Century Drill 97118 3/4-16 Nf Fractional Hand Tap Carbon Steel

Product Description

The CENTURY DRILL TOOL CO INC 97118 is a fractional hand tap sized 3/4 inch-16 National Fine (NF) thread, manufactured from carbon steel. It is used to cut internal threads in a variety of materials by hand. The straight flutes are ground to promote rapid chip removal, supporting efficient threading throughout the cut. This tap produces a Class 2B thread fit, which is appropriate for routine maintenance and repair work where high-precision tolerance threads are not required. A licensed tradesperson or experienced maintenance technician is the typical installer.

This tap is suited for rethreading and repair applications in residential, commercial, and light industrial maintenance settings. It performs well when threading soft to medium-hardness materials by hand. Because it targets Class 2B thread accuracy, it is most appropriate for general-purpose fastening applications rather than precision-critical assemblies. The recommended drill bit size for tap preparation is 11/16 inch. This tap is sold in a package of 6 units.

Key Features

• 3/4 inch-16 National Fine (NF) thread specification
• Carbon steel construction for general-purpose hand threading
• Straight flutes ground for rapid chip removal and efficient threading
• Produces a Class 2B thread fit suitable for maintenance and repair
• Designed for hand threading in a variety of materials
• Requires an 11/16 inch drill bit for correct tap drill preparation

Compatibility

Designed for hand tapping applications requiring a 3/4 inch-16 National Fine thread in a range of materials; not intended for precision thread applications where tight tolerance Class 2A or 3B fits are specified.

Installation Notes

This tap is intended for hand threading use with a standard tap wrench; do not use in a power drill or tap driver without confirming the tool is rated for hand-tap sizes. Always use the specified 11/16 inch drill bit to prepare the pilot hole before tapping. Apply a suitable cutting fluid for the base material to extend tap life and reduce the risk of tap breakage. Back the tap off periodically to break chips and clear the flutes during the threading operation.