Conquer stubborn metric fasteners with precision and staying power using the DeWalt 21 mm x 1/2 in. drive Metric 6 Point Deep Impact Socket. Forged steel construction and a black oxide finish combine for long-lasting durability in high-torque jobs.
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Size and drive — 21 mm metric size designed for 1/2" drive impact wrenches and adapters, delivering reliable engagement with minimal slippage.
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6-point grip — The 6-point profile seats hex fasteners securely, reducing rounding under heavy torque compared with typical 12-point sockets.
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Deep reach — Deep socket geometry extends reach for recessed bolts and long studs, helping you access hard-to-reach fasteners without contorting in tight spaces.
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Durable build — Forged steel provides toughness for repeated impact use; black oxide finish offers corrosion resistance in workshop and field environments.
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Impact-rated — Engineered to withstand the shocks and torque of impact tools, not just hand ratchets.
Technical specs
- Socket size: 21 mm
- Drive size: 1/2 in.
- Length: 3-7/32 in
- Number of points: 6
- Nut end outside diameter: 1-1/4 in
- Drive end outside diameter: 1-3/16 in
- Nut depth: 1-1/32 in
- Bolt clearance depth: 1-25/32 in
- Finish: Black oxide
- Material: Forged steel
- Impact rated: Yes
- Number in package: 1
Ideal for automotive maintenance, fleet service, and industrial repair where metric fasteners around 21 mm demand serious torque. The 1/2" drive pairs with a wide range of impact wrenches and adapters, while the deep profile helps you reach recessed bolts without disassembly. If you work in tight engine bays, under rails, or on heavy equipment, this socket delivers a reliable bite and lasting performance under demanding conditions.
Pro-tip: combine this socket with corresponding DeWalt impact tools for consistent engagement and extended tool life. Keep the socket clean and dry to preserve the black oxide finish, and store in a protective case to prevent surface rust in challenging environments.
