1. TAPS & DIES

2. TAPS USED TO CUT INTERNAL THREADS TAP HANDLE TAP AND HANDLE
(QUESTION ON TOOL TEST)
TAP HANDLE
TAP AND HANDLE
RE-THREADING
A NUT

3. CUTTING THREADS ON OUR FIRST SHOP PROJECT

4. DIFFERENT KINDS OF TAPS
TAPER
BOTTOMING
PLUG

5. WHEN TO USE DIFFERENT KINDS OF TAPS
ALWAYS USE TAPER OR PLUG TO START NEW HOLES
HAVE TO CHANGE TO A BOTTOMING TAP WHEN THREADING TO THE BOTTOM OF BLIND HOLE
BLIND HOLE - DOESN’T GO ALL THE WAY THROUGH

6. HOW TO USE USE CUTTING OIL WHEN MAKING NEW THREADS
ON EVERYTHING EXCEPT CAST IRON
NO MORE THAN 2 TURNS WITHOUT BACKING UP A 1/2 TURN

7. DIFFERENT WAYS TO DRIVE TAPS
WITH “T”
HANDLE
WITH
RATCHET
WHEN SPACE IS A PROBLEM

8. DIES
DIE HANDLE

9. USES FOR DIES CUT EXTERNAL THREADS (ON TOOL TEST)
CLEAN (CHASE) EXTERNAL THREADS

10. HOW TO USE USE CUTTING OIL WHEN MAKING NEW THREADS
NO MORE THAN 2 TURNS WITHOUT BACKING UP A 1/2 TURN (JUST LIKE TAPS)

11. SELECTING THE RIGHT TAP OR DIE
YOU HAVE TO KNOW 2 THINGS
DIAMETER (DISTANCE ACROSS)
HOW CLOSE THE THREADS ARE TO EACH OTHER
THREADS PER INCH (U.S.C.S.)
MILLIMETERS BETWEEN THREADS (METRIC)

12. FINDING THE DIAMETER

13. FINDING HOW CLOSE THE THREADS ARE TOGETHER
MEASURES THREADS PER INCH
THREAD PITCH GAUGE

14. FINDING HOW CLOSE THE THREADS ARE TOGETHER
IN THE USCS THERE ARE TWO MAJOR THREAD
SERIES FOR BOLTS AND NUTS (ON TOOL TEST)
NATIONAL COARSE
(NC)

15. THREAD SERIES NATIONAL COARSE (NC) NATIONAL FINE (NF)
THERE IS ALSO BRAKE THREAD, TUBING THREAD
PIPE THREAD PLUS METRIC THREAD (NOT ON TEST)

16. SET TO 1/2” APPROXIMATELY $80