CDI 20005MFMHSS – 1" Drive Heavy-Duty Torque Wrench

The CDI 20005MFMHSS is a 1-inch drive, single-scale micrometer click-type torque wrench covering 300–2000 ft-lb (406.8–2711.6 Nm) — the highest-range hand torque wrench CDI makes. At 108.50 inches assembled with its two included extension handles, 48.75 lb, and a fixed non-ratcheted head, every specification reflects the physics of delivering accurate, documented torque at loads that approach the structural limits of what a hand-operated wrench can apply. This is a capital purchase for a heavy MRO, an overhaul facility, a major airline maintenance base, or a military depot operation. When it comes out of the box, the fasteners being torqued are among the most structurally critical in the airframe.

The range that defines heavy structural and wide-body maintenance

At 2000 ft-lb the ceiling reaches landing gear trunnion bolts and main gear side brace structural attach hardware on 737/A320-class and larger aircraft, wing attachment fittings, engine pylon attach hardware on wide-body platforms, and the large-bore structural fasteners that define the heavy maintenance authorization work only certain Part 145 stations perform. At 300 ft-lb the floor provides overlap with the 10005MFRMH for shops whose work spans both ranges. The 20005MFMHSS covers the full arc from significant structural hardware to the upper limit of what any hand-operated torque wrench reaches.

Why fixed non-ratcheted head above 1,000 ft-lb

A ratchet mechanism is a precision component with finite fatigue life. At 1,500–2,000 ft-lb, the load cycling through a ratchet pawl and ring gear on every stroke exceeds what any practical ratchet design sustains over repeated application. The fixed head on the 20005MFMHSS transfers torque directly through the drive geometry without an intermediate mechanism — providing the mechanical integrity these torque values structurally demand. This is not a feature trade-off; it is the correct engineering choice for the range.

Documentation-ready for the highest-consequence work in certificated maintenance

Every 20005MFMHSS ships individually serialized with a NIST-traceable certificate of calibration, satisfying traceability requirements in FAA-accepted maintenance programs, Part 145 repair station QCMs, and ISO 9001 quality systems. Meets or exceeds ASME B107.14 and ISO 6789. Accuracy: ±4% CW, ±6% CCW of indicated value from 20–100% of full scale. At this tier of maintenance, an expired calibration certificate is a program-level hold item.

Designed for bay use, not field carry

• 1" drive — the only drive geometry rated for sustained application above 1,000 ft-lb
• Fixed non-ratcheted head — required for mechanical integrity at 1,500–2,000 ft-lb torque loads
• Two extension handles included — the lever arm by which 2,000 ft-lb is applied in a controlled single-click motion
• 108.50" assembled overall length — a bay tool, positioned and operated with two hands and body weight
• 10 ft-lb graduation — appropriate for AMM specifications stated in 50–200 ft-lb increments at this range
• 48.75 lb total weight — consistent with equipment that lives in the tool crib, not the technician's bag
• Single scale English ft-lb — consistent with how US transport-category AMMs document high-torque structural hardware
• Packed in a cardboard box for storage between scheduled heavy maintenance intervals
• Audible click plus tactile impulse confirms torque — critical when the handle position may be behind the operator's sightline
• Made in the USA by CDI Torque Products, a Snap-on Industrial Brands company

Where Part 145 heavy MRO and overhaul facilities use the 20005MFMHSS

• Main landing gear trunnion bolts and side brace structural attach hardware on 737/A320-class aircraft (800–2000 ft-lb)
• Wing attachment fittings and center section structural splice fasteners in heavy maintenance
• Engine pylon structural attach hardware on wide-body and large narrowbody platforms
• Large-bore structural repair fasteners in major structural repair and modification work
• Turboprop and turbofan reduction gearbox housing structural fasteners at overhaul
• Military depot-level maintenance structural hardware requiring documented high-torque application
• Heavy GSE structural assembly hardware — maintenance stands, hangar equipment foundations, and dock structural fasteners

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 overhaul facilities across the U.S. The 20005MFMHSS is used on the most consequential structural work in certificated aviation maintenance — work where the documentation trail behind every torque wrench is examined under the closest regulatory scrutiny. Our on-s