Fillable Printable Best Tap Drill Chart
Fillable Printable Best Tap Drill Chart
Best Tap Drill Chart
Drill SizeDec. Eq.Drill SizeDec. Eq.Drill SizeDec. Eq.Drill SizeDec. Eq.
00.060800.0453/640.047550.052520.064500.070
640.054530.0601/160.063
720.056530.060520.064
560.064500.070490.073
640.067500.070480.076
480.073470.079440.086
560.077450.082430.089
400.081430.089410.096
480.086420.094400.098
400.094380.1027/640.109
440.097370.104350.110
320.100360.107320.116
40
0.107
330.113310.120
320.126290.13627
0.144
360.130290.136260.147
240.139220.157200.161
320.152210.159180.170
240.165160.177120.189
280.172140.182100.194
320.178130.18590.196
200.18970.2017/320.219
280.20630.21310.228
320.2127/320.21910.228
180.244F0.257J0.277
240.261I0.2729/320.281
320.2749/320.281L0.290
160.2985/160.313Q0.332
240.324Q0.332S0.348
320.33711/320.344T0.358
140.350U0.36825/640.391
200.37625/640.39113/320.406
280.394Y0.404Z0.413
130.40627/640.42229/640.453
200.43929/640.45315/320.469
280.45615/320.46915/320.469
120.46031/640.48433/640.516
180.49433/640.51617/320.531
240.51133/640.51617/320.531
110.51417/320.5319/160.563
180.55737/640.57819/320.594
240.57437/640.57819/320.594
11/160.688
240.63641/640.64121/320.65645/640.70323/320.719
100.62721/320.65611/160.688
160.67311/160.68845/640.703
200.68945/640.70323/320.719
13/160.813
200.75149/640.76625/320.78153/640.82827/320.844
90.73949/640.76651/640.797
140.78713/160.81353/640.828
200.81453/640.82827/320.844
15/160.938
200.87657/640.89129/320.90661/640.95331/320.969
80.8477/80.87559/640.922
120.89815/160.93861/640.953
200.93961/640.95331/320.969
Tap & Drill Chart
STANDARD
Tap & Clearance Drill Sizes
Tap DrillClearance Drill
Screw
Size
Major
Diameter
Threads
Per Inch
Minor
Diameter
75% Thread for
Aluminum, Brass
& Plastics
50% Thread for
Steel, Stainless
& Iron
Close FitFree Fit
10.073480.076460.081
20.086430.089410.096
30.099370.104350.110
40.112320.116300.129
50.125300.129290.136
60.138270.144250.150
80.164180.170160.177
100.19090.19670.201
120.21620.22110.228
1/40.250F0.257H0.266
5/160.313P0.323Q0.332
3/80.375W0.386X0.397
7/160.43829/640.45315/320.469
1/20.50033/640.51617/320.531
9/160.56337/640.57819/320.594
5/80.62541/640.64121/320.656
3/40.75049/640.76625/320.781
7/80.87557/640.89129/320.906
11.0001-1/641.0161-1/321.031
Screw Size
(mm)
Thread Pitch
(mm)
Drill Size
(mm)
Closest
American
Drill
Drill Size
(mm)
Closest
American
Drill
Drill Size
(mm)
Closest
American Drill
Drill Size
(mm)
Closest
American
Drill
M1.5
0.351.15561.25551.601/161.6552
M1.6
0.351.25551.35541.70511.7550
M1.8
0.351.45531.551/161.90492.005/64
0.451.551/161.7051
0.401.60521.7550
M2.2
0.451.75501.90482.303/322.4041
M2.5
0.452.05462.20442.65372.757/64
0.602.40412.6037
0.502.50392.7036
M3.5
0.602.90323.10313.70273.8524
0.753.25303.5028
0.703.30303.5028
M4.5
0.753.75254.00224.75135.009
1.004.00214.4011/64
0.904.10204.4017
0.804.20194.5016
M5.5
0.904.60144.90105.8016.10B
1.005.0085.404
0.755.25
45.507/32
1.006.00B6.40E
0.756.25D6.50F
1.256.80H7.20J
1.007.00J7.40L
1.257.80N8.20P
1.008.00O8.4021/64
1.508.50R9.00T
1.258.8011/329.2023/64
1.009.00T9.40U
M11
1.509.503/810.00X11.6029/6412.1015/32
1.7510.3013/3210.9027/64
1.5010.50Z11.007/16
1.2510.8027/6411.207/16
2.0012.1015/3212.701/2
1.5012.501/213.0033/64
1.2512.801/213.2033/64
M15
1.5013.5017/3214.0035/6415.755/816.5021/32
2.0014.0035/6414.7537/64
1.5014.5037/6415.0019/32
1.5015.5039/6416.005/8
2.5015.5039/6416.5041/64
2.0016.005/816.7521/32
1.5016.5021/3217.0043/64
2.5016.5021/3217.5011/16
2.50
17.5011/1618.5023/32
2.0018.0045/6418.5047/64
1.5018.5047/6419.003/4
53/64
2.10
3.3030
Tap & Drill Chart
21.0053/6422.0055/64
20.0025/3221.00
G
4.20194.4017
11.00
N
S
44
3.151/8
M6
M2
M3
M4
M8
6.30E6.60
9.90
452.20
M16
M17
M18
M19
M5
M10
M12
M14
M9
M7
M20
7.40L7.70
8.40Q8.80
9.503/8
15.50
25/64
16.7521/3217.500.6875
10.50Z
18.0045/6418.50
12.601/213.20
14.75
Tap Drill
Clearance Drill
19.00
5.25
Free FitClose Fit
47/64
0.4375
33/64
37/64
METRIC
Tap & Clearance Drill
Sizes
3/420.0025/32
55.500.22
39/64
50% Thread for
Steel, Stainless
& Iron
75% Thread for
Aluminum, Brass
& Plastics
