55 Degree Threads
|
SIZE |
TPI |
EXTERNAL |
INTERNAL |
DRILL SIZE |
DRILL SIZE |
||||
|
BSF 55 |
MAJORS |
MINORS |
CLEARANCE HOLE |
TAPPED HOLE |
|||||
| INCH | MM | INCH | MM | INCH | MM | INCH | MM | ||
| 3/16 | 32 | 0.1875 | 4.76 | 0.1475 | 3.75 | 4.90 | # 22 | 4.00 | |
| 7/32 | 28 | 0.2188 | 5.56 | 0.1730 | 4.39 | 5.70 | # 15 | 4.60 | |
| 1/4 | 26 | 0.2500 | 6.35 | 0.2000 | 5.08 | 17/64 | 6.75 | # 3 | 5.50 |
| 9/32 | 26 | 0.2800 | 7.14 | 0.2300 | 5.89 | 6.10 | |||
| 5/16 | 22 | 0.3125 | 7.94 | 0.2540 | 6.45 | 21/64 | 8.33 | 17/64 | 6.75 |
| 3/8 | 20 | 0.3750 | 9.53 | 0.3110 | 7.90 | 25/64 | 9.92 | 21/64 | 8.33 |
| 7/16 | 18 | 0.4375 | 11.11 | 0.3660 | 9.30 | 29/64 | 11.51 | 3/8 | 9.53 |
| 1/2 | 16 | 0.5000 | 12.70 | 0.4200 | 10.67 | 17/32 | 13.49 | 7/16 | 11.11 |
| 9/16 | 16 | 0.5625 | 14.29 | 0.4820 | 12.24 | 19/32 | 15.08 | 1/2 | 12.70 |
| 5/8 | 14 | 0.6250 | 15.88 | 0.5330 | 13.54 | 21/32 | 16.67 | 9/16 | 14.29 |
| 11/16 | 14 | 0.6875 | 17.46 | 0.5960 | 15.14 | 17.75 | 15.50 | ||
| 3/4 | 12 | 0.7500 | 19.05 | 0.6430 | 16.33 | 25/32 | 19.84 | 43/64 | 17.07 |
| 13/16 | 12 | 0.8100 | 20.64 | 0.7100 | 17.92 | 18.25 | |||
| 7/8 | 11 | 0.8750 | 22.23 | 0.7590 | 19.28 | 29/32 | 23.02 | 25/32 | 19.84 |
| 1 | 10 | 1.0000 | 25.40 | 0.8750 | 22.15 | 1 1/16 | 26.99 | 29/32 | 23.02 |
| 1 1/8 | 9 | 1.1250 | 28.58 | 0.9830 | 24.97 | 1 3/16 | 30.16 | 1 1/64 | 25.80 |
| 1 1/4 | 9 | 1.2500 | 31.75 | 1.1080 | 28.14 | 1 5/16 | 33.34 | 1 9/64 | 28.97 |
| 1 3/8 | 8 | 1.3750 | 34.93 | 1.2150 | 30.86 | 1 7/16 | 36.51 | 1 1/4 | 31.75 |
| 1 1/2 | 8 | 1.5000 | 38.10 | 1.3400 | 34.04 | 1 9/16 | 39.69 | 1 3/8 | 34.93 |
| 1 5/8 | 8 | 1.6300 | 41.30 | 1.4600 | 37.21 | 37.50 | |||
| 1 3/4 | 7 | 1.7500 | 44.45 | 1.5670 | 39.80 | 45.00 | 41.00 | ||
| 2 | 7 | 2.0000 | 50.80 | 1.8170 | 46.15 | 52.00 | 47.00 | ||
| 2 1/4 | 6 | 2.2500 | 57.15 | 2.0366 | 51.73 | 58.00 | 53.00 | ||
| 2 1/2 | 6 | 2.5000 | 63.50 | 2.2866 | 58.08 | 64.00 | 58.00 | ||