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QH Ratchet Head
SKU
QH
Brand: Tohnichi
In stock
Only %1 left
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.
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.
◆ How to order
Specify “Tohnichi”, then “Model”.
Example: Tohnichi QH10D
| Model/Type | Allowable Torque [N･m] |
Outside width [mm] |
Thickness (t) [mm] |
Length (ℓ) [mm] |
Weight [kg] |
| QH6D | - | 15 | - | 25 | 0.018 |
| QH8D | - | 23 | - | 35 | 0.06 |
| QH10D | - | 26 | - | 44 | 0.1 |
| QH10D-1/4 | - | 26 | - | 44 | 0.1 |
| QH12D | - | 32 | - | 53 | 0.19 |
| QH15D | - | 37.5 | - | 63 | 0.3 |
| QH15D-3/8 | 100 | 37.5 | - | 63 | - |
| QH19D | - | 40 | - | 80 | 0.45 |
| QH22D | - | 51 | - | 100 | 0.84 |
| QH22D-1/2 | 280 | 51 | - | 100 | - |
| QH27D | - | 70 | - | 125 | 1.63 |
| QH32D | - | 74 | - | 160 | 2.29 |
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