Value Collection D39107 Hex Head Cap Screw 1/2-13 X 1-3/4 in

Product Description

The VALUE COLLECTION D39107 is a fully threaded hex head cap screw designed for high-strength fastening applications in industrial, mechanical, and structural assemblies. Sized at 1/2-13 thread with a 1-3/4 inch length under head, it is manufactured from Grade 8 steel and finished with a zinc yellow dichromate coating that provides corrosion resistance. The UNC thread form and full threading along the shank make it suitable for through-bolt and fully engaged nut applications. It conforms to ASME B18.2.1 and SAE J429 standards, making it appropriate wherever a traceable, specification-grade fastener is required.

This screw is commonly used in heavy equipment assembly, machinery mounting, structural steel connections, and automotive or powertrain applications where Grade 8 tensile strength is specified. The 1/2-13 UNC thread is one of the most widely used coarse-thread sizes in inch-based mechanical systems. Maintenance technicians, millwrights, mechanics, and fabricators regularly specify Grade 8 fasteners at this size for applications involving vibration, shear loads, or elevated clamping-force requirements. Minimum order quantity is 25 pieces per order.

Key Features

• Grade 8 steel construction meets SAE J429 mechanical property requirements for high-strength fastener service
• Zinc yellow dichromate finish provides corrosion resistance and is visually identifiable as a Grade 8 fastener
• Fully threaded shank allows maximum thread engagement across the full 1-3/4 inch length under head
• 1/2-13 UNC thread conforms to ASME B18.2.1 dimensional standards
• Inch measurement system for compatibility with standard SAE tooling and hardware

Compatibility

Designed as a specification-grade replacement or stock fastener for any inch-system assembly requiring a 1/2-13 UNC fully threaded hex head cap screw in Grade 8 steel.

Installation Notes

Installation is performed by mechanics, millwrights, or maintenance technicians using standard 3/4 inch hex drive tooling appropriate for a 1/2-13 fastener. Always verify mating thread condition and ensure the receiving nut or tapped hole is clean and undamaged before assembly. Torque to the value specified in the applicable engineering drawing or equipment service manual for Grade 8 fasteners at this diameter. Do not substitute a lower-grade fastener in applications where Grade 8 is specified by the original design.