Aircraft Series Angle Drills 2,800 RPM 1/4"-28 Female Spindle - 90°
The Wespro D228A Series angle drills have a 1/4"-28 female threaded spindle that accepts threaded shank drill bits, collet chucks and Heavy Duty mini chucks.


  • Body is machined from solid aluminum alloy stock
  • Built-in air regulator for positive speed control
  • Can be converted to sander by using threaded adapter (Order No. 196201)
  • Designed and manufactured to meet aircraft industry standards
  • Flush grease fitting in the gear head and housing
  • Full gear cage for heavy duty use
  • High power-to-weight ratio
Torque in. lbs (nm) 29 (3.25)
Free Speed rpm 2,800
Spindle Thread in. (mm) 1/4-28
Drill dia. Capacity in. (mm) 1/4
Hose Size in. (mm) 3/8 (9.5)
Length in. (mm) 10-1/16 (256)
Air Cons. cfm (cmm) 4 (0.11)
Noise Level dB(A) 82
Weight lbs (kgs) 1.70 (0.77)
Air Inlet (NPT) 1/4

Parts Breakdown