Cruising Solutions
FlexOfold Part Propeller Nut 7/8" - 9 UNC ø40 Shaft nut short
FlexOfold Part Propeller Nut 7/8" - 9 UNC ø40 Shaft nut short
SKU:T01K028
Model-specific Flexofold service hardware. Match the part number, blade count, and shaft or saildrive family before ordering; the checks below make the differences clear.
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- Ships in 1–5 business days
- 30-day returns
- Advice from real cruisers
FlexOfold Propeller Nut 7/8"-9 UNC short version is designed for Ø40mm propeller shafts and marine propulsion systems requiring precise and secure fastening. This FlexOfold Propeller Nut ensures proper thread engagement between the propeller and shaft, helping maintain alignment, torque retention, and dependable performance on the water.
Manufactured for compatibility with FlexOfold folding propeller assemblies, this short shaft nut features a 7/8"-9 UNC thread specification for accurate fitment on Ø40mm shafts. Using the correct FlexOfold Propeller Nut is essential for safe operation, as proper fastening reduces the risk of loosening caused by vibration, load variation, and continuous marine use.
Built for durability in both saltwater and freshwater environments, this marine-grade fastening component is designed to withstand corrosion, mechanical stress, and long-term exposure to harsh boating conditions. The FlexOfold Propeller Nut is suitable as a direct replacement part or as a spare kept onboard for routine maintenance and servicing.
Selecting the proper propeller shaft hardware is critical to overall drivetrain reliability. With its precision threading and compatibility with FlexOfold systems, this short propeller nut provides secure and consistent fastening performance for recreational and commercial vessels.
Specifications:
- Thread: 7/8"-9 UNC
- Shaft Diameter: Ø40mm
- Type: Short propeller shaft nut
- Application: Marine / boat propeller installation
Fitment check before ordering
FlexOfold Part Propeller Nut 7/8" - 9 UNC ø40 Shaft nut short is a model-specific propeller part. Match the part to the propeller already on the boat before ordering.
| Field | What to verify |
|---|---|
| Part family | Nut, washer, or locking hardware |
| Fitment clue from this page | Match shaft mount. |
| Check on your propeller | Blade count, shaft or saildrive family, hub markings, current part number, and water type for anodes. |
| If unsure | Send photos of the propeller open and closed, the old part, and any markings before ordering. |
Parts FAQ
Are FlexOfold parts interchangeable across propeller families?
No. Many anodes, cover plates, service kits, shock absorbers, nuts, and washers depend on blade count, shaft/saildrive family, and part number.
Should I buy parts before haulout?
Yes, if the part number is known. For unknown parts, gather photos and markings before haulout so the right parts can be ready.
Browse related items in FlexOfold propeller parts and accessories.
Shipping & lead times
Shipping & lead times
We're a small team of boaters and we pack orders within 1–5 business days (no weekend or holiday packing). You'll get an email with tracking as soon as a label goes on your box.
Specialty items — fire extinguishers (dangerous goods) and low-stock or built-to-order gear — can take longer; the product description will say so. On a tight timeline or meeting your boat somewhere specific? Contact us and we’ll work out the fastest way to get gear to you.
International orders ship DDU: local duties, taxes, and customs fees are the buyer’s responsibility. Full details in our shipping policy.
Returns & refunds
Returns & refunds
30-day returns from the date of purchase. Items must be unused, in the original packaging with all cables and accessories, with proof of purchase.
Contact us before shipping anything back — we’ll send the return form that must accompany your return. Fire extinguisher and lithium battery items carry a $15 administrative fee on returns.
Read the full refund policy.
Ask a cruiser before you buy
Ask a cruiser before you buy
Everyone here is a current or past cruiser — we’ve docked short-handed, re-rigged at anchor, and chased 12V gremlins too. Not sure this is the right fit for your boat? Send us your question before you order and we’ll give you a straight answer.
Check the exact part match
- Part number: compare the listing and the marking on the existing component whenever one is available.
- Propeller family: confirm blade count and whether the propeller is a shaft, saildrive, or composite model.
- Size and generation: check the hub, bolt, cover, blade, or anode dimensions and any model-year notes below.
- Service scope: verify what is included in the kit and retain the installation instructions for torque and assembly order.
Product specifications and details
FlexOfold Propeller Nut 7/8"-9 UNC short version is designed for Ø40mm propeller shafts and marine propulsion systems requiring precise and secure fastening. This FlexOfold Propeller Nut ensures proper thread engagement between the propeller and shaft, helping maintain alignment, torque retention, and dependable performance on the water.
Manufactured for compatibility with FlexOfold folding propeller assemblies, this short shaft nut features a 7/8"-9 UNC thread specification for accurate fitment on Ø40mm shafts. Using the correct FlexOfold Propeller Nut is essential for safe operation, as proper fastening reduces the risk of loosening caused by vibration, load variation, and continuous marine use.
Built for durability in both saltwater and freshwater environments, this marine-grade fastening component is designed to withstand corrosion, mechanical stress, and long-term exposure to harsh boating conditions. The FlexOfold Propeller Nut is suitable as a direct replacement part or as a spare kept onboard for routine maintenance and servicing.
Selecting the proper propeller shaft hardware is critical to overall drivetrain reliability. With its precision threading and compatibility with FlexOfold systems, this short propeller nut provides secure and consistent fastening performance for recreational and commercial vessels.
Specifications:
- Thread: 7/8"-9 UNC
- Shaft Diameter: Ø40mm
- Type: Short propeller shaft nut
- Application: Marine / boat propeller installation