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Impact Wrench, Air, Heavy Duty, 1/2" Drive (50-400 ft. lb.)

Stock#: IMC500

  • Patented power boost muffler by-pass valve delivers and additional 25 ft. lbs. of torque (forward) and 20 ft. lbs. of torque (reverse) when vented through the front exhaust.
  • Aluminum front housing and composite rear housing combine to deliver a durable, lightweight and balanced unit.
  • Reverse bias motor provides greater torque in the reverse direction.
  • Ribbed, textured handle provides maximum comfort and control.
  • Contoured trigger eliminates pinch points and delivers "featherable" power control.
  • One-hand Forward/Reverse toggle-style lever.
  • Four-position power regulator for greater job versatility.
  • Twin-hammer impact mechanism for longer life and greater power.
  • CE Conformity.
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Key * Part No. Units Req'd Description Price per Unit Checkout
05 ATC500-941 1 Hammer Case Bushing $22.60
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07 ATC500-K23 1 Bypass Valve Kit (includes 7A bypass valve, 7B washer, 7C bypass knob, and 7D screw) $8.95
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08 ATC500-A626 1 Anvil Assembly $115.00
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09 ATC500-425A 1 Socket Retainer $4.50
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11B ATC500-704 2 Hammer Frame Pin $3.75
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14 ATC500-97 1 Rotor Bearing $14.20
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15 ATC500-11 1 Front End Plate $86.75
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17 ATC500-53 1 Rotor $151.00
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18 ATC500-3A 1 Cylinder $126.00
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22 ATC500-638 4 Hammer Case Screw $4.20
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23 ATC500-A329 1 Reverse Valve Assembly (includes 23A reverse valve o-ring, and 23B reverse valve o-ring) $24.85
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25 ATC500-A565 1 Inlet Bushing Assembly $119.00
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26 ATC500-61 1 Inlet Bushing Screen $6.90
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28 ATC500-K303 1 Inlet Parts Kit (Includes 28A washer, 28B inlet bushing seal, 28C tilt valve spring, 28D Tilt Valve, $26.00
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* Parts not listed are no longer available.

Product Specifications
Stock # IMC500
Name Impact Wrench, Air, Heavy Duty, 1/2" Drive (50-400 ft. lb.)
Air Inlet Thread Size 1/4"-18 NPT
Air Consumption, Free Speed, CFM (SCFM) [L/MIN] 5.9 (42) [167.0]
Air Consumption, Working, CFM (SCFM) [L/MIN] 3.5 (25) [99.1]
Blows per Minute, BPM 1250
Free Speed, Forward, RPM 9,500
Free Speed, Reverse, RPM 10,500
Recommended Hose Size, inches (mm) 3/8 (10) ID min.
Overall Length, inches (mm) 7.81 (195)
Recommended Air Pressure, psig (kPa) 90 (620)
Square Drive, inches 1/2
Torque Range, ft. lb. (Nm) 50-400 (68-544)
Vinyl Boot IMC500BOOT
Weight, lbs. (kg) 4.4 (2.0)
Maximum Torque, ft. lb. (Nm) (Bypass Closed) 500 (678.0) forward, 600 (814) reverse
Maximum Torque, ft. lb. (Nm) (Bypass Open) 525 (711.9) forward, 620 (841) reverse
Sound Level, free speed, dBa 108.5
Sound Level, working, dBa 95.5
Height, inches (mm) 7.25 (184.2)
Width, inches (mm) 2.75 (69.9)

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