| # | # 0-80 UNF: basic major diameter: | 0.0600
|
|---|
| 1 | ............basic pitch diameter: | 0.0519 |
| 2 | ............external minor thread dia.: | 0.0447 |
| 3 | ............internal minor thread dia.: | 0.0465 |
| 4 | ............tap drill size: 3/64 | 0.0469 |
| 5 | . close fit clearance hole drill: #52 | 0.0635 |
| 6 | . free fit clearance hole drill: #50 | 0.0700 |
| 7 | # 1-64 UNC: basic major diameter: | 0.0730 |
| 8 | ............basic pitch diameter: | 0.0629 |
| 9 | ............external minor thread dia.: | 0.0538 |
| 10 | ............internal minor thread dia.: | 0.0561 |
| 11 | ............tap drill size: #53 | 0.0595 |
| 12 | . close fit clearance hole drill: #48 | 0.0760 |
| 13 | . free fit clearance hole drill: #46 | 0.0810 |
| 14 | # 1-72 UNF: basic major diameter: | 0.0730 |
| 15 | ............basic pitch diameter: | 0.0640 |
| 16 | ............external minor thread dia.: | 0.0560 |
| 17 | ............internal minor thread dia.: | 0.0580 |
| 18 | ............tap drill size: #53 | 0.0595 |
| 19 | . close fit clearance hole drill: #48 | 0.0760 |
| 20 | . free fit clearance hole drill: #46 | 0.0810 |
| 21 | # 2-56 UNC: basic major diameter: | 0.0860 |
| 22 | ............basic pitch diameter: | 0.0744 |
| 23 | ............external minor thread dia.: | 0.0641 |
| 24 | ............internal minor thread dia.: | 0.0667 |
| 25 | ............tap drill size: #50 | 0.0700 |
| 26 | . close fit clearance hole drill: #43 | 0.0890 |
| 27 | . free fit clearance hole drill: #41 | 0.0960 |
| 28 | # 2-64 UNF: basic major diameter: | 0.0860 |
| 29 | ............basic pitch diameter: | 0.0759 |
| 30 | ............external minor thread dia.: | 0.0668 |
| 31 | ............internal minor thread dia.: | 0.0691 |
| 32 | ............tap drill size: #50 | 0.0700 |
| 33 | . close fit clearance hole drill: #43 | 0.0890 |
| 34 | . free fit clearance hole drill: #41 | 0.0960 |
| 35 | # 3-48 UNC: basic major diameter: | 0.0990 |
| 36 | ............basic pitch diameter: | 0.0855 |
| 37 | ............external minor thread dia.: | 0.0734 |
| 38 | ............internal minor thread dia.: | 0.0764 |
| 39 | ............tap drill size: #47 | 0.0785 |
| 40 | . close fit clearance hole drill: #37 | 0.1040 |
| 41 | . free fit clearance hole drill: #35 | 0.1100 |
| 42 | # 3-56 UNF: basic major diameter: | 0.0990 |
| 43 | ............basic pitch diameter: | 0.0874 |
| 44 | ............external minor thread dia.: | 0.0771 |
| 45 | ............internal minor thread dia.: | 0.0797 |
| 46 | ............tap drill size: #45 | 0.0820 |
| 47 | . close fit clearance hole drill: #37 | 0.1040 |
| 48 | . free fit clearance hole drill: #35 | 0.1100 |
| 49 | # 4-40 UNC: basic major diameter: | 0.1120 |
| 50 | ............basic pitch diameter: | 0.0958 |
| 51 | ............external minor thread dia.: | 0.0813 |
| 52 | ............internal minor thread dia.: | 0.0849 |
| 53 | ............tap drill size: #43 | 0.0890 |
| 54 | . close fit clearance hole drill: #32 | 0.1160 |
| 55 | . free fit clearance hole drill: #30 | 0.1285 |
| 56 | # 4-48 UNF: basic major diameter: | 0.1120 |
| 57 | ............basic pitch diameter: | 0.0985 |
| 58 | ............external minor thread dia.: | 0.0864 |
| 59 | ............internal minor thread dia.: | 0.0894 |
| 60 | ............tap drill size: #42 | 0.0935 |
| 61 | . close fit clearance hole drill: #32 | 0.1160 |
| 62 | . free fit clearance hole drill: #30 | 0.1285 |
| 63 | # 5-40 UNC: basic major diameter: | 0.1250 |
| 64 | ............basic pitch diameter: | 0.1088 |
| 65 | ............external minor thread dia.: | 0.0943 |
| 66 | ............internal minor thread dia.: | 0.0979 |
| 67 | ............tap drill size: #38 | 0.1015 |
| 68 | . close fit clearance hole drill: #30 | 0.1285 |
| 69 | . free fit clearance hole drill: #29 | 0.1360 |
| 70 | # 5-44 UNF: basic major diameter: | 0.1250 |
| 71 | ............basic pitch diameter: | 0.1102 |
| 72 | ............external minor thread dia.: | 0.0971 |
| 73 | ............internal minor thread dia.: | 0.1004 |
| 74 | ............tap drill size: #37 | 0.1040 |
| 75 | . close fit clearance hole drill: #30 | 0.1285 |
| 76 | . free fit clearance hole drill: #29 | 0.1360 |
| 77 | # 6-32 UNC: basic major diameter: | 0.1380 |
| 78 | ............basic pitch diameter: | 0.1177 |
| 79 | ............external minor thread dia.: | 0.0997 |
| 80 | ............internal minor thread dia.: | 0.1042 |
| 81 | ............tap drill size: #36 | 0.1065 |
| 82 | . close fit clearance hole drill: #27 | 0.1440 |
| 83 | . free fit clearance hole drill: #25 | 0.1495 |
| 84 | # 6-40 UNF: basic major diameter: | 0.1380 |
| 85 | ............basic pitch diameter: | 0.1218 |
| 86 | ............external minor thread dia.: | 0.1073 |
| 87 | ............internal minor thread dia.: | 0.1109 |
| 88 | ............tap drill size: #33 | 0.1130 |
| 89 | . close fit clearance hole drill: #27 | 0.1440 |
| 90 | . free fit clearance hole drill: #25 | 0.1495 |
| 91 | # 8-32 UNC: basic major diameter: | 0.1640 |
| 92 | ............basic pitch diameter: | 0.1437 |
| 93 | ............external minor thread dia.: | 0.1257 |
| 94 | ............internal minor thread dia.: | 0.1302 |
| 95 | ............tap drill size: #29 | 0.1360 |
| 96 | . close fit clearance hole drill: #18 | 0.1695 |
| 97 | . free fit clearance hole drill: #16 | 0.1770 |
| 98 | # 8-36 UNF: basic major diameter: | 0.1640 |
| 99 | ............basic pitch diameter: | 0.1460 |
| 100 | ............external minor thread dia.: | 0.1299 |
| 101 | ............internal minor thread dia.: | 0.1339 |
| 102 | ............tap drill size: #29 | 0.1360 |
| 103 | . close fit clearance hole drill: #18 | 0.1695 |
| 104 | . free fit clearance hole drill: #16 | 0.1770 |
| 105 | #10-24 UNC: basic major diameter: | 0.1900 |
| 106 | ............basic pitch diameter: | 0.1629 |
| 107 | ............external minor thread dia.: | 0.1389 |
| 108 | ............internal minor thread dia.: | 0.1449 |
| 109 | ............tap drill size: #25 | 0.1495 |
| 110 | . close fit clearance hole drill: #9 | 0.1960 |
| 111 | . free fit clearance hole drill: #7 | 0.2010 |
| 112 | #10-32 UNF: basic major diameter: | 0.1900 |
| 113 | ............basic pitch diameter: | 0.1697 |
| 114 | ............external minor thread dia.: | 0.1517 |
| 115 | ............internal minor thread dia.: | 0.1562 |
| 116 | ............tap drill size: #21 | 0.1590 |
| 117 | . close fit clearance hole drill: #9 | 0.1960 |
| 118 | . free fit clearance hole drill: #7 | 0.2010 |
| 119 | #12-24 UNC: basic major diameter: | 0.2160 |
| 120 | ............basic pitch diameter: | 0.1889 |
| 121 | ............external minor thread dia.: | 0.1649 |
| 122 | ............internal minor thread dia.: | 0.1709 |
| 123 | ............tap drill size: #16 | 0.1770 |
| 124 | . close fit clearance hole drill: #2 | 0.2210 |
| 125 | . free fit clearance hole drill: #1 | 0.2280 |
| 126 | #12-28 UNF: basic major diameter: | 0.2160 |
| 127 | ............basic pitch diameter: | 0.1928 |
| 128 | ............external minor thread dia.: | 0.1722 |
| 129 | ............internal minor thread dia.: | 0.1773 |
| 130 | ............tap drill size: #14 | 0.1820 |
| 131 | . close fit clearance hole drill: #2 | 0.2210 |
| 132 | . free fit clearance hole drill: #1 | 0.2280 |
| 133 | #1/4-20 UNC: basic major diameter: | 0.2500 |
| 134 | ............basic pitch diameter: | 0.2175 |
| 135 | ............external minor thread dia.: | 0.1887 |
| 136 | ............internal minor thread dia.: | 0.1959 |
| 137 | ............tap drill size: #7 | 0.2010 |
| 138 | . close fit clearance hole drill: #F | 0.2570 |
| 139 | . free fit clearance hole drill: #H | 0.2660 |
| 140 | #1/4-28 UNF: basic major diameter: | 0.2500 |
| 141 | ............basic pitch diameter: | 0.2268 |
| 142 | ............external minor thread dia.: | 0.2062 |
| 143 | ............internal minor thread dia.: | 0.2113 |
| 144 | ............tap drill size: #3 | 0.2130 |
| 145 | . close fit clearance hole drill: #F | 0.2570 |
| 146 | . free fit clearance hole drill: #H | 0.2660 |
| 147 | #5/16-18 UNC: basic major diameter: | 0.3125 |
| 148 | ............basic pitch diameter: | 0.2764 |
| 149 | ............external minor thread dia.: | 0.2443 |
| 150 | ............internal minor thread dia.: | 0.2524 |
| 151 | ............tap drill size: #F | 0.2570 |
| 152 | . close fit clearance hole drill: #P | 0.3230 |
| 153 | . free fit clearance hole drill: #Q | 0.3320 |
| 154 | #5/16-24 UNF: basic major diameter: | 0.3125 |
| 155 | ............basic pitch diameter: | 0.2854 |
| 156 | ............external minor thread dia.: | 0.2614 |
| 157 | ............internal minor thread dia.: | 0.2674 |
| 158 | ............tap drill size: #I | 0.2720 |
| 159 | . close fit clearance hole drill: #P | 0.3230 |
| 160 | . free fit clearance hole drill: #Q | 0.3320 |
| 161 | #3/8-16 UNC: basic major diameter: | 0.3750 |
| 162 | ............basic pitch diameter: | 0.3344 |
| 163 | ............external minor thread dia.: | 0.2983 |
| 164 | ............internal minor thread dia.: | 0.3073 |
| 165 | ............tap drill size: 5/16 | 0.3125 |
| 166 | . close fit clearance hole drill: #W | 0.3860 |
| 167 | . free fit clearance hole drill: #X | 0.3970 |
| 168 | #3/8-24 UNF: basic major diameter: | 0.3750 |
| 169 | ............basic pitch diameter: | 0.3479 |
| 170 | ............external minor thread dia.: | 0.3239 |
| 171 | ............internal minor thread dia.: | 0.3299 |
| 172 | ............tap drill size: #Q | 0.3320 |
| 173 | . close fit clearance hole drill: #W | 0.3860 |
| 174 | . free fit clearance hole drill: #X | 0.3970 |
| 175 | #7/16-14 UNC: basic major diameter: | 0.4375 |
| 176 | ............basic pitch diameter: | 0.3911 |
| 177 | ............external minor thread dia.: | 0.3499 |
| 178 | ............internal minor thread dia.: | 0.3602 |
| 179 | ............tap drill size: #U | 0.3680 |
| 180 | . close fit clearance hole drill: 29/64 | 0.4531 |
| 181 | . free fit clearance hole drill: 15/32 | 0.4687 |
| 182 | #7/16-20 UNF: basic major diameter: | 0.4375 |
| 183 | ............basic pitch diameter: | 0.4050 |
| 184 | ............external minor thread dia.: | 0.3762 |
| 185 | ............internal minor thread dia.: | 0.3834 |
| 186 | ............tap drill size: 25/64 | 0.3906 |
| 187 | . close fit clearance hole drill: 29/64 | 0.4531 |
| 188 | . free fit clearance hole drill: 15/32 | 0.4687 |
| 189 | #1/2-13 UNC: basic major diameter: | 0.5000 |
| 190 | ............basic pitch diameter: | 0.4500 |
| 191 | ............external minor thread dia.: | 0.4056 |
| 192 | ............internal minor thread dia.: | 0.4167 |
| 193 | ............tap drill size: 27/64 | 0.4219 |
| 194 | . close fit clearance hole drill: 33/64 | 0.5156 |
| 195 | . free fit clearance hole drill: 17/32 | 0.5312 |
| 196 | #1/2-20 UNF: basic major diameter: | 0.5000 |
| 197 | ............basic pitch diameter: | 0.4675 |
| 198 | ............external minor thread dia.: | 0.4387 |
| 199 | ............internal minor thread dia.: | 0.4459 |
| 200 | ............tap drill size: 29/64 | 0.4531 |
| 201 | . close fit clearance hole drill: 33/64 | 0.5156 |
| 202 | . free fit clearance hole drill: 17/32 | 0.5312
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