Socket wrench
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A socket wrench is a type of spanner that uses a closed socket format, rather than a typical open wrench/spanner to turn a fastener, typically in the form of a nut or bolt.
Socket set with ratchet (above), four hex sockets and a universal joint
Torx socket
"6 point" hexagonal socket
Splined socket
Torque wrench
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A torque wrench is a tool used to apply a specific torque to a fastener such as a nut, bolt, or lag screw. It is usually in the form of a socket wrench with an indicating scale, or an internal mechani
Socket wrench
…Impact wrench Torque wrench Table of American socket and nut sizes in inches…
Conceptual illustration of J. H. Sharp's patented wrench
Detailed view of the torque display scale on a beam type torque wrench. This one is displaying an applied torque of about 160 in.lbf or 18 N·m.
Click-type torque wrench with socket attached, adjusted by turning the knurled handle