CDI 10005MFRMH – 1" Drive Torque Wrench 200-1000 ft-lb

The CDI 10005MFRMH is the apex of the CDI hand-torque wrench lineup — a 1-inch drive, dual-scale micrometer click-type torque wrench covering 200–1000 ft-lb (271.2–1355.8 Nm) at 70 inches long and 25.10 lb, packed in a metal storage box with an extension handle included. This is a heavy maintenance instrument for MRO facilities, overhaul shops, and Part 145 stations performing structural and powerplant work on turbine aircraft, regional jets, and large-frame helicopters.

Why 1-inch drive above 600 ft-lb

The 6004MFRMH reaches 600 ft-lb on a 3/4-inch drive. At 700–1000 ft-lb, 3/4-inch drive socket geometry is approaching its mechanical limit under repeated application — socket wall integrity, ratchet mechanism fatigue, and drive coupling all degrade before the wrench specification does. The 1-inch drive provides the socket wall thickness, drive coupling area, and mechanical integrity that sustained work in the 700–1000 ft-lb band requires. The 70-inch handle with extension is the lever arm needed to apply 800–1000 ft-lb in a controlled single-click motion without exposing the operator to excessive force.

Documentation-ready for the most scrutinized work in aviation

Every 10005MFRMH 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 not a minor discrepancy — it is a hold item.

Built for the work no other wrench in the CDI lineup reaches

• 1" drive — the drive geometry required for sustained application above 600 ft-lb without socket or mechanism compromise
• 70" overall length with included extension handle — the lever arm needed for 800–1000 ft-lb single-click application
• Packed in a metal storage box — protects the wrench between heavy maintenance intervals and facilitates controlled tool crib management
• 5 ft-lb graduation — appropriate for structural AMM specifications stated in 25–100 ft-lb increments at this range
• 25.10 lb knurled metal handle built for MRO bay use, not field carry
• Spring-loaded pull-down lock ring locks settings through multi-bolt structural torque sequences
• Laser-marked dual scale reads ft-lb and Nm simultaneously
• Audible click plus tactile impulse confirms torque on large-format fasteners
• Rated to a minimum of 5,000 operating cycles
• Made in the USA by CDI Torque Products, a Snap-on Industrial Brands company

Where MRO facilities and overhaul shops use the 10005MFRMH

• Turbofan engine mount thrust link bolts and engine case hardware — CFM56, V2500, PW4000 series (400–800 ft-lb)
• Main rotor retention hardware on Sikorsky S-76 and similar medium-class helicopters (500–700 ft-lb)
• Main landing gear side brace and trunnion attach hardware on ERJ-145, CRJ-200, and similar regional jets (500–900 ft-lb)
• Large aircraft wheel and brake assembly hardware on transport-category platforms
• Wing spar cap bolts and major structural splice fasteners in heavy maintenance and modification work
• Turboprop reduction gearbox housing and large engine case structural fasteners
• Wide-body pushback tractor and heavy GSE structural chassis hardware (600–1000 ft-lb)

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 facilities, and overhaul shops across the U.S. The work the 10005MFRMH is used on — engine mounts, rotor retention, landing gear structural hardware — represents the highest-consequence fastener categories in certificated maintenance. Our on-site ISO 17025-accredited calibration laboratory recertifies the 10005MFRMH and returns it with documentation that satisfies any audit at any tier of the FAA oversight structure.