Value Collection 592501BR Hex Socket Cap Screw 1-8 Unc

Product Description

The VALUE COLLECTION 592501BR is a hex socket cap screw designed for secure, high-torque fastening in mechanical assemblies, fabrication work, and structural applications. This fastener features a 1-8 UNC thread size, a 3.5-inch length under head, and a 3/4-inch hex drive, making it compatible with standard hex keys and Allen-style drivers. Constructed from 18-8 austenitic stainless steel (Grade A2), the screw delivers corrosion resistance suitable for wet, outdoor, or chemically exposed environments. It ships with a bright, uncoated finish and is partially threaded along the shank. Machinists, millwrights, and maintenance technicians are the typical installers for this fastener type.

This screw is appropriate for use in a wide range of industrial, commercial, and mechanical applications where a recessed hex drive is required for flush or countersunk installation. Partial threading provides clamping strength between joined components without over-engagement into the base material. Common install scenarios include machine frames, equipment enclosures, pump housings, and structural steel connections. The 1-8 UNC coarse thread pitch provides strong pull-out resistance and threads easily into tapped holes in steel, aluminum, and plastic.

Key Features

• 1-8 UNC coarse thread for high pull-out resistance and fast engagement
• 3.5-inch length under head accommodates thicker material stackups
• 3/4-inch hex socket drive for use with standard Allen keys or hex bit drivers
• 18-8 austenitic stainless steel (Grade A2) resists corrosion in wet and outdoor environments
• Partially threaded shank for proper clamping of joined components
• Bright, uncoated finish with no added plating that could affect thread tolerances
• Meets ASME/ANSI B18.3 and ASTM F837 fastener standards

Compatibility

Designed as a standard 1-8 UNC hex socket cap screw suitable for tapped holes conforming to ASME/ANSI B18.3 and ASTM F837 specifications in industrial and mechanical assemblies.

Installation Notes

Installation is typically performed by machinists, millwrights, or maintenance technicians using a 3/4-inch hex key or Allen-style driver. Verify that the tapped hole thread class and depth are compatible with a 1-8 UNC partial-thread fastener before installation. Apply appropriate thread lubricant or anti-seize compound when installing stainless steel fasteners into stainless or aluminum threads to reduce the risk of galling. Follow applicable torque guidelines from ASME or the equipment manufacturer for the specific joint material and fastener grade.