Double Square Bits
The tip is shaped like an eight-pointed star. Also known as insert bits, use these in hand drivers or with a bit adapter in power tools.
For technical drawings and 3-D models, click on a part number.
8-Point Sockets
1/2" Square
Drive Size
Quickly position these sockets on square and external 8-point fasteners.
3/4" square drive size sockets work with wheel bearing locknuts on trucks and trailers.
For technical drawings and 3-D models, click on a part number.
| Drive Size | Overall Lg. | OD | Material | Each | |
1/4" Square Drive | |||||
|---|---|---|---|---|---|
| 1/4" | 7/8" | 15/32" | Chrome-Plated Steel | 0000000 | 00000 |
| 5/16" | 7/8" | 9/16" | Chrome-Plated Steel | 0000000 | 0000 |
| 3/8" | 7/8" | 21/32" | Chrome-Plated Steel | 0000000 | 0000 |
3/8" Square Drive | |||||
| 1/4" | 1 1/8" | 5/8" | Chrome-Plated Steel | 0000000 | 0000 |
| 5/16" | 1 1/8" | 5/8" | Chrome-Plated Steel | 0000000 | 0000 |
| 3/8" | 1 1/8" | 5/8" | Chrome-Plated Steel | 0000000 | 0000 |
| 7/16" | 1 1/8" | 3/4" | Chrome-Plated Steel | 0000000 | 0000 |
| 1/2" | 1 1/8" | 13/16" | Chrome-Plated Steel | 0000000 | 0000 |
| 9/16" | 1 1/8" | 15/16" | Chrome-Plated Steel | 0000000 | 0000 |
| 5/8" | 1 1/8" | 1 1/16" | Chrome-Plated Steel | 0000000 | 0000 |
| 11/16" | 1 1/8" | 1 9/64" | Chrome-Plated Steel | 00000000 | 0000 |
| 3/4" | 1 1/8" | 1 13/64" | Chrome-Plated Steel | 00000000 | 0000 |
| 13/16" | 1 1/4" | 1 19/64" | Chrome-Plated Steel | 00000000 | 00000 |
| 7/8" | 1 5/16" | 1 3/8" | Chrome-Plated Steel | 00000000 | 00000 |
1/2" Square Drive | |||||
| 3/8" | 1 1/2" | 7/8" | Chrome-Plated Steel | 00000000 | 0000 |
| 7/16" | 1 1/2" | 7/8" | Chrome-Plated Steel | 0000000 | 0000 |
| 1/2" | 1 1/2" | 29/32" | Chrome-Plated Steel | 0000000 | 0000 |
| 9/16" | 1 1/2" | 31/32" | Chrome-Plated Steel | 0000000 | 0000 |
| 5/8" | 1 1/2" | 1 1/16" | Chrome-Plated Steel | 0000000 | 0000 |
| 11/16" | 1 1/2" | 1 3/16" | Chrome-Plated Steel | 0000000 | 0000 |
| 3/4" | 1 1/2" | 1 9/32" | Chrome-Plated Steel | 0000000 | 00000 |
| 13/16" | 1 5/8" | 1 7/16" | Chrome-Plated Steel | 0000000 | 00000 |
| 7/8" | 1 3/4" | 1 1/2" | Chrome-Plated Steel | 0000000 | 00000 |
| 15/16" | 1 13/16" | 1 5/8" | Chrome-Plated Steel | 0000000 | 00000 |
| 1" | 1 15/16" | 1 11/16" | Chrome-Plated Steel | 0000000 | 00000 |
| 1 1/16" | 1 15/16" | 1 3/4" | Chrome-Plated Steel | 0000000 | 00000 |
| 1 1/8" | 2" | 1 13/16" | Chrome-Plated Steel | 0000000 | 00000 |
| 1 1/4" | 2" | 2" | Chrome-Plated Steel | 0000000 | 00000 |
3/4" Square Drive | |||||
| 2 3/8" | 3 1/2" | 2 5/8" | Steel | 000000000 | 00000 |
| 2 9/16" | 3 1/2" | 2 7/8" | Steel | 000000000 | 00000 |
| 2 3/4" | 3 1/2" | 3" | Steel | 000000000 | 00000 |
| 2 7/8" | 3 1/2" | 3" | Steel | 000000000 | 00000 |
| 3" | 3 1/2" | 3 1/4" | Steel | 000000000 | 00000 |
| 3 1/8" | 3 1/2" | 3 1/4" | Steel | 000000000 | 00000 |
| 3 1/4" | 3 1/2" | 3 1/2" | Steel | 000000000 | 00000 |
| 3 1/2" | 3 1/2" | 3 3/4" | Steel | 000000000 | 00000 |
| 3 3/4" | 3 1/2" | 4" | Steel | 000000000 | 00000 |
| 3 7/8" | 3 1/2" | 4" | Steel | 000000000 | 00000 |
| 4 3/8" | 3 1/2" | 4 5/8" | Steel | 000000000 | 00000 |
| 4 1/2" | 3 1/2" | 4 5/8" | Steel | 000000000 | 00000 |
| 4 7/8" | 3 1/2" | 5 1/8" | Steel | 000000000 | 00000 |
| 94 mm | 3 1/2" | 4" | Steel | 000000000 | 00000 |
| 100 mm | 3 1/2" | 4 1/4" | Steel | 000000000 | 00000 |
8-Point Impact Sockets
Quickly position these sockets on square fasteners. They are made to withstand the high torque and force of impact tools.
3/4" square drive size sockets require a locking retainer. Use with an impact wrench that has a pin-style socket retainer, or use a socket retaining ring with tools that have a hole- or hole-and-ring style socket retainer.
For technical drawings and 3-D models, click on a part number.
Sockets | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Clearance Depth | Retaining Rings | |||||||||
| Drive Size | Nut | Bolt | Compatible Retaining Ring ID | Material | Finish | Overall Lg. | Each | Each | ||
3/8" Square Drive | ||||||||||
| 1/4" | 1/4" | 1/2" | __ | Steel | Black Oxide | 1" | 0000000 | 00000 | 000000 | 00 |
| 5/16" | 9/32" | 1/2" | __ | Steel | Black Oxide | 1" | 00000000 | 0000 | 000000 | 00 |
| 3/8" | 5/16" | 1/2" | __ | Steel | Black Oxide | 1" | 0000000 | 0000 | 000000 | 00 |
| 7/16" | 21/64" | 1/2" | __ | Steel | Black Oxide | 1" | 0000000 | 00000 | 000000 | 00 |
| 1/2" | 3/8" | 9/16" | __ | Steel | Black Oxide | 1 1/16" | 0000000 | 00000 | 000000 | 00 |
| 9/16" | 9/16" | 5/8" | __ | Steel | Black Oxide | 1 1/8" | 0000000 | 00000 | 000000 | 00 |
1/2" Square Drive | ||||||||||
| 3/8" | 17/64" | 27/32" | __ | Steel | Black Oxide | 1 1/2" | 00000000 | 0000 | 000000 | 00 |
| 7/16" | 19/64" | 27/32" | __ | Steel | Black Oxide | 1 1/2" | 00000000 | 0000 | 000000 | 00 |
| 1/2" | 11/32" | 27/32" | __ | Steel | Black Oxide | 1 1/2" | 00000000 | 0000 | 000000 | 00 |
| 9/16" | 3/8" | 27/32" | __ | Steel | Black Oxide | 1 1/2" | 00000000 | 00000 | 000000 | 00 |
| 5/8" | 27/32" | 27/32" | __ | Steel | Black Oxide | 1 1/2" | 00000000 | 00000 | 000000 | 00 |
| 11/16" | 27/32" | 27/32" | __ | Steel | Black Oxide | 1 1/2" | 00000000 | 00000 | 000000 | 00 |
| 3/4" | 27/32" | 27/32" | __ | Steel | Black Oxide | 1 1/2" | 00000000 | 00000 | 000000 | 00 |
| 13/16" | 27/32" | 27/32" | __ | Steel | Black Oxide | 1 1/2" | 00000000 | 00000 | 000000 | 00 |
| 7/8" | 31/32" | 31/32" | __ | Steel | Black Oxide | 1 5/8" | 00000000 | 00000 | 000000 | 00 |
| 15/16" | 1 1/64" | 1 3/32" | __ | Steel | Black Oxide | 1 3/4" | 00000000 | 00000 | 000000 | 00 |
| 1" | 1 1/64" | 1 3/32" | __ | Steel | Black Oxide | 1 3/4" | 00000000 | 00000 | 000000 | 00 |
| 1 1/16" | 1 1/64" | 1 11/32" | __ | Steel | Black Oxide | 1 3/4" | 0000000 | 00000 | 000000 | 00 |
3/4" Square Drive | ||||||||||
| 7/8" | 35/64" | 1 1/32" | 1 5/8" | Steel | Black Oxide | 2" | 00000000 | 00000 | 0000000 | 00000 |
| 15/16" | 19/32" | 1 3/32" | 1 5/8" | Steel | Black Oxide | 2 1/16" | 00000000 | 00000 | 0000000 | 0000 |
| 1" | 5/8" | 1 5/32" | 1 5/8" | Steel | Black Oxide | 2 1/8" | 00000000 | 00000 | 0000000 | 0000 |
| 1 1/16" | 21/32" | 1 7/32" | 1 5/8" | Steel | Black Oxide | 2 3/16" | 00000000 | 00000 | 0000000 | 0000 |
| 1 1/8" | 45/64" | 1 15/64" | 1 5/8" | Steel | Black Oxide | 2 1/4" | 00000000 | 00000 | 0000000 | 0000 |
| 1 3/16" | 1 11/32" | 1 1/2" | 1 3/4" | Steel | Black Oxide | 2 1/2" | 0000000 | 00000 | 00000000 | 0000 |
| 1 1/4" | 3/4" | 1 13/32" | 1 5/8" | Steel | Black Oxide | 2 3/8" | 00000000 | 00000 | 0000000 | 0000 |
| 1 5/16" | 7/8" | 1 13/32" | 1 5/8" | Steel | Black Oxide | 2 3/8" | 0000000 | 00000 | 0000000 | 0000 |
| 1 7/16" | 1 1/2" | 1 1/2" | 1 3/4" | Steel | Black Oxide | 2 3/4" | 00000000 | 00000 | 00000000 | 0000 |
Clearance Depth | |||||||
|---|---|---|---|---|---|---|---|
| Drive Size | Nut | Bolt | Overall Lg. | Material | Finish | Each | |
1/2" Square Drive | |||||||
| 9/16" | 1/2" | 2 19/32" | 3 1/4" | Steel | Black Oxide | 00000000 | 000000 |
| 5/8" | 1/2" | 2 19/32" | 3 1/4" | Steel | Black Oxide | 00000000 | 00000 |
| 11/16" | 1 5/32" | 2 19/32" | 3 1/4" | Steel | Black Oxide | 00000000 | 00000 |
| 3/4" | 1 5/32" | 2 19/32" | 3 1/4" | Steel | Black Oxide | 00000000 | 00000 |
| 13/16" | 1 5/32" | 2 19/32" | 3 1/4" | Steel | Black Oxide | 00000000 | 00000 |
| 7/8" | 1 13/32" | 2 27/32" | 3 1/2" | Steel | Black Oxide | 00000000 | 00000 |
| 15/16" | 1 13/32" | 2 27/32" | 3 1/2" | Steel | Black Oxide | 00000000 | 00000 |
| 1" | 1 13/32" | 2 27/32" | 3 1/2" | Steel | Black Oxide | 00000000 | 00000 |
| 1 1/16" | 2 35/64" | 2 19/32" | 3 1/2" | Steel | Black Oxide | 00000000 | 00000 |
Extra-Deep 8-Point Impact Sockets
Extra length allows access to fasteners on long bolts. These sockets quickly position on square fasteners. They are made to withstand the high torque and force of impact tools
For technical drawings and 3-D models, click on a part number.
Wheel Bearing Locknut Socket Sets
 Display Rack |  6-Pin |  6-Point |
 6-Point Rounded |  8-Point |
Shaped and sized for compatibility with wheel bearing locknuts on trucks and trailers, the sockets in these sets make it easy to install and remove locknuts. They ensure the proper torque setting when you reinstall a locknut on your wheel, so you know it's safe and secure. These are square drive sockets for use with hand-driven tools, not impact wrenches. Made of steel, they grip locknuts tightly and prevent rounding.
4-pin and 6-pin sockets fit around retaining locknuts with slots or holes in the side. Also known as spanner sockets, they’re similar to tri-groove sockets but have four or six pins instead of three.
6-point sockets are designed for use with hex locknuts.
6-point rounded sockets fit the special rounded hex nuts found on some trucks.
8-point sockets fit 8-point nuts and square nuts.
Choose sets with a display rack to keep sockets contained and organized in a single location. The display rack mounts to walls and is labeled by socket size.
| Number of Pieces | Components Included | Includes | Container Type | Each | |
3/4" Square Drive—Steel | |||||
|---|---|---|---|---|---|
| 12 | 12 Sockets | 6-Point: 2 1/2", 2 9/16”, 2 5/8”, 2 3/4", 2 7/8”, 3 1/4", 3 1/2", 4", 4 1/8” 6-Point Rounded: 2 9/16" 8-Point: 3 1/4", 3 7/8" | Display Rack | 000000000 | 0000000 |
| 18 | 18 Sockets | 6-Pin: 2 5/8", 2 7/8", 3 5/8" 8-Point: 2 3/8", 2 3/4", 2 9/16", 2 7/8", 3", 3 1/8", 3 1/4", 3 3/8", 3 1/2", 3 3/4", 3 13/16", 3 7/8", 4 3/8", 4 1/2", 4 7/8" | Display Rack | 000000000 | 000000 |
8-Point Socket Sets
Quickly position these sockets on square fasteners.