Du-Pas Tools – Aviation Industry
DU-PAS
TOOLS FOR AVIATION INDUSTRY

Du-Pas provides advanced pneumatic and cordless tools designed for precision and reliability in the aviation industry. Engineered to meet the demanding standards of aircraft maintenance and assembly, our tools deliver superior torque control, lightweight performance, and long-term durability. Trusted by professionals worldwide for efficiency, safety, and accuracy in every application.

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Du-Pas Aviation Tools
Drill Head | QL & QR Series Specifications

QSM Series – Offset Drill Head Specifications

Drill Head 1 Drill Head 2
Part No.Offset TypeGear StageDrilling DirectionH (mm)H1 (mm)A (mm)A1 (mm)A-A (mm)W (mm)R (mm)L (mm)L1 (mm)Offset AngleInner Thread
QSM1-0190°4Forward8-39.4-48.4167.599.347.6-1/4"-28
QSM1-0290°4Forward8-51.1-60.125.48.599.347.6-1/4"-28
QSM2-0190°6Forward1012.687.55398.525.48.599.948.2-1/4"-28
QSM2-0290°8Forward8.9-121.5-132.5258.599.948.2-1/4"-28
QSM3-0190°6Forward1012.687.55398.525.48.5146.294.5-1/4"-28
QSM3-0290°4Forward8.9-53.5-64.5258.6146.294.5-1/4"-28
QSM3-0390°8Forward8.9-121.5-132.5258.6146.294.5-1/4"-28
QSM4-0190°6Forward1012.687.55398.525.48.5178.8127.1-1/4"-28

* Use the standard Threaded type drill for the inner thread of 1/4″-28 output.

QL Series & QR Series Specifications

QL Series Drawing QR Series Drawing
Part No.Offset TypeGear StageDrilling DirectionH (mm)H1 (mm)A (mm)A1 (mm)A-B (mm)A-C (mm)W (mm)R (mm)L (mm)L1 (mm)Offset AngleInner Thread
QLM2-01Left6Forward12.6-78-66.2532.2525.48.599.948.245°1/4"-28
QLM2-02Left6Forward1012.6783666.2532.2525.48.599.948.245°1/4"-28
QLM3-01Left6Forward12.6-78-66.2532.2525.48.5146.294.545°1/4"-28
QLM4-01Left6Forward12.6-78-66.2532.2525.48.5178.8127.145°1/4"-28
QRM2-01Right6Forward12.6-78-66.2532.2525.48.599.948.245°1/4"-28
QRM2-02Right6Forward1012.6783666.2532.2525.48.599.948.245°1/4"-28
QRM3-01Right6Forward12.6-78-66.2532.2525.48.5146.294.545°1/4"-28
QRM4-01Right6Forward12.6-78-66.2532.2525.48.5178.8127.145°1/4"-28

* Use the standard Threaded type drill for the inner thread of 1/4″-28 output.