Value Collection 581259PR Hex Socket Cap Screw 8-32 Unc

Product Description

The VALUE COLLECTION 581259PR is a hex socket cap screw designed for secure, high-torque fastening in mechanical assemblies and structural applications. Manufactured from alloy steel with a black oxide finish, this fastener offers increased hardness and corrosion resistance compared to standard carbon steel screws. It features an 8-32 UNC thread size with a 2.25 inch length under head and is partially threaded. The 9/64 inch hex drive socket head accepts a standard Allen key or hex bit driver for installation in tight clearance areas. This fastener meets ASME/ANSI B18.3 and ASTM A574 standards, confirming dimensional accuracy and mechanical performance.

This screw is suited for use in machine tool fixtures, industrial equipment, and precision assemblies where a low-profile socket head is required. The partial threading provides a smooth shank section useful for applications that require clamping or pivoting action between fastened components. It is commonly installed by machinists, millwrights, and maintenance technicians working on metal fabrication, OEM equipment assembly, and maintenance-repair-operations tasks across manufacturing and industrial environments.

Key Features

• 8-32 UNC thread size for standard machine screw applications
• 2.25 inch length under head with partial threading for clamping applications
• 9/64 inch hex socket drive for use with Allen keys or hex bit drivers
• Alloy steel construction meets ASTM A574 for high tensile strength
• Black oxide finish provides moderate corrosion resistance and reduces light reflection
• Conforms to ASME/ANSI B18.3 dimensional standards

Compatibility

Designed as a standard ASME/ANSI B18.3 hex socket cap screw for use in any application requiring an 8-32 UNC partially threaded fastener with a 9/64 inch hex drive.

Installation Notes

Installation requires a 9/64 inch hex key or Allen driver; ensure the driver is fully seated to avoid rounding the socket. De-energize and lock out equipment before servicing fastened assemblies per applicable OSHA lockout/tagout procedures. Inspect threads for damage before installation and do not force a misaligned fastener. Apply thread-locking compound or fastener lubricant as required by the assembly specification.