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Angled close-up of a long 12-point deep socket showing the 12-point internal end and knurled ringLong socket showing square 3/8-inch drive recess, knurled grip ring, and cylindrical bodyTop view of long 12-point socket showing internal 12-point profile, knurled shoulder and stamped markings

3/8-Inch Drive 12-Point Long Hand Socket, 8mm to 24mm

Professional long hand socket with 12-point profile for precise fastener engagement. Chrome finish, 3/8-inch drive, sizes 8-24mm.

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Description

3/8-Inch Drive 12-Point Long Hand Socket, 8mm to 24mm

Brief Overview

This 3/8-inch drive long hand socket delivers extended reach for fasteners in recessed or hard-to-access locations. The 12-point geometry engages metric fasteners (8–24mm) with precision, minimizing cam-out and rounding risk compared to 6-point sockets. The satin chrome finish resists corrosion, while the knurled shoulder grip ensures secure handling during manual operation. For shops stocking a complete hand tool range, pair this with complementary 12-point deep sockets to maximize job flexibility.

Key Features

  • 12-Point Profile: Double-hex geometry reduces fastener damage and improves engagement angle on metric nuts and bolts
  • Extended Length: Deep socket design reaches fasteners in tight, recessed spaces without requiring ratchet extensions
  • Metric Range: Sizes 8mm through 24mm cover the majority of metric fastening applications in automotive and industrial work
  • Chrome Finish: Satin chrome plating provides corrosion resistance and professional appearance
  • Knurled Grip Ring: Textured shoulder for improved grip control during hand-operated use
  • Precise Manufacturing: Machined dimensions ensure consistent fit and durability across the size range

Why Distributors Profit from This Product

  • High-Frequency Consumable Replacement: Hand sockets wear, chip, and are frequently lost on job sites—driving repeat orders
  • Complementary to Power Tools: Shops running pneumatic systems need hand sockets for backup and precision work, creating dual-revenue opportunities
  • Margin-Friendly Category: Socket sets and individual sockets carry stable margins with low return rates
  • Essential Stock Item: Professional shops maintain multiple sets—one for each workbench and vehicle—supporting bulk orders
  • Low Logistics Cost: Compact, lightweight products reduce shipping expense and increase per-order profitability

Technical Specifications

Size (mm) Socket ID D1 (mm) D2 (mm) T (mm) L (mm)
8 523208 11.8 17 8 28
9 523209 13.2 17 8 28
10 523210 14.5 17 8 28
11 523211 15.7 17 8 28
12 523212 17 16 8 28
13 523213 18 16.5 8 28
14 523214 19.6 17 12 28
15 523215 20.9 18 12 28
16 523216 22 19 12 28
17 523217 23.4 20 12 30
18 523218 24.6 21 12 30
19 523219 26 23 14 30
20 523220 27.1 24 14 30
21 523221 28 25 14 30
22 523222 29.6 26 14 30
23 523223 31.6 27 14 30
24 523224 32 28 16 30

Drive Type: 3/8-inch square drive
Socket Profile: 12-point (double-hex)
Material: Chrome-plated steel
Finish: Satin chrome
Applications: Metric fastening, automotive assembly, industrial maintenance, machinery repair

Application Context

These sockets excel in jobs requiring reach and precision:

  • Engine bay work: Access spark plugs, sensors, and manifold fasteners in tight compartments
  • Suspension assembly: Reach bolts in recessed mounting points without extension bars
  • Machinery maintenance: Disassembly of gearboxes, pumps, and control systems where fasteners sit deep within housings
  • Precision fastening: 12-point geometry minimizes fastener wear on chrome-plated or specialty bolts

Value Proposition for Your Business

Stock these sockets individually or build complete metric sets for resale. The 8–24mm range covers approximately 85% of common metric fastening work, making them essential for any shop. Long sockets eliminate the need for costly extensions, reducing tool complexity and improving job efficiency. With proven durability and a familiar chrome finish, these sockets command customer confidence and justify competitive pricing.


Ready to stock? Order across the full 8–24mm range to serve diverse customer needs, or consider additional long socket sizes to round out your metric socket inventory.