Tap Application Guide

List No.
Style of Taps
Recommended
Application
Materials
Hardness
HRC
300, 342
Spiral Pointed Taps VA3
Stainless Steels
304, 316, A286, 17-4PH
0-35
303, 343
Spiral Fluted Taps VA3
Stainless Steels
304, 316, A286, 17-4PH
0-35
397
Spiral Pointed-Long Shank VA3
Stainless Steels
304, 316, A286, 17-4PH
0-35
398
Spiral Fluted-Long Shank VA3
Stainless Steels
304, 316, A286, 17-4PH
0-35
399
Machining Center Taps VA3
General Purpose
1018, 1045, D2, H13
0-35
308, 318
EXO Pipe Taps
Stainless Steels
304, 316
0-25
305, 328
EXOTAP-Mold 8% CO Taps
Die Mold, Tool Steels
A1, 01, D2, H13
30-45
312, 312NI, 344
Spiral Pointed Taps VC10
Heat Resistant Alloyed
TI-Alloy, Inconel
20-45
313, 313NI, 345
Spiral Fluted Taps VC10
Heat Resistant Alloyed
TI-Alloy, Inconel
20-45
301
STI Point Taps VA3
Stainless Steels
304, 316, A286, 17-4PH
0-35
302
STI Spiral Taps VA3
Stainless Steels
304, 316, A286, 17-4PH
0-35
314
STI Point Taps VC10
Heat Resistant Alloyed
TI-Alloy, Inconel
20-45
315
STI Spiral Taps VC 10
Heat Resistant Alloyed
TI-Alloy, Inconel
20-45
310
EXOTIN TRF Forming Taps
Stainless Steels
1018, 304, 390AL
0-30
320
EXOTIN Spiral Pointed Taps
Stainless Steels
390AL
0-35

 


Additional OSG Tap Application Guides
If the application is not suited for EXO-Series taps, select the tap that is suited from the Tap Application Guide.

List No.
Style of Taps
Recommended
Application
Materials
Hardness
HRC
240, 241
HYPRO DC Straight Fluted
Die Cast Aluminum
356AL, 390AL
-
250, 260, 259
269, 280, 289
Spiral Pointed Taps VA3
General Purpose
1045, 4140, 304, D2, H13
0-35
220, 230, 229
239, 290, 299
Spiral Fluted Taps VA3
General Purpose
1045, 4140, 304, D2, H13
0-35
295, 296
HYPRO AL Spiral Fluted
Alloyed &
Cast Aluminum
390AL, 6061T6
-
288
HYPRO 7 Spiral Pointed Taps
General Purpose
1018, 1045, Aluminum
0-25
101C
Straight Fluted Taps
Gray Cast Iron
FC25
0-25
110, 111
TRF, M-BOSS Forming Taps
General Purpose
1018, 1045, 356AL
0-25
Standard Tap Section
All Types of HSS Taps
General Purpose

0-25

 

 

Tapping Guide

Materials
Condition
Hardness
Cutting
First Choice
Alternate
BHN
HRC
Speed-FPM
Low Carbon Steels
1010
1018
Normalized
-190
-10
25-50
HYPRO-Seven
TRF Tap 110, 111
M-Boss 171
EXOTAP VA3
EXOTIN 320
EXOTAP TRF 310
Standard Taps
Medium Carbon Steels
1035
1045
Normalized
-208
-15
20-40
HYPRO-Seven
TRF Tap 110, 111
M-Boss 171
HYPRO 280, 290, 250, 260, 220, 230
EXOTIN 320
EXOTAP TRF 310
Standard Taps
High Carbon Steels
1050
1065
Normalized
-253
-25
20-30
HYPRO 280, 290, 250, 260, 220, 230
EXOTAP TRF 310
EXOTAP VA3
EXOTIN 320
TRF Tap 110, 111
M-Boss 171
Standard Taps
High Strength Steels
4140
4340
Normalized
253-301
25-32
20-30
HYPRO 280, 290, 250, 260, 220, 230
EXOTAP VC10
4140
4340
Hardened
327-390
35-42
15-20
EXOTAP VC10
HYPRO 280, 290, 250, 260, 220, 230
Tool Steels
D2
H13
P20
Annealed
190-253
10-25
15-20
HYPRO 280, 290, 250, 260, 220, 230
EXOTAP VC10
EXOTAP Mold
EXOTAP TRF 310
D2
H13
P20
Hardened
327-390
35-42
12-20
EXOTAP VC10
EXOTAP Mold
Stainless Steel
303
304
316
Annealed
-253
-25
20-30
EXOTAP VA3
EXOTIN 320
EXOTAP TRF 310
HYPRO 280, 290, 250, 260, 220, 230
TRF Tap 110, 111
M-Boss 171
410
430
Hardened
327-390
35-42
12-20
EXOTAP VC10
EXOTAP VA3
EXOTIN 320
17-4
15-5
A286
Annealed
-253
-25
15-20
EXOTAP VA3
EXOTIN 320
HYPRO 280, 290, 250, 260, 220, 230
17-4
15-5
A286
Hardened
327-390
35-42
12-20
EXOTAP VC10
EXOTAP VA3
EXOTIN 320
Titanium Alloys
6AL4V
Annealed
253-301
25-32
15-20
EXOTAP VC10
-
6AL4V
6AL6V
Hardened
327-390
35-42
8-15
EXOTAP VC10
-
Nickel Base Alloys
Inconel 718
Annealed
253-301
25-32
8-15
EXOTAP VC10
-
Inconel 718
Hardened
327-390
35-42
5-10
EXOTAP VC10
-
Aluminum Alloys
2011
6061
707
Normalized
-150
-
25-60
HYPRO-Seven
HYPRO AL 295
TRF Tap 110, 111
M-Boss 171
HYPRO DC 240
EXOTAP TRF 310
Standard Taps
Aluminum Die Cast
356AL
390AL
As Cast
-150
-
30-80
HYPRO-Seven
HYPRO AL 295
HYPRO DC 240
TRF Tap 110, 111
M-Boss 171
EXOTAP TRF 310
Standard Taps
Magnesium
-
-
-100
-
30-80
HYPRO DC 240
HYPRO-Seven
Standard Taps
Brass, Bronze
-
-
-150
-
25-60
HYPRO DC 240
TRF Tap 110, 111
M-Boss 171
HYPRO-Seven
EXOTAP TRF 310
Standard Taps
Copper
-
-
-150
-
25-60
HYPRO AL 295
EXOTAP TRF 310
HYPRO-Seven
TRF Tap 110, 111
M-Boss 171
Beryllium Copper
-
-
-253
-25
20-30
EXOTAP VA3
EXOTIN 320
HYPRO 280, 290, 250, 260, 220, 230
EXOTAP TRF 310
Cast Iron
-
As Cast
-208
-15
20-40
101C Cast Iron
Standard Taps

 

Conversion Table
Surface Feet Per Minute To Revolutions Per Minute

Surface Feet
Per Minute
20
25
30
40
50
60
70
80
90
100
110
120
130
140
150
Tap Size
Revolutions Per Minute
0
1273
1592
1910
2546
3183
3820
4456
5093
5730
6366
7003
7639
8276
8913
9549
1
1047
1308
1570
2093
2617
3140
3663
4186
4710
5233
5756
6279
6808
7326
7849
2
888
1110
1333
1777
2221
2665
3109
3554
3999
4442
4886
5330
5774
6218
6662
3
772
964
1157
1543
1929
2315
2701
3086
3472
3858
4244
4629
5015
5401
5787
4
682
853
1023
1364
1705
2046
2387
2728
3069
3411
3751
4092
4434
4775
5116
5
611
764
917
1222
1528
1833
2139
2445
2750
3056
3361
3667
3973
4278
4584
6
553
691
829
1106
1382
1658
1934
2211
2487
2764
3040
3316
3592
3869
4145
8
466
583
699
932
1165
1398
1631
1864
2097
2330
2563
2796
3029
3262
3495
10
402
502
603
804
1005
1205
1406
1607
1808
2009
2210
2411
2612
2813
3014
12
354
442
531
707
884
1061
1238
1415
1592
1769
1945
2122
2300
2476
2653
1/4
306
382
458
611
764
917
1070
1222
1375
1528
1681
1833
1986
2139
2292
5/16
245
306
367
489
611
733
856
978
1100
1222
1345
1467
1589
1711
1833
3/8
204
255
306
407
509
611
713
815
917
1019
1120
1222
1324
1426
1528
7/16
175
219
262
349
437
524
611
698
786
873
960
1048
1135
1222
1310
1/2
153
191
229
306
382
458
535
611
688
764
840
917
993
1070
1146
9/16
137
172
206
275
344
412
481
550
619
687
756
825
893
963
1031
5/8
122
153
183
244
306
367
428
489
550
611
672
733
794
856
917
3/4
102
128
153
203
255
306
357
407
458
509
560
611
662
713
764
7/8
87
109
131
175
218
262
306
350
392
437
480
524
568
611
655
1
76
96
115
153
191
230
268
306
344
382
420
458
497
535
573


Formula

Example
(1/4-20 Tap)







SFM x 3.82

20 x 3.82

RPM  =
——————
=
—————
=  305 RPM

Tap DIA.

0.250

 
NEWS
Technical Sections

Taps --
Technical information on tapping
Drills --
Technical information on drilling
End Mills --
Technical information on milling
Surface Treatments --
Surface treatment infomation
MSDS --
Material Safety Data Sheet
Thread Mills --
Technical information on Thread Mills