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CRAFTSMAN deep socket, 3/8-inch drive, 7/8-inch, 6-point, full polish chrome finish

CRAFTSMAN Deep Socket SAE 3/8-Inch Drive 7/8-Inch 6-Point CMMT43339

SKU CH-519Z-479GA

Deep 3/8-inch drive socket fits 7/8-inch SAE fasteners with six-point grip and polished chrome finish

  • Fit and compatibilityOut-Opening, Narrow Stile, Store Front Doors
  • Certifications and standardsADA Compliant
  • Main materialSteel
  • Sold asBox
  • Number of items1 pack
  • Full polish chrome finish resists corrosion
  • 6-point design increases torque on fasteners
  • Large markings enable quick size identification
  • Meets or exceeds ASME specifications
  • Full lifetime warranty provides long-term confidence

Deep SAE Socket for 3/8-Inch Drive

The CRAFTSMAN CMMT43339 is a 7/8-inch deep socket built for 3/8-inch drive ratchets. Its 6-point geometry engages the flats of a fastener to deliver higher torque without rounding corners. A full polish chrome finish resists corrosion in shop environments. Large markings allow quick size identification during service work.

Thermals Noise and Power Draw

As a hand tool the socket generates no heat, noise or electrical draw during normal use. The steel construction absorbs impact loads without deformation. Polished surfaces reduce friction when turning fasteners by hand or with a ratchet. No external power source is required for operation.

Upgrade Path and Compatibility

This socket replaces worn or missing 7/8-inch 6-point deep sockets in a 3/8-inch drive set. It fits fasteners with a .375 inch compatible dimension. The deep profile reaches recessed bolts that standard sockets cannot engage. Buyers needing other drive sizes or metric dimensions will require additional sockets.

How it compares

Measured against everything we stock in Workshop Hardware, Springs & Clamps, at today’s prices. Recalculated every night.

Price $11.99
Cheaper than about 77% of the 383 comparable items (median $17.99).

Specifications

Product
Brand nameDeWalt
Model nameHand Rivet Nut Setter Kit
Part numberCMMT43339
Size & build
Main materialSteel
Compatibility
Fit and compatibilityOut-Opening, Narrow Stile, Store Front Doors
In the box
Number of items1 pack
Environment & compliance
Certifications and standardsADA Compliant

Questions about this item

How do I attach the 3/8-inch drive socket to my ratchet, and what step is often missed?

Align the square drive on the socket with the ratchet anvil and press until the detent ball clicks into the socket groove; the step people skip is verifying that click, which prevents the socket from falling off under load.

What maintenance will the chrome finish need over time?

Wipe the socket clean after each use and apply a light coat of machine oil to the polished surface; this preserves the corrosion resistance noted in the specifications and keeps the large size markings legible.

At what point does the 6-point design reach its limit during sustained high-torque work?

The 6-point geometry contacts fastener flats rather than corners, so the first limit is fastener rounding or bolt stretch before the socket itself deforms, provided torque stays within the .375 inch compatible fastener range.

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