M6 Bolt — 10mm Socket/Wrench
The standard socket size for an M6 hex bolt is 10mm. Nearest imperial equivalent: 3/8".
Result
Answer
10mm socket/wrench
Standard
Wrench/Socket Size10mm
Bolt Diameter6mm
Nearest Imperial Socket3/8"
Bolt SystemMetric (DIN/ISO)
A standard M6 hex bolt or nut uses a 10mm wrench or socket. The nearest imperial equivalent is a 3/8" socket, which may work in a pinch but is not an exact match.
Note
Reference value from published fastener data. Always verify with the fastener manufacturer for critical applications.
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About M6 Bolts
An M6 hex bolt has a 6mm shaft diameter and requires a 10mm socket or wrench to turn. This is a standard metric fastener size, widely used in automotive work, machinery, and general construction. The nearest imperial socket is 3/8" — it may work in an emergency, but the size difference risks rounding the bolt head. Always use the correct 10mm socket when possible.