Value Collection 581565PR Hex Socket Cap Screw 1/2-13 Unc

Product Description

The VALUE COLLECTION 581565PR is a hex socket cap screw designed for high-strength bolted connections in industrial, mechanical, and structural applications. Manufactured from alloy steel with a black oxide finish, this fastener measures 11 inches in length under the head and accepts a 3/8-inch hex drive. The 1/2-13 UNC thread form is a coarse-thread standard widely used in general mechanical assembly. The partial threading leaves a smooth shank section that helps resist shear loads in fitted joints. Installers working in maintenance, fabrication, or machine assembly will find this a direct-fit choice for applications requiring a recessed-drive, high-torque fastener.

This screw is suited for heavy-duty bolted assemblies in manufacturing equipment, structural fixtures, and machine frames where a coarse-thread 1/2-inch fastener with an extended 11-inch grip length is specified. The black oxide coating provides mild corrosion resistance and reduces galling during installation. The 3/8-inch internal hex drive allows use of standard hex keys and socket drive tools. This size is common in industrial maintenance and OEM equipment assembly environments.

Key Features

• 1/2-13 UNC coarse-thread specification for broad tooling and hardware compatibility
• 11-inch length under head accommodates deep-reach and through-bolt applications
• Alloy steel construction provides high tensile and shear strength
• Black oxide finish offers mild corrosion resistance and reduces light surface oxidation
• Partially threaded shank resists shear forces in close-tolerance assemblies
• Meets ASME/ANSI B18.3 and ASTM A574 fastener standards

Compatibility

Designed as a standard 1/2-13 UNC hex socket cap screw suitable for use in any application requiring an ASME/ANSI B18.3 or ASTM A574 compliant fastener of this thread size and length.

Installation Notes

Installation should be performed by a qualified mechanic or millwright using a calibrated torque wrench and a correctly sized 3/8-inch hex key or socket bit. Clean and inspect threaded holes before installation to ensure proper thread engagement. Apply thread lubricant or anti-seize compound only if specified by the equipment manufacturer, as this affects torque values. Do not exceed the rated torque for alloy steel fasteners of this grade and size.