Holo-krome 60168 Flat Socket Cap Screw 3/4-10 X 3 in

Product Description

The HOLO-KROME 60168 is a flat socket cap screw designed for applications requiring a low-profile, flush-mount fastener. It features an 82-degree flat head driven by a 1/2-inch hex socket and is fully threaded at a 3/4-10 UNC thread size over an overall length of 3 inches. The alloy steel construction is finished in black oxide for moderate corrosion resistance and reduced light reflection. Hardness is rated at 37 to 44 HRC, making this screw suitable for high-strength clamping applications. Installation is handled by mechanical tradespeople and maintenance technicians working on machinery, tooling fixtures, and structural assemblies.

This screw is used in industrial maintenance, machine building, and fabrication environments where a countersunk fastener is needed to sit flush or below a surface. The fully threaded shank allows full thread engagement across the entire fastener length, which is particularly useful in thinner materials or blind holes where maximum thread contact is required. Thread fit class 3A ensures close tolerance engagement appropriate for precision assemblies.

Key Features

• 82-degree flat head profile for flush or countersunk installation
• 1/2-inch hex socket drive for high torque input with standard Allen wrenches
• Fully threaded 3/4-10 UNC shank over 3-inch overall length
• Alloy steel construction hardened to 37 to 44 HRC for high-strength service
• Black oxide finish for moderate corrosion resistance and low reflectivity
• Thread fit class 3A per ASME B18.3 and ASTM F835 standards

Compatibility

Designed as a standard inch-series flat socket cap screw per ASME B18.3 and ASTM F835, compatible with 3/4-10 UNC tapped holes requiring a countersunk 82-degree seating angle.

Installation Notes

Install using a calibrated 1/2-inch hex key or Allen driver appropriate for the torque requirements of the application. De-energize and lock out any machinery before fastener service per applicable OSHA lockout/tagout procedures. Do not substitute this screw in applications requiring a different thread fit class or head angle without verifying seating geometry against the mating countersink. Consult applicable mechanical codes or engineering specifications for torque requirements specific to the assembly.