Studio view of the Gearwrench 21mm deep impact socket standing upright featuring high-visibility laser etched size markings inside a circle and the Gearwrench logo on the black phosphate finish.
GEARWRENCH

Gearwrench 3/4 Inch Drive Deep Impact Socket 21mm 6 Point Metric Chrome Molybdenum Alloy Steel Industrial 84983

Only 1 left
SKU: 84983
$19.29

Description

Professional Grade Reliability for Heavy Equipment Maintenance

The Gearwrench 84983 3/4-Inch Drive 21mm Deep Impact Socket is engineered to withstand the punishing demands of professional heavy-duty applications. Forged from premium Chrome Molybdenum alloy steel (Cr-Mo), this socket delivers the superior tensile strength and impact resistance required when using powerful 3/4-inch drive pneumatic or cordless impact wrenches. Its deep profile design allows for critical access to recessed fasteners and nuts on extended threads, making it a go-to tool for fleet maintenance, industrial assembly, and large-scale machinery repair.

To maximize performance and extend the lifespan of your fasteners, this socket features Gearwrench’s precision off-corner loading technology. By shifting the contact point away from the corners to the flat sides of the fastener, this design significantly reduces the risk of rounding off bolt heads under high torque. The socket is finished with a corrosion-resistant manganese phosphate coating to stand up to harsh shop environments. It also features dual identification markings—high-visibility laser etching for quick selection in low light and a secondary hard stamp that remains legible for the life of the tool. Meeting or exceeding ASME specifications, this socket is built to forge ahead through the toughest jobs. 

Key Features

  • Industrial Strength: Manufactured from Chrome Molybdenum alloy steel (Cr-Mo) for exceptional durability and shock resistance.
  • Off-Corner Loading: 6-point hex design prevents fastener rounding by applying force to the flats.
  • Corrosion Resistant: Manganese phosphate finish protects against rust and shop fluids.
  • Dual Markings: Features both high-visibility laser-etched markings and secondary hard-stamped sizes.
  • Deep Profile: Extended length provides access to recessed fasteners and long studs.
  • Certified Quality: Meets or exceeds ASME specifications for dimension and proof torque.

What's Included

  • (1) 3/4 in. Drive 21mm Deep Impact Socket (84983)

Specifications

Brand Gearwrench
Model Number 84983
Drive Size 3/4 in.
Socket Size 21mm
Unit of Measure Metric
Drive Type 6 Point Hex
Overall Length 3.543 in.
Drive End Width 1.732 in.
Socket End Width 1.358 in.
Bolt Clearance Depth 0.591 in.
Opening Depth 0.461 in.
Material Chrome Molybdenum Alloy Steel
Finish Manganese Phosphate
Impact Rated Yes
Pro-Tip: Because 3/4-inch drive impact tools generate massive torque and vibration, friction rings (hog rings) alone are often insufficient to hold the socket securely. For maximum safety, always align the pin hole on the socket with the hole in the anvil and secure it using a locking pin and O-ring to prevent the socket from detaching during use.