Value Collection 33659 Hex Socket Cap Screw 1/2-13 Unc 25 Pack

Product Description

The VALUE COLLECTION 33659 is a hex socket cap screw designed for high-strength fastening applications in industrial, mechanical, and structural assemblies. Manufactured from alloy steel with a black oxide finish, this fastener delivers corrosion resistance and a clean appearance suited to both exposed and concealed installations. The screw features a 1/2-13 UNC thread with a 3/8 inch hex drive socket and a 1/2 inch length under head. Full threading along the shank provides consistent clamping force across the entire grip length. Sold in a package of 25, this fastener meets ASME/ANSI B18.3 and ASTM A574 standards, making it appropriate for demanding load-bearing applications.

This cap screw is used in general-purpose mechanical assemblies, machine tool fixtures, equipment frames, and structural connections where a recessed hex drive is preferred over an external hex head. The black oxide coating makes it a common choice in applications where minimal light reflection or a finished appearance is required. Fully threaded construction suits thin-material connections and through-bolt configurations. Machinists, millwrights, maintenance technicians, and fabricators will find this screw applicable across a wide range of shop and field work.

Key Features

• 1/2-13 UNC thread for compatibility with standard unified coarse-thread tapped holes and nuts
• Fully threaded shank provides maximum thread engagement across the full 1/2 inch length under head
• Alloy steel construction meets ASTM A574 for high tensile and proof load strength
• Black oxide finish provides mild corrosion resistance and a low-reflectance appearance
• 3/8 inch hex socket drive accommodates standard Allen or hex key tooling
• Meets ASME/ANSI B18.3 dimensional standard for socket cap screws

Compatibility

Designed as a standard 1/2-13 UNC hex socket cap screw suitable for use in any application requiring a fastener conforming to ASME/ANSI B18.3 and ASTM A574 specifications.

Installation Notes

Installation is performed with a 3/8 inch hex key or Allen driver; ensure the driver is fully seated in the socket to avoid cam-out and socket damage. Verify that mating threads are clean, undamaged, and properly tapped to 1/2-13 UNC before installation. Apply appropriate thread lubricant or thread-locking compound per the assembly specification. Follow applicable torque guidelines from the fastener standard or equipment OEM documentation.