Tools & DIY / Guide
Impact Sockets and Hand-Ratchet Sockets: Check the Tool Rating
Match sockets to the tool’s impact rating and drive, then check depth, retention and clearance for the specific fastener.
Read the markings and manual for the tool you will use. An impact wrench applies repeated blows through the drive. Use sockets and accessories explicitly rated for impact service with it, and follow the tool manufacturer’s directions. Similar-looking sockets can have different ratings.
Check the drive and retention
Confirm the square drive size and whether the wrench uses a friction ring, pin or another retention system. Check that the socket can seat and retain correctly. If you need an extension or adapter, verify its rating and compatibility as well. Wear the protection the tool manual specifies.
Measure clearance at the fastener
Compare the outside wall dimensions and how far the socket can reach. Clearance can be tight inside a wheel recess or under a bracket. Use the exact size that seats fully on the fastener. Choose the socket before committing to a larger set if one recessed job is the reason for the purchase.
Finish to the specified torque
Follow the equipment manufacturer’s tightening procedure and use the recommended torque tool where a value is specified. If you mainly work by hand, start with the socket sizes and reach your ratchet actually needs.
