Drill Size | Decimal Equiv. | Tap size | MM Equivalent | Clearance Close Fit | Clearance Free Fit | Thread Depth (%) |
Drill Size | Decimal Equiv. | Tap size | MM Equivalent | Clearance Close Fit | Clearance Free Fit | Thread Depth (%) |
|||
107 | 0.00190 | 0.0483 | 68 | 0.03100 | 0.7874 | |||||||||||
0.00197 | 0.0500 | >>> 1/32″ | 0.03125 | 0.7938 | ||||||||||||
106 | 0.00230 | 0.0584 | .80 mm | 0.03150 | 0.8000 | ‘ | ||||||||||
105 | 0.00270 | 0.0686 | 67 | 0.03200 | 0.8128 | |||||||||||
104 | 0.00310 | 0.0787 | 66 | 0.03300 | 0.8382 | |||||||||||
103 | 0.00350 | 0.0889 | .85 mm | 0.03346 | 0.8500 | |||||||||||
102 | 0.00390 | 0.0991 | 65 | 0.03500 | #00-90 | 0.8890 | 0.05200 in | |||||||||
0.00394 | 0.1000 | .90 mm | 0.03543 | 0.9000 | ||||||||||||
101 | 0.00430 | 0.1092 | 64 | 0.03600 | 0.9144 | |||||||||||
100 | 0.00470 | 0.1194 | 63 | 0.03700 | 0.9398 | |||||||||||
99 | 0.00510 | 0.1295 | .95 mm | 0.03740 | 0.9500 | |||||||||||
98 | 0.00550 | 0.1397 | 62 | 0.03800 | 0.9652 | |||||||||||
97 | 0.00590 | 0.1499 | 61 | 0.03900 | 0.9906 | |||||||||||
96 | 0.00630 | 0.1600 | 1.00 mm | 0.03937 | 1.0000 | |||||||||||
95 | 0.00670 | 0.1702 | 60 | 0.04000 | 1.0160 | |||||||||||
94 | 0.00710 | 0.1803 | 59 | 0.04100 | 1.0414 | |||||||||||
93 | 0.00750 | 0.1905 | 1.05 mm | 0.04134 | 1.0500 | |||||||||||
92 | 0.00790 | 0.2007 | 58 | 0.04200 | 1.0668 | |||||||||||
.2 mm | 0.00787 | 0.2000 | 57 | 0.04300 | 1.0922 | |||||||||||
91 | 0.00830 | 0.2108 | 1.10 mm | 0.04331 | 1.1000 | |||||||||||
90 | 0.00870 | 0.2210 | 1.15 mm | 0.04528 | 1.1500 | |||||||||||
89 | 0.00910 | 0.2311 | 56 | 0.04650 | 1.1811 | |||||||||||
88 | 0.00950 | 0.2413 | >>> 3/64″ | 0.04688 | #0-80 | 1.1906 | 0.06350 in | 0.07000 in | ||||||||
.25 mm | 0.00984 | 0.2500 | 1.20 mm | 0.04724 | 1.2000 | |||||||||||
87 | 0.01000 | 0.2540 | 1.25 mm | 0.04921 | 1.2500 | |||||||||||
86 | 0.01050 | 0.2667 | 1.30 mm | 0.05118 | 1.3000 | |||||||||||
85 | 0.01100 | 0.2794 | 55 | 0.05200 | 1.3208 | |||||||||||
84 | 0.01150 | 0.2921 | 1.35 mm | 0.05315 | 1.3500 | |||||||||||
.30 mm | 0.01181 | 0.3000 | 54 | 0.05500 | 1.3970 | |||||||||||
83 | 0.01200 | 0.3048 | 1.40 mm | 0.05512 | 1.4000 | |||||||||||
82 | 0.01250 | 0.3175 | 1.45 mm | 0.05709 | 1.4500 | |||||||||||
.32 mm | 0.01260 | 0.3200 | 1.50 mm | 0.05906 | 1.5000 | |||||||||||
81 | 0.01300 | 0.3302 | 53 | 0.05950 | #1-64, #1-72 | 1.5113 | 0.07600 in | 0.08100 in | ||||||||
80 | 0.01350 | 0.3429 | 1.55 mm | 0.06102 | 1.5500 | |||||||||||
.35 mm | 0.01378 | 0.3500 | >>> 1/16″ | 0.06250 | 1.5875 | |||||||||||
.36 mm | 0.01417 | 0.3600 | 1.60 mm | 0.06299 | M2×0.4 | 1.6000 | 2.2 mm | |||||||||
79 | 0.01449 | 0.3680 | 52 | 0.06350 | 1.6129 | |||||||||||
.38 mm | 0.01496 | 0.3800 | 1.65 mm | 0.06496 | 1.6500 | |||||||||||
>>> 1/64″ | 0.01563 | #0000-160 | 0.3969 | 0.02400 in | 1.70 mm | 0.06693 | 1.7000 | |||||||||
.40 mm | 0.01575 | 0.4000 | 51 | 0.06700 | #2-56 | 1.7018 | 0.08900 in | 0.09600 in | ||||||||
78 | 0.01600 | 0.4064 | 1.75 mm | 0.06890 | M2.2×0.45 | 1.7500 | 2.25 mm | |||||||||
.42 mm | 0.01654 | 0.4200 | 50 | 0.07000 | #2-56, #2-64 | 1.7780 | 0.08900 in | 0.09600 in | ||||||||
.44 mm | 0.01732 | 0.4400 | 1.80 mm | 0.07087 | 1.8000 | |||||||||||
.45 mm | 0.01772 | 0.4500 | 1.85 mm | 0.07283 | 1.8500 | |||||||||||
77 | 0.01800 | 0.4572 | 49 | 0.07300 | 1.8542 | |||||||||||
.46 mm | 0.01811 | 0.4600 | 1.90 mm | 0.07480 | 1.9000 | |||||||||||
.48 mm | 0.01890 | 0.4800 | 48 | 0.07600 | 1.9304 | |||||||||||
.50 mm | 0.01969 | 0.5000 | 1.95 mm | 0.07677 | 1.9500 | |||||||||||
76 | 0.02000 | 0.5080 | 1.96 mm | 0.07717 | #3-48 | 1.9600 | 0.10400 in | 0.11000 in | 81 | |||||||
75 | 0.02100 | 0.5334 | 1.97 mm | 0.07756 | #3-48 | 1.9700 | 0.10400 in | 0.11000 in | 79 | |||||||
.55 mm | 0.02165 | 0.5500 | >>> 5/64″ | 0.07813 | #3-48 | 1.9844 | 0.10400 in | 0.11000 in | 78 | |||||||
74 | 0.02250 | 0.5715 | 47 | 0.07850 | #3-48 | 1.9939 | 0.10400 in | 0.11000 in | 76 | |||||||
.60 mm | 0.02362 | 0.6000 | 2.00 mm | 0.07874 | #3-48 | 2.0000 | 0.10400 in | 0.11000 in | 75 | |||||||
73 | 0.02400 | 0.6096 | 2.01 mm | 0.07913 | #3-48 | 2.0100 | 0.10400 in | 0.11000 in | 74 | |||||||
72 | 0.02500 | 0.6350 | 2.02 mm | 0.07953 | #3-48 | 2.0200 | 0.10400 in | 0.11000 in | 72 | |||||||
.65 mm | 0.02559 | 0.6500 | 2.03 mm | 0.07992 | #3-48 | 2.0300 | 0.10400 in | 0.11000 in | 71 | |||||||
71 | 0.02600 | #000-120 | 0.6604 | 0.03700 in | 2.04 mm | 0.08031 | #3-48 #3-56 |
2.0400 | 0.10400 in | 0.11000 in | 69 81 |
|||||
.70 mm | 0.02756 | 0.7000 | 2.05 mm | 0.08071 | #3-48 #3-56 M2.5×0.45 |
2.0500 | 0.10400 in |
0.11000 in |
68 79 |
|||||||
70 | 0.02800 | 0.7112 | 46 | 0.08100 | #3-48 #3-56 |
2.0574 | 0.10400 in | 0.11000 in | 66 77 |
|||||||
69 | 0.02920 | 0.7417 | 2.07 mm | 0.08150 | #3-48 #3-56 |
2.0700 | 0.10400 in | 0.11000 in | 65 75 |
|||||||
.75 mm | 0.02953 | 0.7500 | 45 | 0.08200 | #3-48 #3-56 |
2.0828 | 0.10400 in | 0.11000 in | 66 74 |
|||||||
Drill Size | Decimal Equiv. | Tap size | MM Equivalent | Clearance Close Fit | Clearance Free Fit | Thread Depth (%) |
Drill Size | Decimal Equiv. | Tap size | MM Equivalent | Clearance Close Fit | Clearance Free Fit | Thread Depth (%) |
|||
2.09 mm | 0.08228 | #3-48 #3-56 |
2.0900 | 0.10400 in | 0.11000 in | 62 72 |
3.30 mm | 0.12992 | M4×0.7 | 3.3000 | 4.10 mm | 75 | ||||
2.10 mm | 0.08268 | #3-48 #3-56 |
2.1000 | 0.10400 in | 0.11000 in | 60 70 |
3.40 mm | 0.13386 | 3.4000 | |||||||
2.11 mm | 0.08307 | #3-48 #3-56 |
2.1100 | 0.10400 in | 0.11000 in | 59 69 |
29 | 0.13600 | #8-32 , #8-36 | 3.4544 | 0.16950 in | 0.17700 in | 69 | |||
2.12 mm | 0.08346 | #3-56 | 2.1200 | 0.10400 in | 0.11000 in | 67 | 3.50 mm | 0.13780 | M4×0.5 | 3.5000 | 4.10 mm | 60 | ||||
2.13 mm | 0.08386 | #3-56 | 2.1300 | 0.10400 in | 0.11000 in | 65 | 28 | 0.14050 | 3.5687 | |||||||
2.14 mm | 0.08425 | #3-56 | 2.1400 | 0.10400 in | 0.11000 in | 63 | >>> 9/64″ | 0.14063 | 3.5719 | |||||||
2.15 mm | 0.08465 | #3-56 M2.5×0.35 |
2.1500 | 0.10400 in | 0.11000 in | 62 | 3.60 mm | 0.14173 | 3.6000 | |||||||
2.16 mm | 0.08504 | #3-56 | 2.1600 | 0.10400 in | 0.11000 in | 60 | 27 | 0.14400 | 3.6576 | |||||||
2.17 mm | 0.08543 | #3-56 | 2.1700 | 0.10400 in | 0.11000 in | 59 | 3.70 mm | 0.14567 | 3.7000 | |||||||
44 | 0.08600 | #4-36 | 2.1844 | 0.11600 in | 0.12850 in | 81 | 26 | 0.14700 | 3.7338 | |||||||
2.19 mm | 0.08622 | #4-40 | 2.1900 | 0.11600 in | 0.12850 in | 81 | 3.75 mm | 0.14764 | 3.7500 | |||||||
2.20 mm | 0.08661 | #4-40 | 2.2000 | 0.11600 in | 0.12850 in | 78 | 25 | 0.14950 | #10-24 | 3.7973 | 0.19600 in | 0.20100 in | 75 | |||
2.21 mm | 0.08701 | #4-40 | 2.2100 | 0.11600 in | 0.12850 in | 77 | 3.80 mm | 0.14961 | 3.8000 | |||||||
2.22 mm | 0.08740 | #4-40 | 2.2200 | 0.11600 in | 0.12850 in | 76 | 24 | 0.15200 | 3.8608 | |||||||
2.23 mm | 0.08780 | #4-40 | 2.2300 | 0.11600 in | 0.12850 in | 75 | 3.90 mm | 0.15354 | 3.9000 | |||||||
2.24 mm | 0.08819 | #4-40 | 2.2400 | 0.11600 in | 0.12850 in | 73 | 23 | 0.15400 | 3.9116 | |||||||
2.25 mm | 0.08858 | #4-40 | 2.2500 | 0.11600 in | 0.12850 in | 72 | >>> 5/32″ | 0.15625 | 3.9688 | |||||||
2.26 mm | 0.08898 | #4-40 | 2.2600 | 0.11600 in | 0.12850 in | 71 | 22 | 0.15700 | 3.9878 | |||||||
43 | 0.08900 | #4-40 | 2.2606 | 0.11600 in | 0.12850 in | 71 | 4.00 mm | 0.15748 | 4.0000 | |||||||
2.27 mm | 0.08937 | #4-40 | 2.2700 | 0.11600 in | 0.12850 in | 70 | 21 | 0.15900 | #10-32 | 4.0386 | 0.1960 in | 0.2010 in | ||||
2.28 mm | 0.08976 | #4-40 | 2.2800 | 0.11600 in | 0.12850 in | 68 | 20 | 0.16100 | 4.0894 | |||||||
2.29 mm | 0.09016 | #4-40 #4-48 |
2.2900 | 0.11600 in | 0.12850 in | 67 81 |
4.10 mm | 0.16142 | 4.1000 | |||||||
2.30 mm | 0.09055 | #4-40 #4-48 |
2.3000 | 0.11600 in | 0.12850 in | 66 79 |
4.20 mm | 0.16535 | M5×0.8 | 4.2000 | 5.10 mm | 75 | ||||
2.31 mm | 0.09094 | #4-40 #4-48 |
2.3100 | 0.11600 in | 0.12850 in | 65 78 |
19 | 0.16600 | 4.2164 | |||||||
2.32 mm | 0.09134 | #4-40 #4-48 |
2.3200 | 0.11600 in | 0.12850 in | 64 76 |
4.25 mm | 0.16732 | 4.2500 | |||||||
2.33 mm | 0.09173 | #4-40 #4-48 |
2.3300 | 0.11600 in | 0.12850 in | 63 75 |
4.30 mm | 0.16929 | 4.3000 | |||||||
2.34 mm | 0.09213 | #4-40 #4-48 |
2.3400 | 0.11600 in | 0.12850 in | 61 74 |
18 | 0.16950 | 4.3053 | |||||||
2.35 mm | 0.09252 | #4-40 #4-48 |
2.3500 | 0.11600 in | 0.12850 in | 60 72 |
>>> 11/64″ | 0.17188 | 4.3656 | |||||||
42 | 0.09350 | #4-48 | 2.3749 | 0.11600 in | 0.12850 in | 69 | 17 | 0.17300 | 4.3942 | |||||||
>>> 3/32″ | 0.09375 | 2.3813 | 4.40 mm | 0.17323 | 4.4000 | |||||||||||
2.40 mm | 0.09449 | 2.4000 | 16 | 0.17700 | #12-24 | 4.4958 | 0.22100 in | 0.22800 in | 72 | |||||||
41 | 0.09600 | 2.4384 | 4.50 mm | 0.17717 | 4.5000 | |||||||||||
2.45 mm | 0.09646 | 2.4500 | 15 | 0.18000 | 4.5720 | |||||||||||
40 | 0.09800 | 2.4892 | 4.60 mm | 0.18110 | 4.6000 | |||||||||||
2.50 mm | 0.09843 | M3×0.5 | 2.5000 | 3.2 mm | 75 | 14 | 0.18200 | #12-28 | 4.6228 | |||||||
39 | 0.09950 | #5-40 | 2.5273 | 0.12850 in | 0.13600 in | 78 | 13 | 0.18500 | 4.6990 | |||||||
38 | 0.10150 | #5-40 | 2.5781 | 0.12850 in | 0.13600 in | 72 | 4.70 mm | 0.18504 | 4.7000 | |||||||
2.60 mm | 0.10236 | 2.6000 | 4.75 mm | 0.18701 | 4.7500 | |||||||||||
37 | 0.10400 | #5-44 | 2.6416 | 0.12850 in | 0.13600 in | 71 | >>> 3/16″ | 0.18750 | 4.7625 | |||||||
2.70 mm | 0.10630 | 2.7000 | 4.80 mm | 0.18898 | 4.8000 | |||||||||||
36 | 0.10650 | #6-32 | 2.7051 | 0.14400 in | 0.14950 in | 77 | 12 | 0.18900 | 4.8006 | |||||||
2.75 mm | 0.10827 | 2.7500 | 11 | 0.19100 | 4.8514 | |||||||||||
>>> 7/64″ | 0.10938 | 2.7781 | 4.90 mm | 0.19291 | 4.9000 | |||||||||||
35 | 0.11000 | 2.7940 | 10 | 0.19350 | 4.9149 | |||||||||||
2.80 mm | 0.11024 | 2.8000 | 9 | 0.19600 | 4.9784 | |||||||||||
34 | 0.11100 | 2.8194 | 5.00 mm | 0.19685 | M6×1.0 | 5.0000 | 6.10 mm | 75 | ||||||||
33 | 0.11300 | #6-40 | 2.8702 | 0.1563 in | 8 | 0.19900 | 5.0546 | |||||||||
2.90 mm | 0.11417 | M3.5×0.6 | 2.9000 | 5.10 mm | 0.20079 | 5.1000 | ||||||||||
32 | 0.11600 | 2.9464 | 7 | 0.20100 | 1⁄4-20 | 5.1054 | 0.25700 in | 0.26600 in | 72 | |||||||
3.00 mm | 0.11811 | 3.0000 | >>> 13/64″ | 0.20313 | 5.1594 | |||||||||||
31 | 0.12000 | #6-48 | 3.0480 | 6 | 0.20400 | 5.1816 | ||||||||||
3.10 mm | 0.12205 | 3.1000 | 5.20 mm | 0.20472 | M6×0.75 | 5.2000 | 6.10 mm | 60 | ||||||||
>>> 1/8″ | 0.12500 | 3.1750 | 5 | 0.20550 | 5.2197 | |||||||||||
3.20 mm | 0.12598 | 3.2000 | 5.25 mm | 0.20669 | 5.2500 | |||||||||||
3.25 mm | 0.12795 | 3.2500 | 5.30 mm | 0.20866 | 5.3000 | |||||||||||
30 | 0.12850 | 3.2639 | 4 | 0.20900 | 5.3086 | |||||||||||
Drill Size | Decimal Equiv. | Tap size | MM Equivalent | Clearance Close Fit | Clearance Free Fit | Thread Depth (%) |
Drill Size | Decimal Equiv. | Tap size | MM Equivalent | Clearance Close Fit | Clearance Free Fit | Thread Depth (%) |
|||
5.40 mm | 0.21260 | 5.4000 | P | 0.32300 | 8.2042 | |||||||||||
3 | 0.21300 | 1⁄4-28 | 5.4102 | 0.25700 in | 0.26600 in | 80 | 8.25 mm | 0.32480 | 8.2500 | |||||||
5.50 mm | 0.21654 | 1⁄4-28 | 5.5000 | 0.25700 in | 0.26600 in | 70 | 8.30 mm | 0.32677 | 8.3000 | |||||||
>>> 7/32″ | 0.21875 | 1⁄4-28 1⁄4-32 (1⁄4-32 UNEF for glow plugs) |
5.5563 | 0.25700 in | 0.26600 in | 68 | >>> 21/64″ | 0.32813 | 8.3344 | |||||||
5.60 mm | 0.22047 | 1⁄4-28 | 5.6000 | 0.25700 in | 0.26600 in | 63 | 8.40 mm | 0.33071 | 8.4000 | |||||||
2 | 0.22100 | 1⁄4-28 | 5.6134 | 0.25700 in | 0.26600 in | 60 | Q | 0.33200 | 3⁄8-24 | 8.4328 | 0.38600 in | 0.39700 in | 79 | |||
5.70 mm | 0.22441 | 5.7000 | 8.50 mm | 0.33465 | M10×1.5 | 8.5000 | ||||||||||
5.75 mm | 0.22638 | 5.7500 | 8.60 mm | 0.33858 | 8.6000 | |||||||||||
1 | 0.22800 | 5.7912 | R | 0.33900 | 8.6106 | |||||||||||
5.80 mm | 0.22835 | 5.8000 | 8.70 mm | 0.34252 | 8.7000 | |||||||||||
5.90 mm | 0.23228 | 5.9000 | >>> 11/32″ | 0.34375 | NPT 1/8×27 | 8.7313 | ||||||||||
A | 0.23400 | 5.9436 | 8.75 mm | 0.34449 | M10×1.25 | 8.7500 | ||||||||||
>>> 15/64″ | 0.23438 | 5.9531 | 8.80 mm | 0.34646 | 8.8000 | |||||||||||
6.00 mm | 0.23622 | 6.0000 | S | 0.34800 | 8.8392 | |||||||||||
B | 0.23800 | 6.0452 | 8.90 mm | 0.35039 | 8.9000 | |||||||||||
6.10 mm | 0.24016 | M7×1.0 | 6.1000 | 75 | 9.00 mm | 0.35433 | M10×1.0 (spark plug) |
9.0000 | ||||||||
C | 0.24200 | 6.1468 | T | 0.35800 | 9.0932 | |||||||||||
6.20 mm | 0.24409 | 6.2000 | 9.10 mm | 0.35827 | 9.1000 | |||||||||||
D | 0.24600 | 6.2484 | >>> 23/64″ | 0.35938 | 9.1281 | |||||||||||
6.25 mm | 0.24606 | 6.2500 | 9.20 mm | 0.36220 | 9.2000 | |||||||||||
6.30 mm | 0.24803 | 6.3000 | 9.25 mm | 0.36417 | 9.2500 | |||||||||||
6.35 mm | 0.25000 | 6.3500 | 9.30 mm | 0.36614 | 9.3000 | |||||||||||
>>> 1/4″- E | U | 0.36800 | 7⁄16-14 | 9.3472 | 0.45310 in | 0.46870 in | 75 | |||||||||
9.40 mm | 0.37008 | 9.4000 | ||||||||||||||
6.40 mm | 0.25197 | 6.4000 | 9.50 mm | 0.37402 | 9.5000 | |||||||||||
6.50 mm | 0.25591 | M7×0.5 | 6.5000 | >>> 3/8″ | 0.37500 | 9.5250 | ||||||||||
F | 0.25700 | 5⁄16-18 | 6.5278 | 0.32300 in | 0.33200 in | 77 | V | 0.37700 | 9.5758 | |||||||
6.60 mm | 0.25984 | 6.6000 | 9.60 mm | 0.37795 | 9.6000 | |||||||||||
G | 0.26100 | 6.6294 | 9.70 mm | 0.38189 | 9.7000 | |||||||||||
6.70 mm | 0.26378 | 6.7000 | 9.75 mm | 0.38386 | 9.7500 | |||||||||||
>>> 17/64″ | 0.26563 | 5⁄16-18 | 6.7469 | 74 | 9.80 mm | 0.38583 | 9.8000 | |||||||||
6.75 mm | 0.26575 | 6.7500 | W | 0.38600 | 9.8044 | |||||||||||
H | 0.26600 | 6.7564 | 9.90 mm | 0.38976 | 9.9000 | |||||||||||
6.80 mm | 0.26772 | 6.8000 | >>> 25/64″ | 0.39063 | 7⁄16-20 | 9.9219 | 0.45313 in | 0.46785 in | 72 | |||||||
6.90 mm | 0.27165 | M8×1.25 | 6.9000 | 75 | 10.00 mm | 0.39370 | 10.0000 | |||||||||
I | 0.27200 | 5⁄16-24 | 6.9088 | 0.32300 in | 0.33200 in | 75 | X | 0.39700 | 10.0838 | |||||||
7.00 mm | 0.27559 | 7.0000 | Y | 0.40400 | 10.2616 | |||||||||||
J | 0.27700 | 5⁄16-18 | 7.0358 | 50 | >>> 13/32″ | 0.40625 | 7⁄16-40 | 10.3188 | ||||||||
7.10 mm | 0.27953 | M8×1.0 | 7.1000 | 75 | Z | 0.41300 | 10.4902 | |||||||||
K | 0.28100 | 7.1374 | 10.50 mm | 0.41339 | M12×1.75 | 10.5000 | 75 | |||||||||
>>> 9/32″ | 0.28125 | 5⁄16-32 | 7.1438 | 10.7 mm | 0.42126 | M12×1.5 | 10.7000 | 75 | ||||||||
7.20 mm | 0.28346 | 7.2000 | >>> 27/64″ | 0.42188 | 1⁄2-13 | 10.7156 | 0.51563 in | 0.53125 in | 78 | |||||||
7.25 mm | 0.28543 | 7.2500 | 10.9 mm | 0.42913 | M12×1.25 (spark plug) |
10.9000 | ||||||||||
7.30 mm | 0.28740 | 7.3000 | 11.00 mm | 0.43307 | 11.0000 | |||||||||||
L | 0.29000 | 7.3660 | >>> 7/16″ | 0.43750 | NPT 1/4×18 | 11.1125 | ||||||||||
7.40 mm | 0.29134 | 7.4000 | 11.50 mm | 0.45276 | 11.5000 | |||||||||||
M | 0.29500 | 7.4930 | >>> 29/64″ | 0.45313 | 1⁄2-20 | 11.5094 | 0.51563 in | 0.53125 in | 72 | |||||||
7.50 mm | 0.29528 | 7.5000 | >>> 15/32″ | 0.46875 | 9⁄16-12 | 11.9063 | 0.56250 in | 87 | ||||||||
>>> 19/64″ | 0.29688 | 7.5406 | 12.00 mm | 0.47244 | 12.0000 | |||||||||||
7.60 mm | 0.29921 | 7.6000 | 12.2 mm | 0.48031 | M14×2 | 12.2000 | 75 | |||||||||
N | 0.30200 | 7.6708 | >>> 31/64″ | 0.48438 | 9⁄16-12 | 12.3031 | 0.56250 in | 68 | ||||||||
7.70 mm | 0.30315 | 7.7000 | 12.50 mm | 0.49213 | 12.5000 | |||||||||||
7.75 mm | 0.30512 | 7.7500 | 12.7 mm | 0.50000 | 9⁄16-18 | 12.7000 | 0.56250 in | 87 | ||||||||
7.80 mm | 0.30709 | 7.8000 | >>> 1/2″ | M14×1.5 | 75 | |||||||||||
7.90 mm | 0.31102 | 7.9000 | 12.8 mm | 0.50393 | M14×1.25 (spark plug) |
12.8000 | ||||||||||
>>> 5/16″ | 0.31250 | 3⁄8-16 | 7.9375 | 0.38600 in | 0.39700 in | 77 | 13.00 mm | 0.51181 | 13.0000 | |||||||
8.00 mm | 0.31496 | 8.0000 | >>> 33/64″ | 0.51563 | 9⁄16-18 | 13.0969 | 0.56250 in | 65 | ||||||||
O | 0.31600 | 8.0264 | >>> 17/32″ | 0.53125 | 5⁄8-11 | 13.4938 | 0.62500 in | 79 | ||||||||
8.10 mm | 0.31890 | 8.1000 | 13.50 mm | 0.53150 | 13.5000 | |||||||||||
8.20 mm | 0.32283 | 8.2000 | >>> 35/64″ | 0.54688 | 5⁄8-11 | 13.8906 | 0.62500 in | 66 | ||||||||
Drill Size | Decimal Equiv. | Tap size | MM Equivalent | Clearance Close Fit | Clearance Free Fit | Thread Depth (%) |
Drill Size | Decimal Equiv. | Tap size | MM Equivalent | Clearance Close Fit | Clearance Free Fit | Thread Depth (%) |
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14.00 mm | 0.55118 | 14.0000 | 26.50 mm | 1.04331 | 26.5000 | |||||||||||
14.2 mm | 0.55906 | M16×2 | 14.2000 | 75 | >>> 1-3/64″ | 1.04688 | 1 1⁄8-12 | 26.5906 | 72 | |||||||
>>> 9/16″ | 0.56250 | NTP 3/8×18 5⁄8-18 | 14.2875 | 0.62500 in | 87 | >>> 1-1/16″ | 1.06250 | 26.9875 | ||||||||
14.50 mm | 0.57087 | 14.5000 | 27.00 mm | 1.06299 | 27.0000 | |||||||||||
>>> 37/64″ | 0.57813 | 5⁄8×18 NPT 3/8×18 | 14.6844 | 0.62500 in | 65 | >>> 1-5/64″ | 1.07813 | |||||||||
14.7 mm | 0.57874 | M16×1.5 | 14.7000 | 75 | 27.50 mm | 1.08268 | 27.5000 | |||||||||
15.00 mm | 0.59055 | 15.0000 | >>> 1-3/32″ | 1.09375 | ||||||||||||
>>> 19/32″ | 0.59375 | 15.0813 | 28.00 mm | 1.10236 | 28.0000 | |||||||||||
>>> 39/64″ | 0.60938 | 15.4781 | >>> 1-7/64″ | 1.10938 | 1 1⁄4-7 | 28.1781 | 76 | |||||||||
15.50 mm | 0.61024 | 15.5000 | 28.50 mm | 1.12205 | 28.5000 | |||||||||||
>>> 5/8″ | 0.62500 | 15.8750 | >>> 1-1/8″ | 1.12500 | 1 1⁄4-7 | 28.5750 | 67 | |||||||||
16.00 mm | 0.62992 | 16.0000 | >>> 1-9/64″ | 1.14063 | ||||||||||||
>>> 41/64″ | 0.64063 | 3⁄4-10 | 16.2719 | 84 | 29.00 mm | 1.14173 | 29.0000 | |||||||||
16.50 mm | 0.64961 | 16.5000 | >>> 1-5/32″ | 1.15625 | 1 1⁄4-12 | 29.3688 | 87 | |||||||||
>>> 21/32″ | 0.65625 | 3⁄4-10 | 16.6688 | 72 | 29.50 mm | 1.16142 | 29.5000 | |||||||||
16.8 | 0.66141 | M18×1.5 (spark plug) |
16.8000 | >>> 1-11/64″ | 1.17188 | 1 1⁄4-12 | 29.7656 | 72 | ||||||||
17.00 mm | 0.66929 | 17.0000 | 30.00 mm | 1.18110 | 30.0000 | |||||||||||
>>> 43/64″ | 0.67188 | 17.0656 | >>> 1-3/16″ | 1.18750 | 1 3⁄8-6 | 30.1625 | 87 | |||||||||
>>> 11/16″ | 0.68750 | 3⁄4-16 | 17.4625 | 77 | 30.50 mm | 1.20079 | 30.5000 | |||||||||
17.50 mm | 0.68898 | 17.5000 | >>> 1-13/64″ | 1.20313 | 1 3⁄8-6 | 30.5594 | 79 | |||||||||
>>> 45/64″ | 0.70313 | 17.8594 | >>> 1-7/32″ | 1.21875 | 1 3⁄8-6 | 30.9563 | 72 | |||||||||
18.00 mm | 0.70866 | 18.0000 | 31.00 mm | 1.22047 | 31.0000 | |||||||||||
>>> 23/32″ | 0.71875 | NPT 1/2×14 | 18.2563 | >>> 1-15/64″ | 1.23438 | 1 3⁄8-6 | 31.3531 | 65 | ||||||||
18.50 mm | 0.72835 | 18.5000 | 31.50 mm | 1.24016 | 31.5000 | |||||||||||
>>> 47/64″ | 0.73438 | 18.6531 | >>> 1-1/4″ | 1.25000 | ||||||||||||
19.00 mm | 0.74803 | 19.0000 | 32.00 mm | 1.25984 | 32.0000 | |||||||||||
>>> 3/4″ | 0.75000 | NTP 1/2×14 | 19.0500 | >>> 1-17/64″ | 1.26563 | |||||||||||
>>> 49/64″ | 0.76563 | 7⁄8-9 | 19.4469 | 76 | 32.50 mm | 1.27953 | 32.5000 | |||||||||
19.50 mm | 0.76772 | 19.5000 | >>> 1-9/32″ | 1.28125 | 1 3⁄8-12 | 32.5438 | 87 | |||||||||
>>> 25/32″ | 0.78125 | 7⁄8-9 | 19.8438 | 65 | >>> 1-19/64″ | 1.29688 | 1 3⁄8-12 | 32.9406 | 72 | |||||||
20.00 mm | 0.78740 | 20.0000 | 33.00 mm | 1.29921 | 33.0000 | |||||||||||
>>> 51/64″ | 0.79688 | 7⁄8-14 | 20.2406 | 84 | >>> 1-5/16″ | 1.31250 | 1 1⁄2-6 | 33.3375 | 87 | |||||||
20.50 mm | 0.80709 | 20.5000 | 33.50 mm | 1.31890 | 33.5000 | |||||||||||
>>> 13/16″ | 0.81250 | 7⁄8-14 | 20.6375 | 67 | >>> 1-21/64″ | 1.32813 | 1 1⁄2-6 | 33.7344 | 79 | |||||||
21.00 mm | 0.82677 | 21.0000 | 34.00 mm | 1.33858 | 34.0000 | |||||||||||
>>> 53/64″ | 0.82813 | 7⁄8-18 NS (spark plug) |
21.0344 | >>> 1-11/32″ | 1.34375 | 1 1⁄2-6 | 34.1313 | 72 | ||||||||
>>> 27/32″ | 0.84375 | 21.4313 | 34.50 mm | 1.35827 | 34.5000 | |||||||||||
21.50 mm | 0.84646 | 21.5000 | >>> 1-23/64″ | 1.35938 | 1 1⁄2-6 | 34.5281 | 65 | |||||||||
>>> 55/64″ | 0.85938 | 1-8 | 21.8281 | 87 | >>> 1-3/8″ | 1.37500 | ||||||||||
22.00 mm | 0.86614 | 22.0000 | 35.00 mm | 1.37795 | 35.0000 | |||||||||||
>>> 7/8″ | 0.87500 | 1-8 | 22.2250 | 77 | >>> 1-25/64″ | 1.39063 | ||||||||||
22.50 mm | 0.88583 | 22.5000 | 35.50 mm | 1.39764 | 35.5000 | |||||||||||
>>> 57/64″ | 0.89063 | 1-8 | 22.6219 | 67 | >>> 1-13/32″ | 1.40625 | 1 1⁄2-12 | 35.7188 | 87 | |||||||
23.00 mm | 0.90551 | 23.0000 | 36.00 mm | 1.41732 | 36.0000 | |||||||||||
>>> 29/32″ | 0.90625 | 1-12 | 23.0188 | 87 | >>> 1-27/64″ | 1.42188 | 1 1⁄2-12 | 36.1156 | 72 | |||||||
>>> 59/64″ | 0.92188 | 1-14, 1-12 NPT 3/4×14 | 23.4156 | 72 84 |
36.50 mm | 1.43701 | 36.5000 | |||||||||
23.50 mm | 0.92520 | 23.5000 | ||||||||||||||
>>> 15/16″ | 0.93750 | NPT 3/4×14 1-14 | 23.8125 | 67 | ||||||||||||
24.00 mm | 0.94488 | 24.0000 | ||||||||||||||
>>> 61/64″ | 0.95313 | 24.2094 | ||||||||||||||
24.50 mm | 0.96457 | 24.5000 | ||||||||||||||
>>> 31/32″ | 0.96875 | 1 1⁄8-7 | 24.6063 | 84 | ||||||||||||
25.00 mm | 0.98425 | 25.0000 | ||||||||||||||
>>> 63/64″ | 0.98438 | 1 1⁄8-7 | 25.0031 | 76 | ||||||||||||
>>> 1″ | 1.00000 | 1 1⁄8-7 | 25.4000 | 67 | ||||||||||||
25.50 mm | 1.00394 | 25.5000 | ||||||||||||||
>>> 1-1/64″ | 1.01563 | 25.7969 | ||||||||||||||
26.00 mm | 1.02362 | 26.0000 | ||||||||||||||
>>> 1-1/32″ | 1.03125 | 1 1⁄8-12 | 26.1938 | 87 |