Holo-krome 60098 Flat Socket Cap Screw 3/8-16 X 3/4 in

Product Description

The HOLO-KROME 60098 is a flat socket cap screw designed for applications requiring a flush or countersunk fastener profile. Manufactured from alloy steel with a black oxide finish, this screw features a 3/8-16 UNC thread, a 3/4-inch overall length, and a fully threaded shank. The 82-degree flat head seats flush in standard countersunk holes, and the 7/32-inch hex socket drive accepts a standard hex key. Hardness is rated at 39 to 44 HRC, meeting ASME B18.3 and ASTM F835 standards. Thread fit is Class 3A, providing a controlled tolerance suitable for precision assemblies. This fastener is installed by machinists, millwrights, maintenance technicians, and mechanical contractors.

This flat socket cap screw is suited for machine frames, fixtures, tooling plates, and equipment panels where a recessed head is required to maintain a flat surface or clear adjacent components. The black oxide finish provides mild corrosion resistance and reduces light reflection, making it common in industrial machinery, jigs and fixtures, and fabrication applications. The alloy steel construction supports high clamping loads in moderate-temperature environments. This is a sold-per-piece item with a minimum order quantity of 100 pieces.

Key Features

• 82-degree flat head seats flush in standard countersunk holes
• 7/32-inch hex socket drive for standard hex key installation
• Fully threaded shank, 3/8-16 UNC, 3/4-inch overall length
• Alloy steel construction rated 39 to 44 HRC for high-load applications
• Black oxide finish for mild corrosion resistance and reduced reflectivity
• Meets ASME B18.3 and ASTM F835 fastener standards

Compatibility

Designed as an OEM-style and general-purpose replacement flat socket cap screw for any application requiring a 3/8-16 UNC, 3/4-inch fully threaded countersunk fastener conforming to ASME B18.3.

Installation Notes

Installation is performed with a 7/32-inch hex key or hex bit driver. Countersink the receiving hole to 82 degrees to ensure proper head seating and flush surface results. De-energize and lock out any equipment before fastener replacement or assembly work on machinery. Follow applicable torque specifications from the equipment manufacturer or applicable mechanical standards for 3/8-16 alloy steel fasteners.