Milwaukee 48-22-9201 3/8" Drive Click Torque Wrench

The Milwaukee 48-22-9201 is a 3/8" drive click torque wrench covering 50–250 in-lb (5.6–28.2 Nm) — a mid-range in-lb zone that addresses a specific and frequently underequipped category of aviation maintenance fastener work. Fuel system fittings, oil system connections, ELT mounting hardware, avionics rack fasteners, pitot-static line connections, antenna bases, and small engine accessory attach points all fall in this torque band. These are the fasteners where in-lb precision is specified in the maintenance manual and where estimating by feel — or using a wrench outside its calibrated range — introduces measurable risk. The 48-22-9201 closes that gap with ±3% full-scale accuracy, a 4° arc swing for tight-space access, and a calibration certificate ready for tool control program documentation.

The In-Lb Range That Aviation Toolrooms Often Miss

Most aviation maintenance toolrooms carry a 1/4" drive for spark plugs and panel hardware, and a 3/8" or 1/2" drive ft-lb wrench for structural and cowling fasteners. The 50–250 in-lb mid-range on a 3/8" drive is its own distinct territory — and one where the right calibrated tool is often absent. The 48-22-9201 fills that role with the same mechanical platform that defines the Milwaukee click torque wrench family: 90-tooth ratchet, 4° arc swing, slim profile head, and flush direction lever. In avionics bays, fuel system access panels, and engine compartments where clearance determines tool selection, the 4° arc swing means calibrated torque reaches fasteners that a full-swing wrench cannot. For A&P mechanics and MRO technicians, that translates directly to fewer instances of reaching for an uncalibrated substitute.

• 50–250 in-lb (5.6–28.2 Nm) range — covers fuel fittings, ELT hardware, avionics rack fasteners, pitot-static connections, and antenna mounts
• 4° arc swing with 90-tooth ratchet — reaches fasteners in fuel system access panels, engine bays, and avionics compartments
• Strong break-away feel and audible click — unambiguous torque confirmation in shop and hangar environments
• Slim profile head and flush direction lever — minimizes clearance requirements in restricted access areas
• All-metal knurled handle — secure grip with oily or gloved hands

Calibration-Grade Precision Built for MRO and Part 145 Tool Programs

At ±3% accuracy across the full 50–250 in-lb scale, the 48-22-9201 meets the precision requirements for torque-critical fastener work specified in aircraft maintenance manuals and manufacturer service instructions. Laser-etched, high-contrast graduations are permanent and solvent-resistant — remaining legible under shop lighting conditions throughout the service life of the tool, unlike printed scales that degrade with cleaning chemical exposure. The included calibration certificate supports formal documentation requirements when introducing this wrench into calibrated tool control programs at Part 145 repair stations and ISO 9001 or AS9100 maintenance operations.

• ±3% full-scale accuracy — meets precision requirements for in-lb torque-critical fastener work
• Laser-etched graduations — permanent, solvent-resistant, readable under hangar and shop lighting
• Calibration certificate included — supports Part 145 and ISO 9001 calibrated tool program documentation
• 2-year limited warranty backed by Milwaukee Tool

Specifications

• Drive: 3/8 in.
• Torque Range: 50–250 in-lb (5.6–28.2 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