The CDI 5T-I is a J-shank preset interchangeable-head torque wrench designed for production lines and repetitive assembly operations requiring consistent, tamper-proof torque in the 10–50 in-lb (1.1–5.6 Nm) range. At 6.50 inches long and 0.35 lb — the most compact torque wrench in the CDI lineup — it is purpose-built for the assembly and installation environments where the same small fastener gets torqued to the same value dozens or hundreds of times per shift.
What preset means in practice
A micrometer-adjustable torque wrench requires the operator to set the torque value, verify the setting, and apply — introducing adjustment time and human error into every cycle. A preset wrench has the torque value fixed in advance: position the tool, apply until the click confirms target torque, move to the next fastener. No setting to verify, no scale to misread, no accidental adjustment between fasteners. For production assembly, avionics installation, and repetitive maintenance where the same hardware specification is applied across identical fastener locations on identical aircraft, the preset wrench eliminates an entire category of error from the process.
User-set vs. factory-set: which to order
The 5T-I ships unset — the operator sets the torque value within the 10–50 in-lb range. No calibration certificate is included. For environments requiring a documented, NIST-traceable calibration at a specific preset value — Part 145 shops, AS9100-certified facilities, or programs with torque traceability requirements — order the 50T-I-SET, which CDI factory-presets to a specified value and ships with a NIST-traceable calibration certificate. Specify the required torque value when ordering the -SET variant; allow 10 days lead time for factory presetting.
Documentation and compliance
The 5T-I meets ASME B107.14 and ISO 6789. Accuracy: ±4% CW of indicated value from 20–100% of full scale. The user-set version does not ship with a calibration certificate — that distinction matters for Part 145 tool control documentation. If your QCM or quality program requires NIST-traceable documentation for preset torque tools, select the 50T-I-SET.
The smallest CDI torque wrench — built for small fastener production work
- 6.50" overall length and 0.35 lb — the most compact and lightest torque wrench in the CDI catalog
- 10–50 in-lb (1.1–5.6 Nm) covers avionics connector hardware, bonding strap terminals, and instrument mounting fasteners
- J-shank (27/64") accepts open-end, box-end, flare nut, and ratchet drive heads — same system as the 75MFIMHSS
- Tamper-proof single-setting mechanism — prevents accidental adjustment between production cycles
- Audible click plus tactile impulse confirms torque on each fastener without looking at a scale
- Cushion grip handle designed for repetitive use with minimal operator fatigue
- Made in the USA by CDI Torque Products, a Snap-on Industrial Brands company
Where production shops and avionics installers use the 5T-I
- Avionics connector backshell hardware and connector retention screws on MIL-spec and commercial connectors
- Relay and circuit breaker panel mounting fasteners throughout avionics bays
- Bonding strap terminal hardware and grounding screws on aircraft electrical installations
- Instrument mounting screws in composite and aluminum instrument panels
- Avionics box mounting hardware on fleet installations requiring identical torque at every location
- Any production line or repetitive maintenance operation where 10–50 in-lb is the target and consistency matters more than adjustability
Why source aviation tooling from Pilot John International
Pilot John International is an aviation-specialist distributor — not a general industrial catalog. We serve Part 145 repair stations, FBOs, MRO operations, and flight schools across the U.S. Whether your program calls for the user-set 5T-I or the factory-certified 50T-I-SET, both come from the same aviation-specialist source that understands the documentation requirements behind your torque program.
| General Information | |
|---|---|
| Part # | 5T-I |
| Manufacturer | CDI |
| Specifications | |
|---|---|
| Accuracy (CW) | |
| Country of Origin | USA |
| Handle | Cushion grip |
| Indicator | Audible click + tactile impulse |
| Overall Length | 6.50 in |
| Setting | User-set single preset (tamper-proof) |
| Shank Type | J shank (27/64") |
| Standards | ASME B107.14, ISO 6789 |
| Torque Range | 10 |
| Warranty | 1-year manufacturer |
| Weight | 0.35 lb |
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AIRCRAFT COMPATIBILITY
This item is for use on all aircraft.
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QUESTIONS & ANSWERS
Both are J-shank preset interchangeable-head torque wrenches in the 10–50 in-lb range. The 5T-I is user-set — it ships unset and without a calibration certificate; the operator sets the torque value. The 50T-I-SET is factory-preset by CDI to a torque value specified at the time of order, and it ships with a NIST-traceable certificate of calibration. Choose the 5T-I for production environments where the preset value may vary or where documentation requirements don't extend to the torque tool. Choose the 50T-I-SET when your Part 145 QCM, AS9100 program, or quality requirements demand NIST-traceable calibration documentation for preset tools.
The 10–50 in-lb range covers avionics connector backshell and retention hardware, relay and circuit breaker mounting fasteners, bonding strap terminal hardware, instrument mounting screws, and avionics box mounting fasteners — the small-fastener territory of avionics installation and aircraft electrical system work. For shops or production lines installing avionics into multiple identical aircraft, the preset mechanism ensures identical torque on every connector and mounting location without setting the wrench between fasteners.
The 5T-I uses the J-shank (27/64-inch nominal) interchangeable head system — the same standard CDI J-shank dimension used on the 75MFIMHSS and the rest of the T-I preset family. Compatible heads include open-end, box-end, flare nut, and ratchet drive configurations in SAE and metric sizes. Over 100 head configurations are available from CDI, Williams, and Snap-on Industrial.
Yes. Even a preset single-setting wrench should be verified against a known torque standard periodically — the click mechanism and spring can drift over time and use cycles. For user-set variants like the 5T-I, most Part 145 QCMs and AS9100 programs require the same calibration interval as adjustable wrenches — typically annually or at 5,000 cycles. The 50T-I-SET includes a factory calibration certificate at purchase; subsequent recalibration of either variant can be performed by Pilot John International's ISO 17025-accredited calibration laboratory.