Milwaukee 48-22-9200 1/4" Drive Click Torque Wrench

The Milwaukee 48-22-9200 is a 1/4" drive click torque wrench covering 40–200 in-lb (4.5–22.6 Nm) — the precision range that governs some of the most damage-sensitive fastener work in aviation maintenance. Spark plug installation, avionics bay hardware, magneto and ignition harness fittings, pitot-static system connections, instrument panel fasteners, and small airframe access panel hardware all fall within this torque band. These are the applications where over-torque strips a threaded insert or cracks an aluminum housing, and where under-torque invites vibration-induced loosening in flight. The 48-22-9200 delivers ±3% full-scale accuracy, a definitive audible click, and a 4° arc swing purpose-built for the tight access conditions that define aircraft engine bays and avionics compartments.

Built for Tight-Space Aviation Fastener Work

The 90-tooth ratchet mechanism producing a 4° arc swing is the defining feature that puts this wrench into aircraft engine bays, avionics racks, and instrument panels where clearance is the limiting factor. Standard torque wrenches require swing arcs that simply don't fit in many aircraft access situations — forcing technicians to either compromise on tool choice or give up on torquing altogether. The 4° arc of the 48-22-9200 eliminates that tradeoff, delivering calibrated torque in confined quarters without switching to an uncalibrated substitute. The slim profile head and flush direction lever minimize clearance requirements further, making this wrench viable in access conditions that would defeat a bulkier design.

• 4° arc swing with 90-tooth ratchet — reaches fasteners in engine bays, avionics compartments, and instrument panels
• Slim profile head and flush direction lever minimize clearance requirements in confined access areas
• Strong break-away feel and audible click — unambiguous torque confirmation in high-noise maintenance environments
• All-metal knurled handle — secure grip with oily or gloved hands

Calibration-Grade Precision for Aviation Small Fastener Applications

At ±3% accuracy across the full 40–200 in-lb scale, the 48-22-9200 meets the precision requirements for torque-critical small fastener work specified in aircraft maintenance manuals and manufacturer service instructions. The laser-etched, high-contrast scale markings are permanent and resistant to solvent exposure — unlike printed graduations that fade or become illegible in active maintenance environments. Quick, accurate torque setting is supported by bold markings that are readable under typical hangar lighting conditions. The included calibration certificate supports formal tool introduction into calibrated tool control programs at Part 145 repair stations and ISO 9001 maintenance operations.

• ±3% full-scale accuracy — meets precision requirements for spark plug torque, avionics hardware, and small airframe fasteners
• Laser-etched graduations — permanent, solvent-resistant, readable under shop lighting
• Calibration certificate included — supports Part 145 and ISO 9001 calibrated tool program documentation
• 40–200 in-lb (4.5–22.6 Nm) range — covers spark plug installation torque values for most piston and turboprop engine types

Specifications

• Drive: 1/4 in.
• Torque Range: 40–200 in-lb (4.5–22.6 Nm)
• Accuracy: ±3% of full scale
• Arc Swing: 4°
• Ratchet Teeth: 90
• Handle: All-metal knurled
• Markings: Laser-etched, high-contrast
• Warranty: 2 Years Limited
• Includes: Carrying Case, Calibration Certificate