Banjo Bolt Size Finder
Find the correct banjo bolt for your application. Filter by AN dash compatibility, view thread size, internal bore diameter, hex size, torque specification, crush washer dimensions and seal type. Covers M10×1.0 through M22×1.5 metric banjo bolts.
Filter by AN Dash Compatibility (optional)
Bolt Specification — M10 × 1.0
Thread Size
M10
Pitch
1 mm
Bolt OD
10 mm
Internal Bore
6 mm
Hex Size
12 mm
Torque Min
15 N·m
Torque Max
20 N·m
AN Compatible
AN-3, AN-4
Verify bolt length — too long bottoms out before sealing.
Sealing Washer
Copper Crush Washer
Soft copper deforms to seal. Standard for brake and clutch systems. Replace on every removal.
OD
14 mm
ID
10.4 mm
Thickness
1 mm
Max Temp
300°C
Typical Applications
Torque Reference — All Sizes
| Bolt | Thread | Hex | Bore ID | Torque (N·m) | Torque (lb·ft) | Seal | AN Compat |
|---|---|---|---|---|---|---|---|
| M10 × 1.0 | M10 | 12 | 6 | 15–20 | 11.1–14.8 | copper | AN-3, AN-4 |
| M10 × 1.25 | M10 | 12 | 6 | 15–20 | 11.1–14.8 | copper | AN-3, AN-4 |
| M12 × 1.0 | M12 | 14 | 8 | 20–28 | 14.8–20.7 | copper | AN-4, AN-6 |
| M12 × 1.25 | M12 | 14 | 8 | 20–28 | 14.8–20.7 | copper | AN-4, AN-6 |
| M14 × 1.5 | M14 | 17 | 10 | 28–38 | 20.7–28.0 | aluminium | AN-6, AN-8 |
| M16 × 1.5 | M16 | 19 | 12 | 35–50 | 25.8–36.9 | aluminium | AN-8, AN-10 |
| M18 × 1.5 | M18 | 22 | 14 | 45–60 | 33.2–44.3 | aluminium | AN-10, AN-12 |
| M22 × 1.5 | M22 | 27 | 16.5 | 60–80 | 44.3–59.0 | aluminium | AN-12, AN-16 |
Installation Notes
Always use new crush washers. Copper and aluminium crush washers permanently deform on first tightening. Reusing them risks leaks, even if the washer visually appears undamaged.
Torque in steps. Hand-tighten first to align the banjo fitting, then torque to the lower spec value. Check for leaks before reaching maximum torque.
Thread identification. Always confirm thread pitch with a thread gauge — M10×1.0 and M10×1.25 look identical by eye. Cross-threading or using the wrong pitch will strip threads and cause failure.
Brake system critical. For brake and clutch line banjo bolts, use copper washers and replace on every removal. Brake system leaks are catastrophic — always bench-bleed and test before driving.