Value Collection -33642-1 Hex Socket Cap Screw 3/8-16

Product Description

The VALUE COLLECTION -33642-1 is a partially threaded hex socket cap screw designed for use in bolted assemblies requiring a recessed drive fastener. The screw features a 3/8-16 UNC thread size and a 3-1/4 inch length under head. Drive interface is a 5/16 inch internal hex socket. Manufactured from alloy steel with a black oxide finish, this screw meets ASME/ANSI B18.3 and ASTM A574 standards. It is suited for mechanical, industrial, and structural applications where a flush or recessed cap screw is required. Installation requires a 5/16 inch hex key or socket driver.

This cap screw is used in machinery assembly, equipment fabrication, and structural fastening applications. The partial thread engagement allows for precise clamping force in through-bolt and tapped-hole configurations. The black oxide coating provides mild corrosion resistance and reduces light reflection. This fastener is appropriate for both shop and field assembly work performed by millwrights, machinists, pipefitters, and general maintenance technicians.

Key Features

• 3/8-16 UNC thread size for standard coarse-thread tapped holes
• 3-1/4 inch length under head for extended grip range
• Partially threaded shank for controlled clamping in through-bolt applications
• 5/16 inch internal hex drive for use with standard hex keys or Allen drivers
• Alloy steel construction meets ASTM A574 mechanical requirements
• Black oxide finish for mild corrosion resistance and low-glare appearance

Compatibility

Designed as a standard ASME/ANSI B18.3 hex socket cap screw suitable for any 3/8-16 UNC tapped hole requiring a partially threaded alloy steel fastener with an internal hex drive.

Installation Notes

Installation is performed with a 5/16 inch hex key or Allen driver. Ensure the tapped hole is clean and free of debris before threading the screw. Apply appropriate thread lubricant or threadlocker per the assembly specification. Do not exceed the rated torque for 3/8-16 alloy steel fasteners as specified by the equipment manufacturer or applicable engineering standard.