Nuts and Washers for Underwater Connectors
Keywords： underwater connector nut washer, subsea connector hardware, jam nut underwater connector, stainless steel underwater nut, titanium subsea hardware, connector bulkhead nut, BCR installation hardware, connector washer kit, subsea connector spare parts
- IP68 waterproof
- Up to 7000m
- In-line, 1Pin, Male
- RV POWER GROUP
- [email protected]
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- Description
- Video
- Downloads
Nuts and washers are essential hardware for the installation, retention, and panel-mount integrity of all bulkhead (BCR/BH) and flange (FCR) underwater connectors in the RV Power Group range. Available in 316 Stainless Steel and Titanium, these precision-machined components ensure correct connector-to-panel clamping force, face sealing, and long-term corrosion resistance in seawater environments.
At a glance: 316 SS or Titanium | Precision-machined | Series-specific dimensions | Jam-nut and flange washer types | Available as individual items or hardware kits
Key Design Features
- Stainless Steel and Titanium Options: 316 SS for standard seawater service; titanium for weight-sensitive systems, bi-metallic corrosion avoidance, or magnetic-signature-controlled applications.
- Series-Specific Dimensions: Nuts and washers are precision-machined to match each connector series thread and flange OD — do not substitute hardware between series.
- Jam-Nut Design for BCR/BH Connectors: Jam-nuts clamp the BCR connector flange tightly against the panel face, compressing the face O-ring to the specified sealing force without over-compressing the chloroprene body.
- Flat and Locking Washer Pairs: Flat washer distributes clamping force across the panel face; optional locking washer prevents nut rotation due to vibration in dynamic service.
- Corrosion Resistance: 316 SS is resistant to seawater pitting and crevice corrosion under normal offshore conditions; titanium Grade 5 for extreme corrosion environments (hot brines, sour gas).
- Torque-Specified Installation: Each hardware set includes the recommended installation torque — critical for achieving specified face seal without damaging the connector thread or panel material.
- Compatible with All Standard Connector Series: Available for Micro Circular, Subsea Circular Standard, Low Profile, Metal Shell, AWQ, and High-Power series bulkhead connectors.
- Sold Individually or as Hardware Kits: Order individual nuts/washers as replacements, or as complete hardware kits with the correct items for each connector type.
- RV Power Group OEM Quality: Manufactured to the same dimensional tolerances as the connector body — guaranteed fit and sealing performance without field modification.
Specifications
| Parameter | Value |
|---|---|
| Material options | 316 Stainless Steel (standard) / Titanium Grade 5 (on request) |
| Types available | Jam-nut, flat washer, locking washer |
| Connector series covered | Micro Circular, Subsea Circular Standard, LP, Metal Shell 1500/2000, AWQ, High-Power, RMG/RMK Commercial Diving |
| Thread standards | Series-specific (specify connector model when ordering) |
| Surface finish | Passivated (SS); Anodised or uncoated (Ti) |
| Ordering | Specify connector series and model number — hardware is series-specific |
Why Hardware Quality Matters
Under-Torqued Nuts Cause Face-Seal Leaks
An under-torqued jam-nut leaves the BCR face O-ring incompletely compressed, allowing seawater ingress at the panel interface — not at the connector body itself. This is a common cause of subsea instrument flooding that is misattributed to the connector rather than its installation hardware.
Over-Torquing Damages the Connector Thread
Conversely, over-torquing with incorrect washers concentrates stress on the connector thread and can crack the chloroprene body at the thread root. Always use the specified washer type and installation torque.
Seawater Galvanic Compatibility
316 SS hardware is galvanically compatible with 316 SS connector shells. Titanium hardware is compatible with titanium connector bodies. Do not mix 316 SS hardware with titanium connector bodies (or vice versa) in immersed seawater without consulting the galvanic compatibility table — potential for accelerated corrosion of the less-noble metal.
Stock Critical Spares Before Deployment
Nuts and washers are low-cost items that are disproportionately critical when missing during an offshore installation campaign. Always carry a full spare set for every BCR/FCR connector on any subsea project.
Frequently Asked Questions
Q: Are nuts and washers interchangeable between connector series?
A: No — nuts and washers are series-specific. Always quote the connector model number when ordering hardware.
Q: Should I use a locking washer with the jam-nut?
A: For dynamic service (ROV panels, towed equipment), yes — a locking washer prevents nut rotation due to vibration. For static permanent installations, a flat washer with thread-lock compound is also acceptable.
Q: What installation torque should I use?
A: Torque values are series-specific and are included with each hardware set. Contact [email protected] for the torque specification for your connector model.
Q: Are titanium nuts/washers available for all series?
A: Yes — titanium hardware is available on request for all connector series. Lead times may be longer than standard SS hardware; contact us for availability.
Q: Can I order hardware kits for a complete installation?
A: Yes — hardware kits containing the correct jam-nut, flat washer, and locking washer for each BCR/FCR connector type are available. Contact [email protected] with connector model and quantity.
Contact [email protected] for pricing, availability, and technical specifications for all connector hardware and nuts/washers.