Holo-krome 78116 Hex Socket Cap Screw 1/2-13 Unc

Product Description

The HOLO-KROME 78116 is a hex socket cap screw designed for high-strength fastening applications where a clean, low-profile head is required. It features a 1/2-13 UNC thread and measures 1.5 inches in length under the head. The drive is a 3/8 inch internal hex socket, requiring an Allen key or hex bit driver for installation. Constructed from 18-8 stainless steel with a bright, uncoated finish, this screw offers solid corrosion resistance for both indoor and outdoor environments. It is fully threaded along its entire shank length and conforms to ASME B18.3 and ASTM F837 standards. Installers in mechanical, plumbing, HVAC, and general fabrication trades will find this fastener suitable for a wide range of structural and equipment assembly tasks.

This screw is appropriate for use in residential and commercial applications where a recessed hex drive head is preferred over a standard hex head or Phillips drive. Typical installation scenarios include equipment panel mounting, pump and motor assembly, pipe flange fastening, and structural bracket attachment. The 1/2-13 UNC coarse thread provides strong clamping force and is well-suited for use in standard tapped steel, aluminum, or stainless steel receiving materials. The uncoated stainless finish makes it suitable for use in moist or corrosive environments without requiring additional protective treatment.

Key Features

• 1/2-13 UNC coarse thread for reliable engagement in standard tapped holes
• 1.5 inch length under head suits medium-depth fastening applications
• 3/8 inch internal hex socket drive for use with Allen keys or hex bit tools
• Fully threaded shank maximizes thread engagement across the full grip length
• 18-8 stainless steel construction provides corrosion resistance without coating
• Meets ASME B18.3 and ASTM F837 standards for dimensional and mechanical conformance

Compatibility

Designed as an OEM-style replacement or direct-fit fastener for equipment and assemblies requiring a 1/2-13 UNC hex socket cap screw with a 1.5 inch length under head in 18-8 stainless steel.

Installation Notes

Installation requires a 3/8 inch hex key or hex bit driver rated for the applied torque. Ensure the receiving hole is properly tapped to 1/2-13 UNC before installation. Power down or depressurize any equipment before replacing fasteners on live systems. Avoid mixing stainless steel fasteners with dissimilar metals in submerged or highly conductive environments to minimize galvanic corrosion risk.