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Westward 1/2 inch drive 21 mm 12 point metric socket

Westward

Westward 53YU72 1/2" Drive 21 mm Metric Socket 12 Pt

SKU CH-YVVY-16QES

A 1/2" drive metric socket with 12-point alloy steel construction fits 21 mm fasteners

  • Product typeSocket
  • 1/2" drive fits standard ratchets and breaker bars
  • 12-point profile engages metric fasteners from multiple angles
  • 21 mm metric size covers common automotive and machinery bolts
  • Alloy steel construction resists rounding under high torque
  • California Proposition 65 warning applies to this product

1/2" Drive Metric Socket 21 mm

This 12 point metric socket fits a 1/2 inch drive and is sized for 21 mm fasteners. It is made from alloy steel for durability in professional use. The socket suits mechanics, contractors and other tradespeople who need a reliable hand tool for everyday fastening tasks. It is a practical addition to any tool box.

Alloy Steel Construction

The alloy steel body resists wear and deformation under high torque. A 12 point opening engages fasteners at multiple angles, which helps in tight spaces where swing room is limited. The 1/2 inch square drive is compatible with standard ratchets, breaker bars and torque wrenches. No special adapters are required for typical workshop equipment.

Replaces Worn or Missing 21 mm Sockets

This socket replaces a damaged or lost 21 mm piece in an existing 1/2 inch drive set. The upgrade is worthwhile when the old socket shows rounding, cracks or excessive play on the fastener. It also fills a gap if your current set skips this size. Buyers who need SAE sizing or a different drive size will not be served by this item.

How it compares

Measured against everything we stock in Pliers, Wrenches & Gripping Tools, at today’s prices. Recalculated every night.

Price $2.99
Cheaper than about 98% of the 2,110 comparable items (median $23.99).

Specifications

Product
Brand nameWESTWARD
Product typeSocket

Questions about this item

What does the 1/2" drive size limit in practice?

The 1/2" square drive fits standard 1/2" ratchets, breaker bars and torque wrenches, so torque is limited by the tool and fastener rather than the socket itself.

What clearance does the 21 mm, 12-point socket need to fit on a fastener?

A 21 mm hex or bi-hex bolt head with enough surrounding space for the socket's outer diameter and wall thickness to seat fully.

How is the socket installed on a 1/2" drive tool, and what step is often missed?

Align the socket's square drive with the tool's anvil, press until the detent ball clicks into the socket's retention groove, then tug to confirm it is locked.

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