Value Collection MP39461 Hex Head Cap Screw 5/8-18x6 Gr8

Product Description

The VALUE COLLECTION MP39461 is a partially threaded hex head cap screw manufactured from Grade 8 steel with a zinc yellow dichromate finish. It measures 5/8-18 thread size with a 6-inch length under head, conforming to ASME B18.2.1 dimensional standards. Grade 8 steel delivers high tensile strength suitable for heavy-duty fastening applications. The zinc yellow dichromate coating provides corrosion resistance in exposed or mildly harsh environments. This fastener is installed by mechanics, millwrights, and general contractors wherever a high-strength inch-series hex cap screw is required.

This screw is suited for structural assemblies, machinery mounting, equipment frames, and industrial fabrication work where high-strength fasteners are specified. The UNF thread form provides fine-thread engagement, which is commonly preferred in applications requiring tighter torque control or where vibration resistance is a factor. The partial thread length allows for a smooth shank section beneath the head, typical for through-bolt and clamping applications.

Key Features

• Grade 8 steel construction for high tensile and proof load strength
• Zinc yellow dichromate finish for corrosion resistance
• 5/8-18 UNF thread - fine thread series for precise engagement
• 6-inch length under head with partial threading
• Conforms to ASME B18.2.1 dimensional standard
• Inch system of measurement

Compatibility

Designed as a standard inch-series hex head cap screw for use in any application specifying a 5/8-18 UNF Grade 8 fastener per ASME B18.2.1.

Installation Notes

Installation should be performed by qualified mechanics or tradespeople using appropriate torque equipment calibrated for Grade 8 fastener specifications. Always verify that the mating nut or tapped hole uses the matching 5/8-18 UNF thread form before assembly. Apply thread lubricant or anti-seize only if specified by the equipment manufacturer, as lubrication affects torque-tension relationships. Follow all applicable fastener standards and equipment service documentation when determining final torque values.