Holo-krome 730001480 Hex Socket Cap Screw 5/16-24 Unf

Product Description

The HOLO-KROME 730001480 is a partially threaded hex socket cap screw designed for precision fastening in mechanical and structural assemblies. It features a 5/16-24 UNF thread size and measures 3.5 inches in length under the head. The 1/4 inch hex drive socket accepts a standard hex key or Allen driver. Constructed from alloy steel with a black oxide finish coating, this fastener delivers high tensile strength and moderate corrosion resistance in controlled environments. It meets ASME B18.3 and ASTM A574 standards, making it a recognized specification-grade fastener suited for demanding industrial and mechanical applications.

This cap screw is used in applications where high clamping force and a recessed drive head are required. Common installation scenarios include machinery assembly, fixture building, tooling plates, and equipment maintenance work in industrial, commercial, and trade settings. The fine 24-thread-per-inch pitch provides precise torque control and strong resistance to loosening under vibration. Licensed mechanics, millwrights, and industrial maintenance technicians regularly use this fastener type when working to specification-controlled assembly requirements.

Key Features

• 5/16-24 UNF fine thread for precision clamping and vibration resistance
• 3.5 inches length under head with partial threading for controlled engagement depth
• 1/4 inch hex drive socket compatible with standard hex keys and Allen drivers
• Alloy steel construction meets ASTM A574 high-strength socket screw requirements
• Black oxide finish coating provides surface protection and reduces light reflection
• Conforms to ASME B18.3 dimensional standards for socket cap screws

Compatibility

Designed as a specification-grade replacement or service fastener for mechanical assemblies requiring a 5/16-24 UNF partially threaded hex socket cap screw per ASME B18.3 and ASTM A574.

Installation Notes

Installation is typically performed by qualified mechanics or maintenance technicians using a calibrated hex key or torque wrench with a 1/4 inch hex bit. De-energize and lock out all equipment before disassembling fastened assemblies per applicable OSHA lockout/tagout procedures. Do not substitute this fine-thread fastener in applications requiring coarse-thread UNC hardware, as thread engagement and load ratings differ. Inspect mating threaded holes for damage or debris before installation.