Value Collection 40265 Hex Socket Cap Screw 5/8-18 Unf

Product Description

The VALUE COLLECTION 40265 is a hex socket cap screw designed for high-strength fastening applications where a low-profile, internal-drive head is required. It features a 5/8-18 UNF thread form, which is a fine-thread pitch suited for applications demanding precise torque control and resistance to loosening under vibration. The screw measures 1 inch in length under the head and is fully threaded along that length. It is manufactured from alloy steel with a black oxide finish, providing a combination of tensile strength and moderate corrosion resistance. Machinists, millwrights, and maintenance technicians install these fasteners regularly in mechanical assemblies, fixtures, and equipment frames.

This cap screw is used wherever a recessed hex drive is preferred over an external hex head, such as in confined spaces or flush-mount applications. The 5/8-18 UNF fine thread is commonly found in precision mechanical assemblies, hydraulic components, and machine tool fixtures. The 1/2 inch hex drive size requires a standard 1/2 inch hex key or Allen-style driver. This screw is appropriate for both original equipment assembly and maintenance replacement work in industrial, commercial, and trade settings.

Key Features

• 5/8-18 UNF fine thread for precise engagement and vibration resistance
• Fully threaded 1 inch length under head maximizes thread engagement in shallow assemblies
• Alloy steel construction provides high tensile and shear strength
• Black oxide finish offers moderate corrosion resistance and reduces light reflection
• 1/2 inch hex socket drive for use with standard hex keys or Allen drivers
• Meets ASME/ANSI B18.3 and ASTM A574 fastener standards

Compatibility

Designed as a standard hex socket cap screw conforming to ASME/ANSI B18.3 and ASTM A574, suitable for use in any mechanical assembly or fixture requiring a 5/8-18 UNF fully threaded socket head cap screw.

Installation Notes

Installation is performed by machinists, millwrights, or maintenance technicians using a 1/2 inch hex key or Allen-style driver. Ensure mating threads are clean and free of debris before installation. Power down or de-energize any associated equipment before fastener replacement work begins. Do not exceed the rated torque range for the material being clamped, and verify thread engagement depth meets the requirements of the assembly design.