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Angled view of a silver long socket showing 3/8" square drive recess, knurled ring and embossed logoSide perspective of a long 12-point socket showing internal 12-point profile and knurled bandTop view into a long 12-point socket showing internal twelve-point profile and embossed brand on the exterior

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

Professional 12-point long hand sockets with 3/8-inch drive, chrome finish, and full size range for precision fastening work.

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Description

3/8-Inch Drive 12-Point Long Hand Socket

Brief Overview

This 3/8-inch drive long hand socket delivers reliable, precise fastening for professional mechanics and technicians. The 12-point design accommodates both hex and double-hex fasteners, providing greater accessibility in tight work spaces compared to 6-point alternatives. Available in 16 sizes spanning 8mm through 24mm, these sockets integrate seamlessly into existing 3/8-inch drive tool systems. Pair with complementary long-reach sockets in alternate point profiles or additional metric socket sizes to build a comprehensive fastening kit.

Key Features

  • 12-Point Internal Profile – Engages both hex and double-hex fasteners; reduces the risk of corner rounding on softer materials
  • Long Depth Design – 63mm length (or 6mm for the 24mm size) provides extended reach into recessed fastener locations
  • 3/8-Inch Square Drive – Compatible with standard 3/8-inch ratchets, torque wrenches, and pneumatic tools
  • Chrome-Plated Finish – Corrosion-resistant surface suitable for workshop and field environments
  • Knurled Grip Band – Embossed ring near the drive end aids handling and manual control during hand-ratchet operation
  • Full Metric Size Range – 8mm through 24mm covers the majority of automotive and industrial fastening applications

Business Advantages for Resellers

  • High-Volume Opportunity – 16 sizes within a single product line encourages bulk SKU adoption and shelf stocking
  • Durable, Low-Wear Design – Chrome plating and precision 12-point geometry reduce customer warranty claims and repeat replacements
  • Broad Market Appeal – Suitable for automotive repair shops, industrial maintenance, OEM assembly, and DIY/prosumer segments
  • Competitive Margin – Long hand sockets are staple items with consistent demand and stable pricing
  • Accessory Bundling – Easily paired with ratchets, extensions, and universal joints for value-add kits

Technical Specifications

Size (mm) D1 (mm) D2 (mm) T (mm) L (mm) Part ID
8 11.8 17 9 63 543208
9 13.2 17 9 63 543209
10 14.5 17 9 63 543210
11 15.7 17 12 63 543211
12 17 16 12 63 543212
13 18 16.5 12 63 543213
14 19.6 17 15 63 543214
15 20.9 18 15 63 543215
16 22 19 15 63 543216
17 23.4 20 15 63 543217
18 24.6 21 18 63 543218
19 26 23 18 63 543219
20 27.1 24 18 63 543220
21 28 25 18 63 543221
22 29.6 26 21 63 543222
23 31.6 27 21 63 543223
24 32 28 21 6 543224

Note: L dimension for 24mm size is 6mm; all others are 63mm. D1 and D2 represent socket wall dimensions relevant to fastener engagement geometry.

Application Context

The long depth (63mm nominal) positions these sockets for fasteners recessed behind hose connections, valve bodies, or protective guards. The 12-point geometry is particularly valuable in automotive transmission work, fuel system repair, and industrial equipment assembly where fasteners may have worn or partially rounded corners.

Ready to stock a complete 16-size range? Order the full set or select individual sizes to match your shop's fastening requirements. These sockets are essential for any professional tool distributor serving automotive and industrial markets.