Import BDNA-20763 Straight Flute Tap 3/4-16 Unf Hss

Product Description

The IMPORT BDNA-20763 is a straight flute plug tap designed for cutting 3/4-16 UNF internal threads in a variety of workpiece materials. Built from high-speed steel with a gold oxide coating, this tap offers improved lubricity and resistance to wear during threading operations. The plug chamfer on the lead threads distributes cutting load gradually, making it well suited for through-hole applications. With 4 flutes and a right-hand thread direction, the BDNA-20763 follows standard tapping geometry for conventional threading setups. Overall length is 4.25 inches, and the thread limit is H3, indicating a Class 3 tolerance fit. Machinists, tool and die makers, and maintenance technicians are the primary users.

This tap is used in machine shops, maintenance and repair operations, and production environments where 3/4-16 UNF threaded holes are required. The straight flute design works best in short-chipping materials such as cast iron, brass, and some aluminum alloys. The plug chamfer allows the tap to start in a drilled through-hole and follow through cleanly with moderate starting torque. It can be run in a drill press, CNC machining center, or manual tapping stand when proper alignment is maintained.

Key Features

• 3/4-16 UNF thread form with right-hand direction
• Plug chamfer for through-hole tapping with gradual cutting load entry
• 4 straight flutes for efficient chip clearance in short-chipping materials
• High-speed steel construction for durability across a range of workpiece materials
• Gold oxide coating improves lubricity and helps extend tool life
• H3 thread limit for Class 3 tolerance fits

Compatibility

Designed as a standard replacement or general-use tap for any application requiring 3/4-16 UNF internal threads. Suitable for use with standard tap wrenches, tapping heads, and CNC rigid tapping setups configured for the 3/4-16 thread size.

Installation Notes

Always ensure the tap is properly aligned with the drilled hole before applying torque to prevent tap breakage. Use an appropriate cutting fluid for the workpiece material to reduce heat and extend tap life. Secure the workpiece and power down or de-energize any machine spindle before manually handling or changing the tap. Follow shop safety practices and applicable OSHA standards when operating tapping equipment.