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title: Tools International - Locking C Mandrels
description: Specifications, Assembly, and Components for the C Series Lock Mandrels.
image: https://www.tools-int.com/hubfs/Locking%20C%20Mandrel.png
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# Locking "C" Mandrel

#### Tools International

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#### Description

#### Specifications

#### Assembly

#### Components

### Description

 

The "C" Series Lock Mandrels are no-go type locks that are designed to locate in the "D" Series Landing Nipples. The "C" Lock features a no-go rig which assures positive positioning in the landing nipple and a shear release ratchet mechanism that prevents lock dogs from retracting.

![c_lock](https://www.tools-int.com/hs-fs/hubfs/c_lock.jpg?width=220&name=c_lock.jpg)

 

###          Specifications

 

| SPECIFICATIONS |  |  |  |
| --- | --- | --- | --- |
|  | **2"** | ** 2 1/2"** | **3"** |
| FISHNECK O.D. | 1.375" | 1.750" | 2.313" |
| PACKING O.D. | 1.81" | 2.250" | 2.750" |
| NO GO O.D. | 1.859" | 2.297" | 2.297" |
| BOTTOM THREAD (Packing Body) | 1 5/8"-14 | 1 15/16"-14 | 2 1/2"-12 |
| BOTTOM THREAD (Expander Tube) | 15/16"-18 | 1 3/16"-18 | 1 5/8"-14 |
| RUNNING TOOL | 41D02200 | 41D02250 | 41D02300 |
| PULLING TOOLS | 40JDC200 | 40JDC250 | 40JDC300 |
|  | or 40SB1200 | or 40SB1250 | or 40SB1300 |

###          Assembly

 

| ASSEMBLY |  |  |  |
| --- | --- | --- | --- |
|  | **2"** | **2 1/2"** | **3"** |
| Part Number | 12CL0200 | 12CL0250 | 12CL0300 |

###          Components

 

| COMPONENTS |  |  |  |
| --- | --- | --- | --- |
|  | **2"** | **2 1/2"** | **3"** |
| Fishneck | 12B01182 | 12B01187 | 12B01211 |
| No Go Retainer | 12B01186 | 12B01191 | 12B01212 |
| No Go Ring | 12B01190 | 12B01195 | 12B01213 |
| Shear Dog | (2) 12B01180 | (2) 12B01196 | (2) 12B01214 |
| Expander Tube | 12B01183 | 12B01189 | 12B01215 |
| Locking Dog | (2) 12B01192 | (3) 12B01197 | (3) 12B01216 |
| Lock Housing | 12B01184 | 12B01193 | 12B01217 |
| Packing Body | 12B01188 | 12B01194 | 12B01218 |
| Ratchet Assembly | 12CL1200 | 12CL1250 | 12CL1300 |
| Back Up Ring | (2) 12B01206 | (2) 12B01209 | (2) 12B01219 |
| Packing | (6) 91A01079 | (6) 91A00584 | (6) 91V33760 |
| Adapter Ring | 12B01205 | 12B01210 | 12B0122012B01189 |

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