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Use accurate torque controls to improve quality! Case examples can be found in torque handbook 10
GLOBAL HOMEHOME > Products > Accessories > Interchangeable Head
Interchangeable Head
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Interchangeable Head
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Interchangeable Bit
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Interchangeable Socket
Search for interchangeable heads
You can also perform a product search by entering the model and width across flats. After entering items, click the "Search Product" button.
* Note: Prices are those listed for sale in Japan.
QH Ratchet Head
QH ratchet heads have a small tightening radius to facilitate effective tightening in cramped areas. The square drive QH10D-1/4, QH15D-3/8 and QH22D-1/2 models are one size smaller than the regular models, so their sockets are cheaper.
◆ How to order
Specify “Tohnichi”, then “Model”.
Example: Tohnichi QH10D
Note 1: For models with a square drive 25.4mm or larger, use with a through-hole socket.
Note 2: Use QH15D-3/8 and QH22D-1/2 at no more than the permissible torque (Tmax).
Note 3: See here for square drive dimensions.
Note 2: Use QH15D-3/8 and QH22D-1/2 at no more than the permissible torque (Tmax).
Note 3: See here for square drive dimensions.
Ask for inventory status and price.
| Model/Type | Allowable Torque [N･m] |
Outside width [mm] |
Thickness (t) [mm] |
Length (ℓ) [mm] |
Weight [kg] |
Compliant models | JAN code | Inventory | Prices |
|---|---|---|---|---|---|---|---|---|---|
| QH6D | 5 | 15 | - | 25 | 0.018 |
Coupling is possible if the Tohnichi interchangeable head torque wrench and interchangeable head dimensions are the same.  Details |
4580135821665 | Please contact us. | |
| QH8D | 15 | 23 | - | 35 | 0.06 |
Coupling is possible if the Tohnichi interchangeable head torque wrench and interchangeable head dimensions are the same.  Details |
4562135121266 | Please contact us. | |
| QH10D | 25 | 26 | - | 44 | 0.1 |
Coupling is possible if the Tohnichi interchangeable head torque wrench and interchangeable head dimensions are the same.  Details |
4562135121273 | Please contact us. | |
| QH10D-1/4 | 25 | 26 | - | 44 | 0.1 |
Coupling is possible if the Tohnichi interchangeable head torque wrench and interchangeable head dimensions are the same. Details |
4571141274798 | Please contact us. | |
| QH12D | 70 | 32 | - | 53 | 0.19 |
Coupling is possible if the Tohnichi interchangeable head torque wrench and interchangeable head dimensions are the same.  Details |
4562135121303 | Please contact us. | |
| QH15D | 140 | 37.5 | - | 63 | 0.3 |
Coupling is possible if the Tohnichi interchangeable head torque wrench and interchangeable head dimensions are the same.  Details |
4562135121327 | Please contact us. | |
| QH15D-3/8 | 100 | 37.5 | - | 63 | - |
Coupling is possible if the Tohnichi interchangeable head torque wrench and interchangeable head dimensions are the same. Details |
4571141274644 | Please contact us. | |
| QH19D | 200 | 40 | - | 80 | 0.45 |
Coupling is possible if the Tohnichi interchangeable head torque wrench and interchangeable head dimensions are the same.  Details |
4562135121358 | Please contact us. | |
| QH22D | 500 | 51 | - | 100 | 0.84 |
Coupling is possible if the Tohnichi interchangeable head torque wrench and interchangeable head dimensions are the same.  Details |
4562135121242 | Please contact us. | |
| QH22D-1/2 | 280 | 51 | - | 100 | - |
Coupling is possible if the Tohnichi interchangeable head torque wrench and interchangeable head dimensions are the same. Details |
4571141274897 | Please contact us. | |
| QH27D | 750 | 70 | - | 125 | 1.63 |
Coupling is possible if the Tohnichi interchangeable head torque wrench and interchangeable head dimensions are the same.  Details |
4562135126032 | Please contact us. | |
| QH32D | 1200 | 74 | - | 160 | 2.29 |
Coupling is possible if the Tohnichi interchangeable head torque wrench and interchangeable head dimensions are the same.  Details |
4562135121259 | Please contact us. | |
Use accurate torque controls to improve quality! Case examples can be found in torque handbook 10
