Holo-krome 720000390 Hex Socket Cap Screw 6-32 Unc

Product Description

The HOLO-KROME 720000390 is a hex socket cap screw designed for precision fastening applications where a low-profile, high-strength connection is required. Sized at 6-32 UNC with a 5/16-inch length under head, this screw is fully threaded and driven by a 7/64-inch hex key. Manufactured from alloy steel with a black oxide coating, it delivers corrosion resistance and a clean finish suitable for machine assembly, equipment mounting, and component fabrication. It meets ASME B18.3 and ASTM A574 standards, confirming dimensional and mechanical compliance for critical assemblies.

This fastener is used in light industrial and mechanical assembly work where a socket drive is preferred over an external hex or slotted head. The 6-32 UNC thread is a standard coarse machine-thread size commonly found in electronic enclosures, instrument panels, small mechanical assemblies, and precision equipment. Machinists, millwrights, and equipment technicians regularly specify this size for panel mounting and internal component attachment. The black oxide finish makes it suitable for applications requiring a low-reflectance appearance or mild corrosion protection in controlled environments.

Key Features

• 6-32 UNC fully threaded alloy steel socket cap screw
• 5/16-inch length under head for shallow to medium panel stock
• 7/64-inch hex drive for compact, torque-efficient installation
• Black oxide coating for mild corrosion resistance and low-glare finish
• Meets ASME B18.3 and ASTM A574 dimensional and strength standards

Compatibility

Designed as an OEM-style replacement or standard-stock fastener for any application requiring a 6-32 UNC hex socket cap screw per ASME B18.3 specifications.

Installation Notes

Install with a calibrated 7/64-inch hex key or Allen driver. Ensure mating threads are clean and free of debris before driving. Do not over-torque alloy socket cap screws in thin or soft parent materials. Follow applicable machine assembly standards and equipment manufacturer torque guidelines when specified.