Description
Br Jam Nut 7/8-9 Set 1 1/4 | Boat Supply Store
This jam nut set is engineered to prevent loosening of critical marine engine components under vibration and stress. Constructed from durable steel with a 7/8-9 thread size and a 1-1/4" outer diameter, it ensures reliable securement for propeller shafts or engine mounts. Essential for maintaining integrity in harsh saltwater environments encountered offshore from Galveston.
Key Features
- Secures vital engine assemblies against vibration
- Durable steel construction for longevity
- Precise 7/8-9 thread engagement
- 1-1/4" outer diameter for broad application
- Resists loosening in high-stress marine conditions
- Facilitates secure propeller shaft mounting
- Integral to reliable engine performance
- Designed for demanding maritime use
Specifications
| Product Specifications | |
|---|---|
| Thread Size | 7/8-9 |
| Outer Diameter | 1-1/4" |
| Material | Steel |
Who This Is For
Boaters requiring robust hardware for engine assembly and propeller shaft maintenance. Ideal for those performing DIY repairs or upgrades on their vessel's propulsion system.
How It Compares
| Feature | Br Jam Nut 7/8-9 Set 1 1/4 | Other Brand |
|---|---|---|
| Thread Size | 7/8-9 | 7/8-9 |
| Outer Diameter | 1-1/4" | 1-1/4" |
| Material | Steel | Steel |
Common Concerns Answered
Will this jam nut corrode in saltwater?
Constructed from durable steel, this jam nut is designed to withstand marine environments, providing reliable performance and resistance to corrosion when properly maintained.
Is this jam nut suitable for high-vibration applications?
Yes, jam nuts are specifically designed to provide a secondary locking action, significantly enhancing resistance to loosening caused by engine vibration.
What is the primary function of a jam nut in marine engines?
A jam nut's primary function is to prevent a primary nut from backing off its threaded fastener due to vibration or operational stress, ensuring component security.
Frequently Asked Questions
What is the exact thread pitch for this jam nut?
The thread pitch is 9 threads per inch (TPI) for the 7/8" diameter.
Can I use this jam nut on a propeller shaft?
Yes, this 7/8-9 jam nut with a 1-1/4" outer diameter is commonly used for securing propeller shafts and other engine components.
What is the material of this jam nut?
This jam nut is manufactured from robust steel for dependable marine service.
Does this product include a primary nut?
This listing is for the jam nut only, which is designed to work in conjunction with a primary nut to provide securement.
How do I determine if this jam nut is compatible with my engine hardware?
Verify that your existing hardware or the component requiring securement utilizes a 7/8-9 thread size and can accommodate a 1-1/4" outer diameter jam nut.
