3/8 Inch Drive Hex Bit Impact Socket 4-12mm

When a single hex fastener stands between you and a finished job, reach for the Teng Tools 12 mm hex bit impact socket. Built to the DIN metric standard and sized for a 3/8 inch square drive, this individual socket lets you apply impact-wrench force directly to 12 mm internal-hex cap screws, caliper bolts, and structural fasteners.

The impact-rated body is designed to absorb the repeated hammer blows of pneumatic and cordless impact drivers without cracking or splitting — a critical distinction from standard chrome sockets that can shatter under percussive load. The hex tip is machined to tight DIN tolerances, seating deeply into the fastener recess to spread load evenly and minimize cam-out even at high torque.

Sold individually, this socket is the practical choice when you need to replace a worn piece in an existing kit, add a specific size to your collection, or stock a service cart with only the sizes your work actually demands. No oversized case, no unused impact sockets gathering dust — just one precision tool ready for the next brake job or assembly task.

Compatible with any 3/8 inch drive ratchet, breaker bar, or impact tool, the socket fits seamlessly into the drive system you already own. Whether you are pulling caliper brackets on a lift, assembling structural frames, or working through metric bolts on a production line, this tool earns its place in the drawer.