TW Series
Three-wire gauges for measuring screws
- ※The three-wire gauge pins are detachable from the chains.
Specifications
| Series | Tolerance | Roundness/Cylindricity | Size Variation | HRC HardnessHRC |
|---|---|---|---|---|
| TW | ±2.0μm | 0.5μm | 0.5μm | 58 HRC or greater |
| TWW | 90.6 HRA | |||
| TWZ | 89 HRA |
- (inspection results document)
How to obtain effective diameter
TW Series
| Set No. | Wires Dia (mm) |
Kind, pitch or number of thread of applied screws | Price(Yen) | ||
|---|---|---|---|---|---|
| Metric | Unify | PPT | |||
| Pitch(mm) | Number of Thread | Number of Thread | |||
| TW - 01 TW - 02 TW - 03 |
0.1155 0.1443 0.1732 |
0.2 0.25 0.3 |
- - 80 |
- - - |
20,000 |
| TW - 04 TW - 05 TW - 06 |
0.2021 0.2309 0.2598 |
0.35 0.4 0.45 |
72 64 56 |
- - - |
|
| TW - 07 TW - 08 TW - 09 |
0.2887 0.3464 0.4330 |
0.5 0.6 0.75 |
48 44.40 - |
- - - |
|
| TW - 10 TW - 11 TW - 12 |
0.5196 0.5774 0.7217 |
- 1 1.25 |
28 24 20 |
28 - - |
|
| TW - 13 TW - 14 TW - 15 |
0.7954 0.8949 1.0227 |
- 1.5 1.75 |
18 16 14 |
- - 14 |
|
| TW - 16 TW - 17 TW - 18 |
1.1547 1.1932 1.3016 |
2 - - |
13 12 11 |
- - 11 |
|
| TW - 19 TW - 20 TW - 21 |
1.4434 1.5908 1.7897 |
2.5 - 3 |
10 9 8 |
- - - |
|
| TW - 22 TW - 23 TW - 24 |
2.0454 2.3863 2.5981 |
3.5 4 4.5 |
7 6 - |
- - - |
|
| TW - 25 TW - 26 TW - 27 |
2.8868 3.1817 3.5794 |
5 5.5 - |
5 41/2 4 |
- - - |
|
| TW - 28 TW - 29 TW - 30 |
0.4041 0.4619 0.7536 |
0.7 0.8 - |
36 32 - |
- 19 |
|
| TW - 31 | 3.4641 | 6 | - | - | |
| Set No. | Combinatiuon | Price Yen |
|---|---|---|
| TW - TS | TW-01～TW-31 | 589,000 |
TWW Series
| Set No. | Wires Dia (mm) |
Kind, pitch or number of thread of applied screws | Price(Yen) | ||
|---|---|---|---|---|---|
| Metric | Unify | PPT | |||
| Pitch(mm) | Number of Thread | Number of Thread | |||
| TWW - 04 TWW - 05 TWW - 06 |
0.2021 0.2309 0.2598 |
0.35 0.4 0.45 |
72 64 56 |
- - - |
40,000 |
| TWW - 07 TWW - 08 TWW - 09 |
0.2887 0.3464 0.4330 |
0.5 0.6 0.75 |
48 44,40 - |
- - - |
|
| TWW - 10 TWW - 11 TWW - 12 |
0.5196 0.5774 0.7217 |
- 1 1.25 |
28 24 20 |
28 - - |
|
| TWW - 13 TWW - 14 TWW - 15 |
0.7954 0.8949 1.0227 |
- 1.5 1.75 |
18 16 14 |
- - 14 |
|
| TWW - 16 TWW - 17 TWW - 18 |
1.1547 1.1932 1.3016 |
2 - - |
13 12 11 |
- - 11 |
|
| TWW - 19 TWW - 20 TWW - 21 |
1.4434 1.5908 1.7897 |
2.5 - 3 |
10 9 8 |
- - - |
|
| TWW - 22 TWW - 23 TWW - 24 |
2.0454 2.3863 2.5981 |
3.5 4 4.5 |
7 6 - |
- - - |
|
| TWW - 25 TWW - 26 TWW - 27 |
2.8868 3.1817 3.5794 |
5 5.5 - |
5 41/2 4 |
- - - |
|
| TWW - 28 TWW - 29 TWW - 30 |
0.4041 0.4619 0.7536 |
0.7 0.8 - |
36 32 - |
- 19 |
|
TWZ Series
| Set No. | Wires Dia (mm) |
Kind, pitch or number of thread of applied screws | Price(Yen) | ||
|---|---|---|---|---|---|
| Metric | Unify | PPT | |||
| Pitch(mm) | Number of Thread | Number of Thread | |||
| TWZ - 04 TWZ - 05 TWZ - 06 |
0.2021 0.2309 0.2598 |
0.35 0.4 0.45 |
72 64 56 |
- - - |
40,000 |
| TWZ - 07 TWZ - 08 TWZ - 09 |
0.2887 0.3464 0.4330 |
0.5 0.6 0.75 |
48 44,40 - |
- - - |
|
| TWZ - 10 TWZ - 11 TWZ - 12 |
0.5196 0.5774 0.7217 |
- 1 1.25 |
28 24 20 |
28 - - |
|
| TWZ - 13 TWZ - 14 TWZ - 15 |
0.7954 0.8949 1.0227 |
- 1.5 1.75 |
18 16 14 |
- - 14 |
|
| TWZ - 16 TWZ - 17 TWZ - 18 |
1.1547 1.1932 1.3016 |
2 - - |
13 12 11 |
- - 11 |
|
| TWZ - 19 TWZ - 20 TWZ - 21 |
1.4434 1.5908 1.7897 |
2.5 - 3 |
10 9 8 |
- - - |
|
| TWZ - 22 TWZ - 23 TWZ - 24 |
2.0454 2.3863 2.5981 |
3.5 4 4.5 |
7 6 - |
- - - |
|
| TWZ - 25 TWZ - 26 TWZ - 27 |
2.8868 3.1817 3.5794 |
5 5.5 - |
5 41/2 4 |
- - - |
|
| TWZ - 28 TWZ - 29 TWZ - 30 |
0.4041 0.4619 0.7536 |
0.7 0.8 - |
36 32 - |
- 19 |
|
- Affix the nameplate of the three-wire gauge to a stand so that the wires hang down. Clamp the screw to be measured in a microstand and bring it into contact with the gauge.
- Place the three pingauge wires a long the grooves of the screw.
- Move the middle pingauge wire to the opposite side of the screw