L H Dottie Co MB123 Hex Head Tap Bolt 1/2-13 X 3

Product Description

The L H Dottie Co MB123 is a hex head tap bolt with a 1/2-13 thread size and a 3-inch length. Tap bolts are fully threaded fasteners designed to thread directly into a tapped hole without the use of a nut. This style is widely used in mechanical, electrical, and structural assembly applications where a flush or recessed fastener point is needed. The hex head allows for standard socket or wrench installation. This fastener is sold individually and is a common hardware accessory in trade and construction work.

This tap bolt is suited for general hardware and accessory applications across commercial and residential construction, mechanical assembly, and equipment mounting. Electricians, HVAC technicians, plumbers, and general contractors use hex head tap bolts when securing panels, brackets, or equipment frames to surfaces with pre-tapped holes. The 1/2-13 thread designation indicates a 1/2-inch nominal diameter with 13 threads per inch, consistent with the Unified National Coarse thread standard.

Key Features

• Fully threaded hex head tap bolt for direct engagement with tapped holes
• 1/2-13 thread size — 1/2-inch diameter, 13 threads per inch (UNC)
• 3-inch length provides adequate grip for medium-depth fastening applications
• Hex head drive compatible with standard sockets and open-end wrenches
• Sold individually (unit of measure: each)

Compatibility

Designed as a general-purpose hex head tap bolt suitable for use in any application requiring a 1/2-13 UNC fully threaded fastener.

Installation Notes

Installation is typically performed by qualified tradespeople during mechanical or structural assembly. Ensure the receiving hole is properly tapped to 1/2-13 UNC specification before installing. Use the appropriately sized socket or open-end wrench and apply consistent torque according to the relevant project or equipment specifications. Inspect threads on both the bolt and receiving hole for damage before installation.