What Torque Should I Use When Tightening Connectors?

## Quick Answer

Size-dependent: Small 1-2 Nm, Medium 3-5 Nm, Large 8-15 Nm. Use calibrated torque wrench.

## Torque by Size

| Size | Torque | Thread |
|——|——–|——–|
| Mini (<20mm) | 0.5-1.5 Nm | M12-M16 | | Small (20-40mm) | 1-3 Nm | M20-M24 | | Medium (40-60mm) | 3-8 Nm | M30-M42 | | Large (60-100mm) | 8-20 Nm | M50-M80 |## Consequences**Overtightening:** O-ring damage, thread damage **Undertightening:** Water ingress, pressure failure## ContactEmail: technical@hysfsubsea.com for torque specs

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John Zhang

(CEO & Lead Engineer)
Email: info@hysfsubsea.com
With over 15 years of expertise in subsea interconnect technology, I lead HYSF's R&D team in designing high-pressure (60MPa) solutions. My focus is on ensuring zero-leakage reliability for ROVs, AUVs, and offshore instrumentation. I personally oversee the validation of our custom connector prototypes.

Have a complex technical question?

John Zhang

(CEO & Lead Engineer)

With over 15 years of expertise in subsea interconnect technology, I lead HYSF’s R&D team in designing high-pressure (60MPa) solutions. My focus is on ensuring zero-leakage reliability for ROVs, AUVs, and offshore instrumentation. I personally oversee the validation of our custom connector prototypes.

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