Holo-krome 72430 Hex Socket Cap Screw 1-1/2-6 Unc Alloy Steel

Product Description

The HOLO-KROME 72430 is a heavy-duty hex socket cap screw engineered for high-strength fastening applications in industrial and mechanical assemblies. It features a 1-1/2-6 UNC thread profile and a 4-inch length under the head, with full threading along the entire shank. The screw is manufactured from alloy steel and finished with a black oxide coating to provide moderate corrosion resistance and a uniform dark appearance. Drive is a 1-inch internal hex socket. Torque is applied with a standard hex key or Allen driver. Installers in manufacturing, heavy equipment maintenance, and industrial construction commonly use this fastener where high tensile strength is required.

This screw is suited for structural and mechanical fastening in heavy industrial, OEM machinery, and maintenance-repair-operations (MRO) environments. Fully threaded construction makes it appropriate for through-hole and tapped-hole applications where thread engagement along the full fastener length is required. The coarse 6 TPI pitch aids in fast assembly and provides reliable clamp load in steel and iron assemblies. Trades and technicians working in fabrication, rigging, and industrial equipment service are the primary installers of this fastener.

Key Features

• 1-1/2-6 UNC coarse thread for reliable engagement in steel and iron tapped holes
• Fully threaded shank for maximum thread engagement in through-hole applications
• Alloy steel construction provides high tensile and shear strength
• Black oxide finish offers mild corrosion resistance and reduced light reflection
• 1-inch internal hex drive for high-torque application with standard hex key tooling
• Meets ASME B18.3 and ASTM A574 fastener standards

Compatibility

Designed as a standard hex socket cap screw per ASME B18.3 and ASTM A574, suitable for use in any tapped or through-hole application requiring a 1-1/2-6 UNC thread and 4-inch under-head length in alloy steel construction.

Installation Notes

Installation requires a 1-inch hex key or socket driver rated for the applicable torque load. Always verify that the mating tapped hole or nut meets the same thread specification (1-1/2-6 UNC) before assembly. Follow applicable industry or OEM torque specifications for ASTM A574 alloy steel cap screws of this diameter. Ensure mating surfaces are clean and free of debris before tightening to achieve proper clamp load.