Holo-krome 78006 Hex Socket Cap Screw 2-56 Unc 3/8 in Ss

Product Description

The HOLO-KROME 78006 is a hex socket cap screw sized at 2-56 UNC with a 3/8-inch length under head. It is driven with a 5/64-inch hex key and is manufactured from 18-8 stainless steel with a bright, uncoated finish. This fully threaded fastener is built to ASME B18.3 and ASTM F837 standards, making it suitable for precision assemblies where corrosion resistance and consistent thread engagement are required. Machinists, maintenance technicians, and assembly professionals use this screw in applications where a compact, high-strength socket head fastener is needed in tight clearance conditions.

This screw is appropriate for light-duty mechanical assemblies, instrumentation enclosures, panel mounting, and similar applications requiring a small-diameter machine screw with reliable torque transfer through an internal hex drive. The 2-56 UNC thread designation places it in the fine-pitch, small-screw category commonly found in electronic hardware, HVAC control panels, and precision equipment. The 18-8 stainless steel construction provides good resistance to oxidation and mild chemical exposure without additional coating.

Key Features

• Thread size 2-56 UNC, fully threaded along the 3/8-inch length under head
• 5/64-inch hex socket drive for use with standard hex keys or ball-end drivers
• 18-8 stainless steel construction with bright, uncoated finish for corrosion resistance
• Meets ASME B18.3 and ASTM F837 fastener standards
• Compact socket cap head design suits tight-clearance installations

Compatibility

Designed as a standard 2-56 UNC hex socket cap screw for use in any application requiring this thread size and length, including instrumentation, panel assemblies, and light mechanical equipment.

Installation Notes

Installation requires a 5/64-inch hex key or Allen driver; use a calibrated torque driver when the assembly specification requires controlled fastening force. Ensure mating tapped holes are clean and free of debris before driving. Stainless steel fasteners are susceptible to galling at high installation speeds — drive slowly and consider a compatible anti-seize compound for threaded steel or aluminum mating parts where repeated removal is expected.