Combination Tap and Die Set - Draper 76 Piece Metric and BSP

This set is designed for use on mild steel and aluminum.

Use a suitable cutting oil designed for metalworking. This will help reduce friction and prevent damage to the tools and workpiece.

Identify the thread size you need to cut or clean. The set includes a screw-pitch gauge to measure the thread pitch and help you select the correct tap or die.

Use a tap extractor tool. If the tap is broken flush with the surface, you may need to use a specialized extractor or consult a professional.

The screw-pitch gauge is used to measure the pitch (distance between threads) of a screw or bolt, which helps you determine the correct tap or die size to use.

Clean them after each use, store them in a dry place, and apply a light coat of oil to prevent rust.

This set is primarily designed for mild steel and aluminum. While it *might* work on stainless steel, it is not recommended as it may damage the tools. Use tools specifically designed for stainless steel.

Taper taps start with a tapered thread for easy starting, while plug taps (bottoming) have a less tapered or no taper, for use when threading to the bottom of a blind hole.

Ensure you are using the correct size, applying adequate cutting oil, and backing off the tap/die frequently to clear chips. Check for any obstructions in the hole.

Check the tap or die for damage. Ensure the correct drill bit size was used for the pilot hole. Make sure the material is within the set's capability (mild steel or aluminum).

Make sure the tap is straight and aligned. Do not force the tap; turn it gradually. Use a tap extractor to remove the broken tap.

Tighten the die holder screws securely, and ensure the die is correctly positioned with the cutting side facing the work.