Introduction
The Model H7819 High Speed Steel Tap and Drill
Set comes supplied with six of the most commonly
used coarse thread sizes with the corresponding
tap drill. Each size set has taps with taper, plug,
and bottoming grinds, allowing you to choose the
right tap for any job. Tap handle not included.
Inventory
A.
27
⁄
64
" Tap Drill .............................................. 1
B.
1
⁄
2
"-13 Plug Tap .......................................... 1
C.
1
⁄
2
"-13 Bottoming Tap ................................. 1
D.
1
⁄
2
"-13 Taper Tap ........................................ 1
E.
5
⁄
16
" Tap Drill ............................................... 1
F.
3
⁄
8
"-16 Plug Tap .......................................... 1
G.
3
⁄
8
"-16 Bottoming Tap ................................. 1
H.
3
⁄
8
"-16 Taper Tap ........................................ 1
I.
F Tap Drill ................................................... 1
J.
5
⁄
16
"-18 Plug Tap ......................................... 1
K.
5
⁄
16
"-18 Bottoming Tap ................................ 1
L.
5
⁄
16
"-18 Taper Tap ....................................... 1
M.
#7 Tap Drill ................................................. 1
N.
1
⁄
4
"-20 Plug Tap .......................................... 1
O.
1
⁄
4
"-20 Bottoming Tap ................................. 1
P.
1
⁄
4
"-20 Taper Tap ........................................ 1
Q.
#25 Tap Drill ............................................... 1
R.
#10-24 Plug Tap ......................................... 1
S.
#10-24 Bottoming Tap ................................ 1
T.
#10-24 Taper Tap ...................................... 1
U.
#29 Tap Drill ............................................... 1
V.
#8-32 Plug Tap ........................................... 1
W.
#8-32 Bottoming Tap .................................. 1
X.
#8-32 Taper Tap ........................................ 1
MODEL H7819
24-PC H.S.S. DRILL &
TAP SET
INSTRUCTION SHEET
Figure 1.
Model H7819.
COPYRIGHT © AUGUST, 2006 BY GRIZZLY INDUSTRIAL, INC.
WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE
OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.
#PC8462 PRINTED IN CHINA
Always wear safety
glasses when tapping!
Identification
Tapered Taps:
Tapered taps have 7-10 threads
at the bottom that are tapered. The lengthened
taper on these taps makes it easier to keep the
tap straight as the cutting begins.
Plug Taps:
Plug taps have 3-4 threads at the bot-
tom that are tapered. Plug taps follow the tapered
tap. Plug taps are designed for tapping open or
"through holes." They can also be used for start-
ing threads on easily cut materials like aluminium,
brass and cast iron.
Bottoming Taps:
Bottoming taps have 1-2 threads
at the bottom that are tapered. Bottoming taps are
generally used for cutting threads as close as
possible to the bottom of a hole or "blind holes."
The bottoming tap is usually used after threads
have been started with the taper tap or the plug
tap (see
Figure 2
).
Tap Drill:
The tap drill is a standard jobber type
drill used for drilling the pilot hole.
