socket drive for torque application with standard Allen keys or hex bits
• Alloy steel construction with black oxide coating for strength and corrosion resistance
• Meets ASME/ANSI B18.3 and ASTM A574 standards for dimensional and mechanical conformance

Compatibility

Designed as a standard 5/16-18 UNC hex socket cap screw for use in any tapped hole or application conforming to ASME/ANSI B18.3 dimensional requirements.

Installation Notes

Installation should be performed using a correctly sized 1/4 inch hex key or socket bit to avoid cam-out and drive damage. Verify that the mating tapped hole thread specification matches 5/16-18 UNC before installation. Apply thread lubricant or thread-locking compound as required by the application or applicable engineering specification. Follow all relevant ASME or OEM torque guidelines for the fastener grade and joint material.