Pacific Scientific T5-8002-104B-00 Cable Tensiometer – 1/16" to 3/16", 5 to 300 lbs

The Pacific Scientific T5-8002-104B-00 Cable Tensiometer is used to measure cable tension in aircraft control systems and other precision applications where accurate mechanical tensioning is essential. It ensures that cables meet the exact tension requirements specified by the aircraft manufacturer, preventing issues such as slack, excessive load, or uneven control response. This helps maintain safe and efficient operation of critical flight systems. The unit’s accuracy and mechanical stability make it a standard in both aviation and defense maintenance programs.

The T5-8002-104B-00 belongs to the Pacific Scientific T5 Series, renowned for its precision mechanical dial design and robust construction, suitable for both field and hangar use. Unlike smaller models, this version offers enhanced tension range capabilities and a balanced lever system that reduces operator error. It is engineered for reliability under varying environmental conditions, ensuring consistent readings even in high-vibration or outdoor settings.

This tensiometer utilizes a mechanical lever and roller system that deflects under tension, directly translating the cable load to a dial indicator for immediate reading. The design eliminates electronic drift, and each unit is calibrated against certified standards to maintain measurement precision. Calibration adjustments can be made via internal controls, ensuring long-term accuracy even after extended use.

Calibration should be performed using certified calibration cables or tension standards under controlled conditions. The Pacific Scientific service manual outlines periodic calibration intervals, usually every 6 to 12 months, depending on usage. Calibration ensures the dial readings remain within acceptable tolerance limits and comply with aviation maintenance regulations such as ISO 17025 or MIL-STD calibration procedures.

The T5-8002-104B-00 is compatible with a range of cable diameters commonly used in aircraft control systems, typically between 1/16” and 1/4" in diameter. It is suitable for both stainless steel and galvanized control cables, allowing flexible use across general aviation, military, and rotorcraft platforms. Operators should always refer to the specific tension tables provided in the aircraft maintenance manual for correct setup.

This model is commonly used during aircraft rigging inspections, flight control cable tension verification, and preventative maintenance checks. It ensures that flight surfaces – such as ailerons, elevators, and rudders – are properly tensioned for responsive and balanced control. Maintenance technicians also use it during cable replacements and annual inspection procedures to confirm compliance with OEM specifications.

Technicians should store the tensiometer in its protective case when not in use to prevent shock and contamination. Avoid dropping or applying side loads to the dial or rollers. After each use, the rollers should be cleaned of debris or lubrication residue with a lint-free cloth. Proper handling ensures the precision of the internal spring and lever system remains intact over extended service intervals.

Yes. While designed for aviation cable systems, the T5-8002-104B-00 is widely used in industries that require precise cable tension control, such as aerospace manufacturing, telecommunications, and bridge cable inspections. Its rugged design and analog accuracy make it ideal for field calibration work or environments where electronic tensiometers are impractical.

The T5-8002-104B-00 offers mechanical reliability with a dial indicator, while the T60 Series introduces higher precision and digital readouts for more complex applications. The T5 model’s simplicity and ruggedness make it ideal for everyday maintenance in hangars or field conditions, whereas the T60 is typically used in laboratory or calibration settings where electronic data output is required.

Although the T5-8002-104B-00 is designed for a wide range of environments, extreme humidity or temperature can slightly affect its spring characteristics. Regular calibration compensates for these minor deviations. Storing the device in a climate-controlled space and allowing it to reach ambient temperature before use ensures the highest accuracy.

Routine maintenance involves inspecting the cable grooves for wear, checking the dial indicator for smooth operation, and confirming calibration. Periodic lubrication of the pivot points may be necessary, using only manufacturer-approved lubricants. Avoid disassembly beyond recommended field-service steps to maintain warranty coverage.

The Pacific Scientific T5-8002-104B-00 Cable Tensiometer is assigned the NSN 6635-01-244-7810, classifying it as a precision tensiometer and dial indicator instrument under the U.S. Federal Supply Classification system. This NSN designation helps streamline logistics, procurement, and military maintenance documentation.

There are three key differences. First, the T5-8002-104B-00 is built on the T5-8000 series platform — physically larger and heavier (approximately 1 lb vs. 0.77 lb) than T5-2000 series instruments, engineered for more demanding MRO environments. Second, it uses a single unified tension range (5–300 lbs) across all five supported cable sizes, rather than stepped ranges by cable group as used in the T5-2002 sub-series. Third, it uses Riser #2 for 3/32" and 1/8" cables rather than Riser #1, which is an important distinction for technicians familiar with T5-2000 series riser selection.

The T5-8002-104B-00 uses Riser #1 for 1/16" cables, Riser #2 for 3/32" and 1/8" cables, and Riser #2C for 5/32" and 3/16" cables. Most T5-2000 series models use Riser #1 for all three small cable sizes (1/16", 3/32", 1/8"). The use of Riser #2 on the T5-8002-104B-00 for the 3/32" and 1/8" cable sizes is an important distinction — always confirm riser selection using the T617-104B calibration card supplied with the instrument.

The T5-8002-104B-00 is listed under NSN 6635-01-244-7810.

Annual recalibration is the standard interval, or sooner following any overload event, mechanical shock, or drop. Pilot John International's ISO 17025-accredited calibration laboratory performs recalibration of Pacific Scientific T5-8000 series tensiometers to original manufacturer specifications, issuing a fully traceable calibration certificate. Visit pilotjohn.com/calibration to learn more or request service.