CDI 10002MRMH – 3/8" Drive Micrometer Torque Wrench

The CDI 10002MRMH is the highest-range wrench in the CDI compact inch-pound family — a 3/8-inch drive, dual-scale micrometer click-type torque wrench covering 150–1000 in-lb (17.0–113.0 Nm). At 1,000 in-lb the ceiling converts to 83.3 ft-lb, bridging inch-pound and foot-pound territory in a single 16-inch, 2.50 lb tool. For mechanics who prefer working in in-lb units, that range eliminates the need to switch tools or convert units mid-sequence on hardware that would otherwise require a foot-pound wrench.

When 750 in-lb isn't enough

The 7502MRMH tops out at 750 in-lb — right where the hardware on heavier airframes and larger engines begins. Cylinder base nut final torque on Lycoming and Continental six-cylinder engines often runs 600–750 in-lb. Crankcase through-bolt and main bearing cap hardware on larger engines can reach 700–900 in-lb. Prop flange bolts on heavier singles and light twins, turboprop accessory gearbox hardware, and heavy structural attach points on larger piston and turbine aircraft regularly push past that ceiling. The 10002MRMH carries those jobs through completion without forcing a tool change.

Documentation-ready for certificated maintenance

Every 10002MRMH 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.

Same compact footprint, extended ceiling

• 150–1000 in-lb (17.0–113.0 Nm) — same 16" length and 2.50 lb weight as the 7502MRMH, 250 in-lb more range at the top
• 5 in-lb graduation — appropriate for maintenance manual specifications that are stated in 25–100 in-lb increments at this range
• 1,000 in-lb ceiling converts to 83.3 ft-lb — covers hardware typically handled by a foot-pound wrench without changing tools
• Knurled metal handle withstands sustained high-cycle professional use on engine overhaul and heavy maintenance tasks
• Spring-loaded pull-down lock ring locks the setting through multi-fastener torque sequences
• Laser-marked dual scale reads in-lb and Nm simultaneously — no conversion chart needed
• Fixed ratcheting 3/8" drive head with quick-release button
• Audible click plus tactile impulse confirms torque in noisy shop environments
• Rated to a minimum of 5,000 operating cycles
• Made in the USA by CDI Torque Products, a Snap-on Industrial Brands company

Where A&P mechanics and MRO shops reach for the 10002MRMH

• Cylinder base nut final torque on Lycoming and Continental six-cylinder engines (600–750 in-lb)
• Crankcase through-bolt and main bearing cap hardware on larger piston engines (700–900 in-lb)
• Propeller flange bolts on heavier light singles and light twins (600–900 in-lb)
• Turboprop accessory gearbox cover and mounting hardware
• Heavy structural attach points and wing spar hardware on larger piston and turbine aircraft
• GSE drivetrain and chassis fasteners in the upper inch-pound range

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. We understand that high-range torque tools used on engine overhaul and structural work carry the highest documentation scrutiny in a Part 145 QCM — and that a current NIST-traceable certificate is non-negotiable. Our on-site ISO 17025-accredited calibration laboratory recertifies the 10002MRMH and returns it with documentation your quality system can stand behind.