How to Use a "T "Tap Wrench to create a thread for a screw

Learn how to cut an inner thread using a T tap wrench.

Difficulty: Moderately Easy

Instructions

Things You'll Need:

• T tap wrench
• cutting bit
• material in need of thread

1. 
   machine screw and cutting bit

   SIZING:
   Find the correct size cutting bit that will match the thread count and size of the screw. Also find one that is long enough to cover the length of the screw.

2. 
   nosecap

   ATTACHING BIT TO WRENCH:
   Unscrew the nosecap enough so that the collet fingers (part that holds the bit in pace) will open enough that you are able to slide the cutting bit into place. Tighten the nosecap until the cutting bit is securely in place.

3. 
   cutting bit making a thread in plastic

   CUTTING:
   Insert cutting bit into the desired hole and set the ratchet mechanism to turn either clockwise or counter clockwise. continue to turn the T wrench in the same direction until the cutting bit comes out the other side of the hole.

4. REMOVE TOOL:
   After the cutting bit has made the desired amount of thread. Reverse the direction of the ratchet mechanism and continue to turn until the cutting bit is completely removed from the hole.

5. 
   machine screw inserted into newly threaded hole

   FINISHED:
   A screw can now be secured into the hole.

Tips & Warnings

• in order to unscrew the nosecap, ratchet mechanism should be locked so that it does not turn in either direction
• make sure cutting bit goes in and out in a straight direction and does not make an angled cut
• excess material from cut can sometimes linger in the hole, clean it out before inserting screw
• cutting bit has sharp edges!
• not used for all types of materials
• angled cuts will not allow screw to be inserted completely