Holo-krome 86576 Hex Socket Cap Screw 1/4-20 Unc

Product Description

The HOLO-KROME 86576 is a partially threaded hex socket cap screw engineered for high-strength fastening applications. It features a 1/4-20 UNC thread size and a body length of 3.25 inches under the head, driven by a 3/16-inch hex socket. Constructed from alloy steel and finished with a black oxide coating, this fastener meets ASME B18.3 and ASTM A574 standards, making it suitable for demanding mechanical assemblies where strength and corrosion resistance are required. Licensed trades and industrial maintenance technicians rely on this type of fastener for precision installations where a low-profile cap head and internal-drive geometry are necessary.

This cap screw is appropriate for use in mechanical, HVAC equipment panels, electrical enclosures, pump housings, and other assemblies that require a high-tensile, internal-drive fastener. Its partially threaded shank provides accurate alignment and strong clamping in through-hole and tapped-hole applications. The black oxide finish offers mild corrosion resistance suitable for indoor and protected environments. This item is sold individually but requires a minimum order quantity of 10 units.

Key Features

• 1/4-20 UNC thread form for broad compatibility with standard tapped holes
• 3.25-inch length under head provides ample grip for thick material stacks
• Partially threaded shank improves alignment and shear strength
• Alloy steel construction meets ASTM A574 mechanical property requirements
• Black oxide finish reduces surface friction and provides mild corrosion protection
• Conforms to ASME B18.3 dimensional standards

Compatibility

Designed as an OEM-style replacement or standard-stock hex socket cap screw for any application requiring a 1/4-20 UNC partially threaded fastener with a 3/16-inch hex drive.

Installation Notes

Installation requires a 3/16-inch hex key or socket driver. Ensure the mating tapped hole is clean and free of debris before threading to avoid galling or cross-threading. Power down or de-energize any equipment before accessing fastened assemblies. Apply fastener torque per the applicable equipment service manual or relevant ASME fastener torque guidelines for the specific joint material.