Hex Flange Bolts — Complete Size Reference
Complete reference for metric hex flange bolts from M6 to M16. Wrench sizes, torque specifications, and applications.
M610 mm wrench · 12 NmM813 mm wrench · 25 NmM1016 mm wrench · 50 NmM1218 mm wrench · 85 NmM1421 mm wrench · 130 NmM1624 mm wrench · 180 Nm
About hex flange bolts
Hex flange bolts have an integrated washer face under the head, which distributes load over a wider area. This eliminates the need for a separate washer.
Advantages
- Built-in washer distributes load
- Better resistance to vibration loosening
- Faster assembly (no separate washer)
- Common in automotive applications
Common applications
- Automotive assembly
- Sheet metal work
- Machinery with vibration
- Equipment where weight is a concern