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Screw Thread Inserts
TAP
SIZE |
ALUMINUM |
STEEL, PLASTIC, MAGNESIUM |
TAP
DRILL
SIZE |
DECIMAL
EQUIV. OF
TAP DRILL
INCHES |
MINOR DIA.
LIMITS
(AFTER TAPPING) |
TAP
DRILL
SIZE |
DECIMAL
EQUIV. OF
TAP DRILL
INCHES |
MINOR DIA.
LIMITS
(AFTER TAPPING) |
| MIN. |
MAX. |
MIN. |
MAX. |
| 4 - 40 |
#31 |
.1200 |
.116 |
.121 |
#31 |
.1200 |
.119 |
.124 |
| 5 - 40 |
#30 |
.1285 |
.128 |
.133 |
#29 |
.1360 |
.131 |
.136 |
| 6 - 32 |
#25 |
.1495 |
.144 |
.150 |
#25 |
.1495 |
.148 |
.154 |
| 6 - 40 |
#26 |
.1470 |
.144 |
.149 |
#25 |
.1495 |
.148 |
.153 |
| 8 - 32 |
#17 |
.1730 |
.170 |
.176 |
#16 |
.1770 |
.174 |
.180 |
| 10 - 24 |
13/64 |
.2031 |
.199 |
.205 |
#5 |
.2055 |
.203 |
.209 |
| 10 -32 |
#7 |
.2010 |
.196 |
.202 |
13/64 |
.2031 |
.200 |
.206 |
| 12 - 24 |
#2 |
.2210 |
.221 |
.227 |
#1 |
.2280 |
.225 |
.231 |
| 1/4 - 20 |
17/64 |
.2656 |
.261 |
.267 |
17/64 |
.2656 |
.265 |
.271 |
| 1/4 - 28 |
G |
.2610 |
.257 |
.264 |
17/64 |
.2656 |
.261 |
.268 |
| 5/16 - 18 |
Q |
.3320 |
.328 |
.334 |
Q |
.3320 |
.331 |
.337 |
| 5/16 - 24 |
21/64 |
.3281 |
.323 |
.330 |
Q |
.3320 |
.327 |
.334 |
| 3/8 - 16 |
X |
.3970 |
.390 |
.398 |
X |
.3970 |
.396 |
.402 |
| 3/8 - 24 |
25/64 |
.3906 |
.285 |
.392 |
25/64 |
.3906 |
.389 |
.396 |
| 7/16 - 14 |
29/64 |
.4531 |
.453 |
.463 |
15/32 |
.4687 |
.461 |
.471 |
| 7/16 - 20 |
29/64 |
.4531 |
.450 |
.458 |
29/64 |
.4531 |
.453 |
.461 |
| 1/2 - 13 |
33/64 |
.5156 |
.515 |
.525 |
17/32 |
.5312 |
.523 |
.533 |
| 1/2 - 20 |
33/64 |
.5156 |
.513 |
.522 |
33/64 |
.5156 |
.515 |
.524 |
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