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M6 flange bolt size
10 mm wrench
across-flats spanner / socket size for M6 flange
M6 flange bolt — automotive and sheet assemblies.
Full specification
| System | Metric flange |
| Nominal diameter | 6 mm |
| Thread pitch | 1.0 mm |
| Wrench / spanner (across flats) | 10 mm |
| Tap drill | 5.0 mm |
| Clearance hole | 6.6 mm |
| Common grade / class | 10.9 |
| Typical torque | 12 Nm (8.9 ft·lb) |
| Closest other-system size | ~1/4 inch flange |
🔧 Torque unit converter
Pre-filled with the typical torque for M6 flange (10.9, dry). Edit any field to convert.
⚠️ Torque values here are general references for 10.9 on clean, dry threads. Lubrication, coatings, and the joint material change the figure significantly. For structural, automotive, or safety-critical work, always use the torque specified by the manufacturer or engineer.
About M6 flange
M6 flange bolts spread load with a built-in washer face, ideal for sheet metal.
The serrated flange resists loosening, so a separate washer is usually unnecessary.
Frequently asked questions
- What size wrench or spanner fits M6 flange?
- M6 flange bolt uses a 10 mm wrench or spanner, measured across the flats of the hex head.
- What is the torque for M6 flange?
- A typical tightening torque for M6 flange bolt in 10.9 on dry threads is about 12 Nm (8.9 ft·lb). Always confirm against the manufacturer spec for important joints.
- What thread pitch and tap drill does M6 flange use?
- M6 flange bolt has a thread pitch of 1.0 mm and uses a 5.0 mm tap drill, with a 6.6 mm clearance hole.