
Overall Thread Thread+Neck Shank Size of Length of
length length length dia. square square
L ℓ ℓn Ds K ℓk
ZELX NI SP Spiral Fluted Taps for Nickel Base Alloys
L ℓ ℓn Ds K ℓk No. of
(for blind hole)
Spiral Fluted Taps Spiral Fluted Taps Spiral Pointed Taps
Size Class Code Chamfer Type
(inch) (inch) (inch) (inch) (inch) (inch) flutes
GH6 Y87563
5/16-24UNF 3P 2.718 0.394 1.125 0.318 0.238 0.375 3 3
GH7 Y87576
Y87517 3P
GH3
(for through hole)
Y87017 1.5P
3/8-16UNC 2.937 0.551 1.25 0.381 0.286 0.437 3 3
Y87547 3P
GH5
Y87047 1.5P
GH3 Y87518
3P
Y87533
(for through hole)
GH4
Y87033 1.5P
3/8-24UNF 2.937 0.394 1.25 0.381 0.286 0.437 3 3
GH5 Y87548
GH6 Y87564 3P
GH7 Y87578
Hand Taps
GH3 Y87519
7/16-14UNC 3P 3.156 0.591 - 0.323 0.242 0.406 3 4
GH5 Y87549
Y87520 3P
GH3
Y87573 1.5P
7/16-20UNF 3.156 0.472 - 0.323 0.242 0.406 3 4
Carbide Taps
Cemented
Y87550 3P
GH5
Y87050 1.5P
Y87521 3P
GH3
Y87500 1.5P
1/2-13UNC Y87551 3P 3.375 0.630 - 0.367 0.275 0.437 3 4
Roll Taps
GH5
Y87051 1.5P
GH7 Y87581 3P
Y87522 3P
GH3
Y87022 1.5P
Simple Inspection Tools Pipe Taps
1/2-20UNF 3.375 0.472 - 0.367 0.275 0.437 3 4
GH5 Y87552
3P
GH7 Y87582
GH3 Y88554
9/16-18UNF 3P 3.593 0.512 - 0.429 0.322 0.5 3 4
GH5 Y88542
GH3 Y87525
5/8-11UNC GH5 Y87555 3P 3.812 0.748 - 0.480 0.36 0.562 4 4
GH7 Y87585
Y87526 3P
GH3
Y81508 1.5P
5/8-18UNF Thread Mills
3.812 0.512 - 0.480 0.36 0.562 4 4
GH4 Y87536
3P
GH5 Y87556
Y87527 3P
GH3
3/4-10UNC Y87027 1.5P 4.25 0.827 - 0.590 0.442 0.687 4 4
Dies
GH5 Y87557 3P
GH3 Y87528
3/4-16UNF 3P 4.25 0.591 - 0.590 0.442 0.687 4 4
GH5 Y87558
Center Drills
Centering Tools
ANSI
SP-30
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