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Top view of a chrome 6-point socket showing hex opening and embossed ASTA brandAngled side view of chrome 6-point socket with ASTA markingDrive-end view of chrome socket showing 6-point interior, square drive recess and detent hole

3/4-Inch Drive 6-Point Socket, 21mm

Chrome-plated 6-point socket for 3/4-inch drive tools. Precision-machined 21mm hex for reliable fastening and minimal cam-out.

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Description

3/4-Inch Drive 6-Point Socket, 21mm

Brief Overview

This 3/4-inch drive 6-point socket delivers precision fastening for medium-duty industrial and automotive work. The chrome-plated steel construction ensures corrosion resistance and durability across repeated use cycles. The 6-point internal geometry reduces fastener rounding, a critical advantage when working with worn or delicate bolt heads. Stock this size alongside longer-reach 41mm variants and larger 22mm sockets to meet the full spectrum of socket drive requirements in your shop.

Key Features

  • 6-Point Internal Geometry: Distributes load across six contact points, minimizing cam-out and protecting fastener corners
  • Chrome-Plated Finish: Corrosion-resistant coating extends tool lifespan in damp or salt-prone environments
  • Precision-Machined Construction: Tight tolerances ensure consistent fit on 3/4-inch drive handles and extensions
  • Detent Pin Compatible: Side hole accommodates locking ball for secure attachment to pneumatic or hand-held drive tools
  • Compact 50mm Overall Length: Suitable for confined spaces without sacrificing drive engagement

Business Advantages

This socket fills a critical gap in the 21mm fastener market. Mechanics and technicians reach for 6-point sockets when precision and fastener protection matter most—brake systems, suspension work, and engine assembly. The compact 50mm length appeals to shops managing space-constrained toolkits. Stock depth in this size drives repeat orders and positions your operation as a reliable source for complete drive sets.

Technical Specifications

Specification Value
Drive Size 3/4 inch
Socket Size 21mm
Point Configuration 6-Point
Overall Length 50mm
Head Diameter (D1) 31.2mm
Head Diameter (D2) 33mm
Wall Thickness 14.0mm
Material Chrome-plated steel
Drive Type Square drive (3/4") with detent pin hole

Reseller Value

Order in bulk to capture margin on the full 3/4-inch 6-point socket range. This 21mm size, paired with adjacent sizes (22mm, 24mm, 27mm), creates a compelling bundled offering for mechanics transitioning from light-duty to industrial-grade tooling. The chrome finish and proven 6-point geometry justify a premium position against commodity alternatives.