A professional studio photograph of the KT Pro Tools A8401MP 8-piece impact socket set, featuring eight heavy-duty black sockets arranged in a single row within an open blue metal carrying case.
A professional studio photograph of the KT Pro Tools A8401MP 8-piece impact socket set, featuring eight heavy-duty black sockets arranged in a single row within an open blue metal carrying case.
A professional studio photograph of the KT Pro Tools A8401MP 8-piece impact socket set, featuring eight heavy-duty black sockets arranged in a single row within an open blue metal carrying case.
A professional studio photograph of the KT Pro Tools A8401MP 8-piece impact socket set, featuring eight heavy-duty black sockets arranged in a single row within an open blue metal carrying case.
KT Pro

KT Pro Tools Impact Socket Set A8401MP 1 Inch Drive (8 Piece CR-MO Steel 6PT Deep Thin Wall 4PT Rear Wheel Truck Mechanic Fastener Driver)

Only 1 left
SKU: A8401MP
$68.99 USD

Description

High-Performance 8 Piece 1 Inch Drive Metric CR-MO Steel Impact Socket Set

The KT Pro Tools A8401MP 8-Piece 1-Inch Drive Impact Socket Set functions as a heavy-duty fastener driving collection engineered to transmit extreme pneumatic torque when servicing commercial truck fleets, heavy equipment, and industrial machinery. Drop-forged from high-grade Chrome Molybdenum (CR-MO) steel with a thermal black phosphate coating, this 1-inch drive set operates safely with air impact wrenches outputting over 1,000 ft-lbs of torque. Incorporating 6-point deep thin-wall metric sockets alongside specialized 4-point square rear wheel sockets, the tool set accesses deeply recessed studs and dual-wheel fasteners while resisting impact fatigue, socket wall splitting, and fastener rounding.

Best Used For:

  • Commercial Fleet & Rear Wheel Service: Removing 4-point square inner cap nuts and 6-point outer lug nuts on heavy-duty commercial truck dual-wheel assemblies.
  • Heavy Equipment Fastener Maintenance: Driving large metric bolts (24mm to 41mm) on construction machinery, tractors, and industrial rigs with 1-inch air impact guns.
  • Recessed Industrial Machine Assembly: Reaching sunken structural fasteners in tight clearances using high-clearance thin-wall deep sockets.

Key Performance & Safety Features

  • Drop-Forged Chrome Molybdenum Steel: Premium CR-MO alloy construction absorbs severe pneumatic shock loads without cracking, shattering, or deforming under load.
  • Corrosion-Resistant Black Phosphate Finish: Precision heat-treated oil-rubbed phosphate layer guards steel against rust, friction wear, and shop chemical exposure.
  • Deep Thin-Wall Socket Design: Reduced outer diameter profile provides critical clearance inside tight wheel wells and narrow industrial machinery recesses.
  • Specialized 4-Point Rear Wheel Sockets: Includes 17mm and 21mm 4-point square sockets specifically engineered for commercial truck inner dual-wheel studs.
  • High-Torque 6-Point Contact Profile: Drives on fastener flat sides rather than corners to eliminate nut rounding during high-foot-pound removals.
  • Heavy-Duty Molded Storage Case: Custom-fitted hard shell case keeps 16.0-pound socket set organized and mobile across job sites.

What's Included

  • (6) 1" Drive 6-Point Deep Thin-Wall Impact Sockets: 24mm, 27mm, 32mm, 36mm, 38mm, 41mm
  • (2) 1" Drive 4-Point Square Rear Wheel Impact Sockets: 17mm, 21mm
  • (1) Heavy-Duty Molded Storage Carrying Case

Technical Specifications

Brand Name KT Pro Tools (King Tony)
Model Number SKU A8401MP
Tool Classification 1-Inch Drive Impact Socket Set
Square Drive Anvil Size 1.00 in. Square Drive
Piece Count Quantity 8 Pieces (Plus Case)
Material Metallurgy Drop-Forged Chrome Molybdenum Steel (CR-MO)
Surface Protective Treatment Precision Heat-Treated Black Phosphate Finish
Socket Drive Profiles 6-Point Hex & 4-Point Square Profiles
Minimum Socket Size (Metric / SAE) 17mm (0.669 in.)
Maximum Socket Size (Metric / SAE) 41mm (1.614 in.)
Total Weight 16.00 lbs. (7.26 kg)
Primary Machine Compatibility 1-Inch Drive Pneumatic & Electric Impact Wrenches (M7, Chicago Pneumatic, Ingersoll Rand)
Target Material Substrates Grade 8 & 10.9 Steel Fasteners, Truck Wheel Lug Nuts, Heavy Machinery Bolts

Pro-Tip: When servicing heavy-duty commercial truck dual-wheel assemblies with a 1-inch drive air wrench, always seat the 4-point square socket completely onto the inner square cap nut before triggering the gun. Full engagement across all four faces distributes the torque evenly, preventing inner stud rounding and extending socket drive life.