Import BDNA-20769 Straight Flute Tap 8-36 Unf Hss

Product Description

The IMPORT BDNA-20769 is a straight flute tap designed to cut 8-36 UNF internal threads in ferrous and non-ferrous materials. Built from high-speed steel with a gold oxide coating, this tap offers improved lubricity and wear resistance compared to uncoated HSS. The taper chamfer style distributes cutting load gradually across the leading threads, making it well suited for through-hole applications where the tap can advance fully. With 4 flutes and a right-hand thread direction, it produces clean, accurate H2 tolerance threads at 36 threads per inch. Machinists and maintenance technicians reach for this tap for precision threading tasks in production and repair environments.

This tap is intended for threading 8-36 UNF holes in a wide range of materials including mild steel, aluminum, brass, and plastics. The taper chamfer entry makes it a standard choice for through holes rather than blind holes. It is commonly used in machine shops, assembly lines, and field repair settings where UNF fine-thread fasteners are specified. The compact size suits small-diameter work typical of instrument, automotive, and light mechanical assemblies.

Key Features

• 8-36 UNF thread size with 36 threads per inch for fine-pitch applications
• High-speed steel construction provides durability across a range of workpiece materials
• Gold oxide coating reduces friction and improves chip flow during cutting
• Taper chamfer distributes cutting load over multiple leading threads for smooth entry
• 4-flute design delivers balanced cutting action and thread accuracy
• H2 thread limit ensures consistent tolerance for standard UNF fastener fit

Compatibility

Designed as a standard replacement or stock tap for 8-36 UNF through-hole threading operations in general machining and maintenance applications.

Installation Notes

This tap is installed and operated by machinists or skilled maintenance technicians using a tap wrench, tapping head, or machine spindle. Always use appropriate cutting fluid to extend tool life and produce cleaner threads. Ensure the tap is aligned perpendicular to the workpiece surface before applying cutting pressure. Never force a tap past resistance, as high-speed steel is brittle and will break if torque limits are exceeded.