Description
Metro depots in Ho Chi Minh City and Hanoi now service rolling stock every night, and those crews need a record of torque, not a guess. The Snap-on ATECH3FR250B torque wrench gives them a 1/2-inch TechAngle tool with a sealed flex-head ratchet. Its range also runs from 12.5 to 250 ft-lb, so one tool covers a wide mix of depot joints.

Catalog data
| Range | 12.5-250 ft-lb (16.9-339 N·m) |
| Head | Sealed flex head, 80-tooth ratchet, 4.5° swing |
| Length | 26.6 in |
| Weight | 3.75 lb (1.68 kg) without batteries |
| Power | Three AA alkaline cells |
| Finish | Black housing, chrome body |
FR versus F: what the letters tell you
In Snap-on’s industrial catalog, the FR models carry the black housing and chrome body. For the 300 ft-lb size, the same table also lists coloured twins with an F prefix, such as ATECH3F300RB in red. So the FR250B suits teams that want the standard finish. If your depot codes tools by colour, ask Lost in HCM which 250 versions it can source.
Rail jobs for the Snap-on ATECH3FR250B torque wrench
- Bogie brackets, dampers and traction rod fittings.
- Brake unit and sanding system mounts.
- Coupler and gangway hardware.
- Trackside gear such as point machines and signal housings.
Readings and alerts
Snap-on rates the wrench at 2% clockwise and 3% counterclockwise, from 20 to 100% of full scale. In addition, its angle mode reads from 0 to 360 degrees. Also, it warns the user through the screen, LEDs, sound and vibration, which helps in a noisy depot.
Depot care
Brake dust and grease build up on tools in a maintenance pit. So wipe the flex head after each shift and keep the wrench in its case. Also swap the AA cells as soon as the low-battery icon appears. Before an audit, have an outside lab check the calibration, because rail operators often ask for that record.
Buy the Snap-on ATECH3FR250B torque wrench through Lost in HCM
This listing points to our partner Lost in HCM, who supplies the wrench and sends all quotes. Simply request a quote from Lost in HCM for the FR250B. For more drives and ranges, browse the torque wrench section, or contact SMK Vietnam with questions. Snap-on keeps product pages on snapon.com.
Specification FAQ
How long is the ATECH3FR250B?
Snap-on lists it at 26.6 inches.
What batteries does it take?
It runs on three AA alkaline cells, so spares are easy to find.
How does it differ from the ATECH3FS250?
Both cover 12.5 to 250 ft-lb. However, the FS250 has a chrome finish and weighs 4.35 lb, while the FR250B weighs 3.75 lb.
















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