Taper Length ( long series) Drills

taper length drill

These drills are used when a longer overall and flute length are needed.


Taper Length Drills ( long series )
ordering by DR-"size"TL

ordering by DR-"size"TL

ordering by DRM-"size"TL
 

 Size ( inches)

Size (mm)

Decimal inch
  1.00 0.0394
  1.20 0.0472
  1.30 0.0512
  1.40 0.0551
  1.50 0.0591
1/16   0.0625
  1.60 0.0630
  1.70 0.0669
  1.75 0.0689
  1.80 0.0709
  1.90 0.0748
5/64   0.0781
  2.00 0.0787
  2.05 0.0807
  2.10 0.0827
  2.15 0.0846
  2.20 0.0866
  2.25 0.0886
  2.30 0.0906
  2.35 0.0925
3/32   0.0938
  2.40 0.0945
  2.45 0.0965
  2.50 0.0984
  2.55 0.1004
  2.60 0.1024
  2.65 0.1043
  2.70 0.1063
  2.75 0.1083
7/64   0.1094
  2.80 0.1102
  2.85 0.1122
  2.90 0.1142
  2.95 0.1161
  3.00 0.1181
  3.10 0.1220
1/8   0.1250
  3.20 0.1260
  3.25 0.1280
  3.30 0.1299
  3.40 0.1339
  3.50 0.1378
9/64   0.1406
  3.60 0.1417
  3.70 0.1457
  3.75 0.1476
  3.80 0.1496
  3.90 0.1535
5/32   0.1562
  4.00 0.1575
  4.10 0.1614
  4.20 0.1654
  4.25 0.1673
  4.30 0.1693
11/64   0.1719
  4.40 0.1732
  4.50 0.1772
  4.60 0.1811
  4.70 0.1850
  4.75 0.1870
3/16   0.1875
  4.80 0.1890
  4.90 0.1929
  5.00 0.1968
  5.10 0.2008
13/64   0.2031
  5.20 0.2047
  5.25 0.2067
  5.30 0.2087
  5.40 0.2126
  5.50 0.2165
7/32   0.2188
  5.60 0.2205
  5.70 0.2244
  5.75 0.2264
  5.80 0.2283
  5.90 0.2323
15/64   0.2344
  6.00 0.2362
  6.10 0.2402
  6.20 0.2441
  6.30 0.2480
1/4   0.2500
  6.40 0.2520
  6.50 0.2559
  6.60 0.2598
  6.70 0.2638
17/64   0.2656
  6.75 0.2657
  6.80 0.2677
  6.90 0.2717
  7.00 0.2756
  7.10 0.2795
9/32   0.2812
  7.20 0.2835
  7.25 0.2854
  7.30 0.2874
  7.40 0.2913
  7.50 0.2953
19/64   0.2969
  7.60 0.2992
  7.70 0.3031
  7.75 0.3051
  7.80 0.3071
  7.90 0.3110
5/16   0.3125
  8.00 0.3150
  8.10 0.3189
  8.20 0.3228
  8.30 0.3268
21/64   0.3281
  8.40 0.3307
  8.50 0.3346
  8.60 0.3386
  8.70 0.3425
11/32   0.3438
  8.75 0.3445
  8.80 0.3465
  8.90 0.3504
  9.00 0.3543
  9.10 0.3583
23/64   0.3594
  9.20 0.3622
  9.25 0.3642
  9.30 0.3661
  9.40 0.3701
  9.50 0.3740
3/8   0.3750
  9.60 0.3780
  9.70 0.3819
  9.75 0.3839
  9.80 0.3858
  9.90 0.3898
25/64   0.3906
  10.00 0.3937
  10.10 0.3976
  10.20 0.4016
  10.25 0.4035
  10.30 0.4055
13/32   0.4062
  10.40 0.4094
  10.50 0.4134
  10.60 0.4173
  10.70 0.4213
27/64   0.4219
  10.75 0.4232
  10.80 0.4252
  10.90 0.4291
  11.00 0.4331
  11.10 0.4370
7/16   0.4375
  11.20 0.4409
  11.30 0.4449
  11.40 0.4488
  11.50 0.4528
29/64   0.4531
  11.60 0.4567
  11.70 0.4606
  11.80 0.4646
  11.90 0.4685
15/32   0.4688
  12.00 0.4724
  12.10 0.4764
  12.20 0.4803
  12.30 0.4843
31/64   0.4844
  12.40 0.4882
  12.50 0.4921
  12.60 0.4961
1/2 12.70 0.5000
  12.80 0.5039
  12.90 0.5079
  13.00 0.5118
33/64   0.5156
  13.10 0.5157
  13.20 0.5197
  13.30 0.5236
  13.40 0.5276
17/32   0.5312
  13.50 0.5315
  13.60 0.5354
  13.70 0.5394
  13.75 0.5413
  13.80 0.5433
35/64   0.5469
  13.90 0.5472
  14.00 0.5512
  14.25 0.5610
9/16   0.5625
  14.50 0.5709
37/64   0.5781
  14.75 0.5807
  15.00 0.5906
19/32   0.5938
  15.25 0.6004
39/64   0.6094
  15.50 0.6102
  15.75 0.6201
5/8   0.6250
  16.00 0.6299
  16.25 0.6398
41/64   0.6406
  16.50 0.6496
21/32   0.6562
  16.75 0.6594
  17.00 0.6693
43/64   0.6719
  17.25 0.6791
11/16   0.6875
  17.50 0.6890
  17.75 0.6988
45/64   0.7031
  18.00 0.7087
  18.25 0.7185
23/32   0.7188
  18.50 0.7283
47/64   0.7344
  18.75 0.7382
  19.00 0.7480
3/4   0.7500
  19.25 0.7579
  19.50 0.7677
  19.75 0.7776
25/32   0.7812
  20.00 0.7874
  20.25 0.7972
  20.50 0.8071
13/16   0.8125
  20.75 0.8169
  21.00 0.8268
  21.25 0.8366
27/32   0.8438
  21.50 0.8465
  21.75 0.8563
  22.00 0.8661
7/8   0.8750
  22.25 0.8760
  22.50 0.8858
  22.75 0.8957
  23.00 0.9055
29/32   0.9062
  23.25 0.9154
  23.50 0.9252
  23.75 0.9350
15/16   0.9375
  24.00 0.9449
  24.25 0.9547
  24.50 0.9646
31/32   0.9688
  24.75 0.9744
  25.00 0.9843
1"   1.0000
  26.00 1.0236
1-1/32   1.0312
1-1/16   1.0625
  27.00 1.0630
1-3/32   1.0938
  28.00 1.1024
1-1/8   1.1250
  29.00 1.1417
1-5/32   1.1562
  30.00 1.1811
1-3/16   1.1875
1-7/32   1.2188
1-1/4   1.2500
1-5/16   1.3125
1-3/8   1.3750
1-7/16   1.4375
1-1/2   1.5000
     

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