
| Camera tripod mounting screws | Unit: m |
| Size Minor Diameter | Recommended Hole Size |
| Max. Min. | |
| 1/4 - 20 5.267 4.975 | 5.19 |
SP
28˚ 2.91 -3.3
SL
PO
ST
Automotive tire valve screws Unit: mm Bicycle tire valve screws Unit: mm
| Size | | Minor D Max. | iameter Min. | Recommended Hole Size |
| 5 | V | 1 | 4.801 | 4.597 | 4.75 |
| 8 | V | 1 | 7.239 | 7.036 | 7.19 |
| 8 | V | 2 | 7.035 | 6.782 | 6.97 |
| 9 | V | 1 | 8.865 | 8.661 | 8.81 |
| 10 | V | 1 | 8.900 | 8.750 | 8.86 |
| 10 | V | 2 | 9.550 | 9.350 | 9.50 |
| 11 | V | 1 | 10.033 | 9.729 | 9.96 |
| 12 | V | 1 | 11.379 | 11.176 | 11.33 |
| 13 | V | 1 | 11.608 | 11.328 | 11.54 |
| 13 | V | 2 | 12.039 | 11.837 | 11.99 |
| 15 | V | 1 | 13.950 | 13.750 | 13.90 |
| 16 | V | 1 | 15.088 | 14.859 | 15.03 |
| 17 | V | 1 | 15.950 | 15.750 | 15.90 |
| 17 | V | 2 | 16.560 | 16.307 | 16.50 |
| 17 | V | 3 | 16.103 | 15.748 | 16.01 |
| 19 | V | 1 | 17.678 | 17.323 | 17.59 |
| 20 | V | 1 | 19.450 | 19.250 | 19.40 |
| Size | | | Minor D Max. | iameter Min. | Recommended Hole Size |
| CTV | 5 | - | 36 | 4.732 | 4.630 | 4.71 |
| CTV | 5 | - | 24 | 4.214 | 3.954 | 4.15 |
| CTV | 8 | - | 32 | 7.192 | 7.040 | 7.15 |
| CTV | 8 | - | 30 | 7.344 | 7.183 | 7.30 |
| 5 | V | 2 | 4.600 | 4.400 | 4.55 |
| 6 | V | 1 | 5.540 | 5.440 | 5.52 |
| Size | | Minor D Max. | iameter Min. | Recommended Hole Size | HAND TAPS |
| CTC | 19 - | 16 | 18.208 | 17.808 | 18.11 | |
| CTC | 25 - | 16 | 24.508 | 24.108 | 24.41 | |
| CTC | 31 - | 16 | 30.908 | 30.508 | 30.81 | EG (STI) |
| CTC | 39 - | 16 | 37.208 | 36.808 | 37.11 | |
| CTC | 51 - | 16 | 49.908 | 49.508 | 49.81 | |
| CTC | 63 - | 16 | 62.608 | 62.208 | 62.51 | |
| CTC | 75 - | 16 | 75.308 | 74.908 | 75.21 | SPECIAL |
CTC 75 - 16 75.308 74.908 75.21 THREADS,
Bicycle screws general (BC) Unit: mm GAUGES
| Size | | Minor D Max. | iameter Min. | Recommended Hole Size |
| BC | 5/16 - | 26 | 7.16 | 7.06 | 7.13 |
| BC | 3/8 - | 26 | 8.75 | 8.65 | 8.73 |
| BC | 7/16 - | 26 | 10.33 | 10.23 | 10.31 |
| BC | 1/2 - | 20 | 11.66 | 11.55 | 11.63 |
| BC | 9/16 - | 20 | 13.25 | 13.14 | 13.23 |
| BC | 5/8 - | 20 | 14.84 | 14.73 | 14.81 |
| BC | 11/16 - | 24 | 16.59 | 16.48 | 16.57 |
| BC | 3/4 - | 30 | 18.40 | 18.29 | 18.37 |
| BC | 31/32 - | 30 | 23.96 | 23.85 | 23.94 |
| BC | 1 - | 24 | 24.56 | 24.44 | 24.53 |
| BC | 1.29 - | 24 | 31.95 | 31.82 | 31.92 |
| BC | 1.37 - | 24 | 33.98 | 33.85 | 33.95 |
| BC | 1 7/16 - | 24 | 35.69 | 35.56 | 35.66 |
| BC | 1.45 - | 24 | 36.01 | 35.88 | 35.98 |
| BC | 1 9/16 - | 24 | 38.87 | 38.74 | 38.84 |
| Size | | | Minor D Max. | iameter Min. | Recommended Hole Size | THREAD MILLS |
| CTG | 16 | - | 14 | 19.522 | 19.022 | 19.40 | |
| CTG | 22 | - | 14 | 25.008 | 24.508 | 24.88 | DIES |
| CTG | 28 | - | 11 | 31.361 | 30.761 | 31.21 | |
| CTG | 36 | - | 11 | 40.022 | 39.422 | 39.87 | |
| CTG | 42 | - | 11 | 45.915 | 45.315 | 45.77 | |
| CTG | 54 | - | 11 | 57.826 | 57.126 | 57.65 | CENTER |
| CTG | 70 | - | 11 | 73.396 | 72.696 | 73.22 | DRILLS |
| CTG | 82 | - | 11 | 86.096 | 85.396 | 85.92 | |
| CTG | 92 | - | 11 | 98.542 | 97.842 | 98.37 | |
| CTG | 104 | - | 11 | 111.242 | 110.542 | 111.07 | |