The DeWalt 21 mm x 1/2 in. drive Metric 12 Point Deep Socket is engineered to take on tough fasteners with precision and ease. Built for professional use, this deep socket combines a 21 mm metric size with a robust 1/2 in. drive, giving you the leverage you need to access recessed bolts in automotive, equipment, and shop environments. The 12-point design ensures quick alignment and a secure grip, even in tight spaces where a standard 6-point socket struggles.
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Socket size: 21 mm
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Drive size: 1/2 in.
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Material: Chrome Vanadium Alloy Steel
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Finish: Polished Chrome
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Length: 3-1/8 in.
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Number of points: 12
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Nut end outside diameter: 1-3/32 in.
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Drive end outside diameter: 1-3/32 in.
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Nut depth: 1-13/32 in.
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Bolt clearance depth: 2-7/32 in.
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Impact rated: No
Why this DeWalt deep socket stands out
Designed for reliability under demanding tasks, this metric 21 mm deep socket provides deeper reach than standard sockets, allowing you to engage fasteners that sit flush or recessed behind components. The polished chrome finish isn’t just about looks—it delivers corrosion resistance and easy maintenance, so your tool stays smooth and ready for the next job. The Chrome Vanadium alloy delivers long-term durability and precise fit, reducing cam-out and marring on fasteners in high-torque scenarios.
Ideal use cases
- Automotive maintenance, such as accessing axle, brake line, or transmission fasteners that sit deeper than typical shallow sockets.
- Bike and motorcycle maintenance where clearance is limited and a deeper reach is required.
- Machine shop or equipment repair projects that demand a secure grip on metric fasteners in tight spaces.
- Roof racks, batteries, or any assembly where recessed nuts must be reached without removing surrounding parts.
How this socket helps you work smarter
The 12-point configuration provides versatile engagement with 12-point fasteners and many hex-style nuts, enabling quicker alignment in cramped work areas. The 3-1/8 inch length pairs with a standard 1/2 inch drive ratchet or breaker bar to deliver steady torque without slipping. Its precise 21 mm sizing ensures compatibility with common metric hardware, reducing cross-threading and cam-out risks during torque-intensive tasks.
Care, compatibility, and tips
- Use with a compatible 1/2 in. drive ratchet or torque wrench for optimal performance.
- Avoid applying impact force; this socket is not impact-rated and is best used in hand-tool applications.
- Wipe clean after use to remove dirt and grease, then store in a dry location to preserve the polished chrome finish.
- Pair with DeWalt metric socket sets for a complete, road-ready toolkit that covers most 21 mm fasteners you’ll encounter.
