Value Collection 581569PR Hex Socket Cap Screw 1/2-13 Unc

Product Description

The VALUE COLLECTION 581569PR is a partially threaded hex socket cap screw designed for high-strength fastening in mechanical, structural, and industrial applications. It features a 1/2-13 UNC thread and a 14-inch length under head, making it suited for deep-reach clamping and through-bolt assemblies. The fastener is machined from alloy steel and finished with a black oxide coating that provides mild corrosion resistance and a clean surface for assembly. It is driven with a 3/8-inch hex key and meets ASME/ANSI B18.3 and ASTM A574 standards, confirming its suitability for demanding load-bearing installations.

This cap screw is used in manufacturing, maintenance, and fabrication environments where high tensile strength and precision threading are required. The 1/2-13 UNC coarse thread is common in general industrial and mechanical assembly, and the 14-inch under-head length accommodates thick material stacks or long-span clamping applications. Machinists, millwrights, and industrial maintenance technicians typically specify this fastener for equipment assembly and structural fixturing.

Key Features

• 1/2-13 UNC coarse thread for reliable engagement in standard tapped holes
• 14-inch length under head for deep-reach and thick-material installations
• Partially threaded shank provides a smooth bearing surface for shear-load applications
• Alloy steel construction meets ASTM A574 high-strength fastener requirements
• Black oxide finish offers mild corrosion resistance and reduced light reflection
• 3/8-inch hex drive for use with standard hex keys and socket drivers
• Conforms to ASME/ANSI B18.3 dimensional standards

Compatibility

Designed as a standard-dimension replacement or new-installation fastener for any application requiring a 1/2-13 UNC partially threaded hex socket cap screw conforming to ASME/ANSI B18.3 and ASTM A574.

Installation Notes

Installation should be performed by a qualified machinist, millwright, or maintenance technician using a calibrated torque wrench and the appropriate 3/8-inch hex key or socket driver. Always verify that the mating tapped hole thread form and depth are compatible with 1/2-13 UNC before installation. De-energize and lock out all equipment before fastening into assemblies on powered machinery. Do not exceed the recommended installation torque for the alloy steel grade and joint material being used.