Value Collection 581112PR Hex Socket Cap Screw 8-32 Unc

Product Description

The VALUE COLLECTION 581112PR is a hex socket cap screw designed for high-strength fastening applications in machinery, tooling, and structural assemblies. Threaded to the 8-32 UNC standard, this screw measures 3.5 inches under the head and accepts a 9/64-inch hex drive. It is partially threaded, which helps maintain clamping force across thick materials. Constructed from alloy steel with a black oxide finish, it resists surface corrosion and reduces light reflection in precision environments. Machinists, maintenance technicians, and fabricators install this style of cap screw where a flush or recessed fastener head is required.

This screw is suited for use in CNC machine components, fixture plates, tooling blocks, and general mechanical assemblies where an 8-32 UNC thread form is specified. The partial threading and alloy steel construction make it appropriate for both metal-to-metal and tapped-hole applications requiring controlled clamp load. It conforms to ASME/ANSI B18.3 and ASTM A574, making it appropriate for applications where fastener grade and dimensional standards are required by design or specification.

Key Features

• 8-32 UNC thread form for standard unified coarse thread compatibility
• 3.5-inch length under head accommodates deeper assemblies and thick stock
• 9/64-inch hex socket drive for use with standard Allen keys or hex bit drivers
• Partially threaded shank maintains alignment and clamping in clearance-hole applications
• Alloy steel construction provides high tensile and shear strength
• Black oxide finish offers mild corrosion resistance and a low-reflectance appearance

Compatibility

Designed as a standard ASME/ANSI B18.3 and ASTM A574 compliant hex socket cap screw for use in any tapped hole or threaded insert conforming to the 8-32 UNC thread specification.

Installation Notes

This fastener is installed by machinists or maintenance technicians using a 9/64-inch hex key or socket driver. Ensure the receiving tapped hole is clean and free of debris before installation. Apply thread lubricant or thread-locking compound as required by the assembly specification. Do not exceed the rated torque for the 8-32 alloy steel grade as defined by the applicable engineering or equipment documentation.