Description
Engine rooms on tugs, ferries and supply boats leave little space to swing a long handle. Yet shipyard crews still need proof that each joint met its spec. The Snap-on ATECH3F300OB torque wrench brings TechAngle electronics to that work on a 1/2-inch drive, from 15 to 300 ft-lb. Also, Snap-on’s industrial catalog lists it as the orange version of the ATECH3FR300B.
Specifications from Snap-on’s catalog
| Range | 15-300 ft-lb (20.3-406.7 N·m) |
| Head | Sealed flex head, 80 teeth, 4.5° gear action |
| Head size | 3/4 in deep, 1-5/8 in wide |
| Length | 30 in |
| Weight | 3.95 lb (1.79 kg) without batteries |
| Power | Three AA alkaline cells |
Marine jobs for the Snap-on ATECH3F300OB torque wrench
- Generator set and auxiliary engine mounts.
- Seawater pump and strainer flanges.
- Steering gear, winch and deck machinery brackets.
- Exhaust and manifold studs during engine overhauls.
Because the head flexes, the handle can clear pipes and frames that crowd a marine engine. Also, an orange handle stands out in a dim bilge, so it is harder to leave behind.
Salt air and electronics
Salt spray attacks contacts and metal, so electronics need extra care at sea. Therefore wipe the wrench dry after each shift, and never rinse it with water. Next, take the batteries out before the vessel leaves for a long trip. Then store the tool in its case, away from the hull’s damp corners.
Angle mode on engine overhauls
Some marine engine manuals give head bolt specs as torque plus an angle. For that reason, the torque-then-angle mode saves time, since the wrench stays on the bolt between steps. In addition, Snap-on’s gyro compensation keeps the angle reading true when the head sits flexed. Still, follow the engine manual for every value and sequence.
Ask for a Snap-on ATECH3F300OB torque wrench quote
Our partner Lost in HCM supplies the ATECH3F300OB and handles pricing, stock and shipping. Just request a quote from Lost in HCM. For other sizes, see our torque wrenches, or contact SMK Vietnam with questions. Snap-on’s own pages sit at snapon.com.
Marine buyer FAQ
How long is the ATECH3F300OB?
Snap-on’s catalog gives 30 inches for this wrench.
Is it the same tool as the ATECH3FR300B?
Snap-on lists it in the same catalog column, as the orange version. So the range, head and length match.
What powers it?
Three AA alkaline cells power it, as with the other 1/2-inch TechAngle models in that table. Carry spares on board, since a dead cell stops the job.
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