Impact wrench sockets are available in a range of sizes, specifically referring to their drive size. The drive size is the measurement of the square connector on the socket that fits onto the output shaft of the impact wrench or ratchet.
According to common usage and references, the most popular drive sizes are 1/4 in, 1/2 in, 3/4, & 1 in. However, impact sockets are also manufactured for other drive sizes, including ⅜ and ⅝ of an inch.
Common Impact Socket Drive Sizes
The drive size dictates which impact wrench or tool the socket will fit onto. Socket sets are often organized by their drive size. For example, buying a ⅜ impact socket set means you receive a collection of sockets that all have a ⅜-inch square opening to fit a ⅜-inch drive impact wrench. Similarly, an ½ impact socket set contains sockets designed to fit a ½-inch drive.
Here are the drive sizes commonly available for impact wrench sockets:
- 1/4 inch
- 3/8 inch
- 1/2 inch
- 5/8 inch
- 3/4 inch
- 1 inch
While the drive size refers to the tool connection, the actual socket size that fits onto a bolt or nut (like 10mm, 19mm, 3/4 inch, etc.) varies widely depending on the fastener you are working with. The drive size ensures compatibility between the socket and the impact wrench.
