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Four thin-wall impact sockets in 17.5, 19.5, 21.5, 22.5mm sizes, 1/2" drive

DeWalt 78204 4-Piece 1/2" Drive Thin Wall Lug Nut Socket Set 17.5-22.5mm

SKU CH-RTSA-AE27T

Four 1/2" drive thin-wall impact sockets in 17.5, 19.5, 21.5 and 22.5mm reach damaged or swollen lug nuts in tight wheel wells

  • Fit and compatibilityOut-Opening, Narrow Stile, Store Front Doors
  • Certifications and standardsADA Compliant
  • Main materialSteel
  • Sold asBox
  • Number of items1 pack
  • Thin-wall design reaches lug nuts in tight wheel spaces
  • Impact-rated steel withstands high-torque removal of damaged nuts
  • Four half-millimetre sizes 17.5 19.5 21.5 22.5mm cover swollen fasteners
  • 1/2-inch drive fits standard impact wrenches and breaker bars
  • ADA-compliant specification meets accessibility standards for commercial door hardware

DeWalt 78204 Thin Wall Lug Nut Socket Set

The DeWalt 78204 set provides four 1/2" drive impact-rated sockets in 17.5, 19.5, 21.5 and 22.5mm sizes. Thin wall construction allows access to recessed or narrow lug nuts on modern wheel designs. Steel construction withstands repeated impact use in professional automotive environments.

Technicians removing damaged or swollen lug nuts

Suits mechanics and tyre fitters who encounter stuck fasteners on out-opening or narrow stile commercial door hardware. The half-millimetre sizing addresses swollen nuts that standard sockets cannot grip. Not intended for buyers needing standard whole-millimetre sizes or non-impact hand tool sockets.

17.5 to 22.5mm half-millimetre sizing

Each socket increments by 2mm in half-millimetre steps covering 17.5, 19.5, 21.5 and 22.5mm. This specific progression matches swollen lug nuts found on ADA compliant store front doors. Confirm the exact nut dimension before purchase as standard 17, 19 or 21mm sockets will not engage these fasteners.

How it compares

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

Price $39.99
Pricier than about 80% of the 383 comparable items (median $17.99).

Specifications

Product
Brand nameDeWalt
Model nameHand Rivet Nut Setter Kit
Part number78204
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

Will the 17.5mm and 19.5mm thin-wall sockets fit on my existing 1/2" drive impact gun without an adapter?

Yes — every socket in the 78204 set has a standard 1/2" square drive, so it locks directly onto any 1/2" drive ratchet, breaker bar or impact wrench you already own.

How can I verify the sockets are gripping the lug nut correctly once I start the job?

The thin-wall profile should seat fully over the nut with no gap; you will feel positive engagement on the flats and the impact-rated steel will not flex under torque.

Does the 78204 box include a 1/2" drive ratchet or extension, or only the four sockets?

The pack contains only the four thin-wall sockets — 17.5mm, 19.5mm, 21.5mm and 22.5mm — so a 1/2" drive ratchet, breaker bar or impact gun must be supplied separately.

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