Tap Drill Chart
TAPTAP DRILLDecimal Drill SizeTheo. % of Thread Probable OversizeProbable Hole Size% of THREAD
0-8056 .046583.0015.048074
3/64.046981.0015.048071
1-6454 .055089.0015.056581
53 .059567.0015.061059
1-7253 .059575.0015.061067
1/16.062558.0015.064050
2-5651 .067082.0017.068774
50 .070069.0017.071762
49 .073056.0017.074749
2-6450 .070079.0017.071770
49 .073064.0017.074756
3-4848 .076085.0019.077978
5/64.078177.0019.080070
47 .078576.0019.080469
46 .081067.0019.082960
45 .082063.0019.083956
3-5646 .081078.0019.082969
45 .082073.0019.083965
44 .086056.0020.088047
4-4044 .086080.0020.088074
43 .089071.0020.091065
42 .093557.0020.095551
3/32.093856.0020.095850
4-4842 .093568.0020.095561
3/32.093868.0020.095860
41 .096059.0020.098052
5-4040 .098083.0023.100376
39 .099579.0023.101871
38 .101572.0023.103865
37 .104065.0023.106358
5-4438 .101579.0023.103872
37 .104071.0023.106363
36 .106563.0023.108855
6-3237 .104084.0023.106378
36 .106578.0023.108872
7-64.109470.0026.112064
35 .110069.0026.112663
34 .111067.0026.113660
33 .113062.0026.115655
6-4034 .111083.0026.113675
33 .113077.0026.115669
32 .116068.0026.118660
8-3229 .136069.0029.138962
28 .140558.0029.143451
8-3629 .136078.0029.138970
28 .140568.0029.143457
9-64.140668.0029.143557
10-2427 .144085.0032.147279
26 .147079.0032.150274
25 .149575.0032.152769
24 .152070.0032.155264
23 .154067.0032.157261
10-32 5/32.156383.0032.159575
22 .157081.0032.160273
21 .159076.0032.162268
20 .161071.0032.164264
19 .166059.0032.169251
12-24 11/64.171982.0035.175475
17 .173079.0035.176573
16 .177072.0035.180566
15 .180067.0035.183560
14 .182063.0035.185556
12-2816 .177084.0035.180577
15 .180078.0035.183570
14 .182073.0035.185566
13 .185067.0035.188559
3/16.187561.0035.191054
1/4-209 .196083.0038.199877
8 .199079.0038.202873
7 .201075.0038.204870
13/64.201372.0038.206966
6 .204071.0038.207865
5 .205569.0038.209363
4 .209063.0038.212857
1/4-283 .213080.0038.216872
7/32.218867.0038.222659
2 .221063.0038.224855
5/16-18F .257077.0038.260872
G .261071.0041.265166
17/64.265665.0041.269759
H .266064.0041.270159
5/16-24H .266086.0041.270178
I .272075.0041.276167
J .277066.0041.281158
3/8-16 5/16.312577.0044.316972
O .316073.0044.320468
P .323 64.0044.327459
3/8-24 21/64.328187.0044.332579
Q .332079.0044.336471
R .339067.0044.343458
7/16-14T .358086.0046.362681
23/64.359484.0046.364079
U .368075.0046.372670
3/8.375067.0046.379662
V .377065.0046.381660
7/16-20W .386079.0046.390672
25/64.390672.0046.395265
X .397062.0046.401655
1/2-13 27/64.421978.0047.426673
7/16.437563.0047.442258
1/2-20 29/64.453172.0047.457865

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