Prop Tight Products for Sale – USA & International Delivery
Prop tight nuts are essential for securely fastening propellers to your boat’s shaft, preventing loosening and ensuring reliable performance. The Prop Tight brand offers precision-machined nuts designed for inboard and outboard propellers, providing easy installation and durable, long-lasting hold. Ideal for recreational boats, workboats, and commercial vessels, these nuts help maintain propeller alignment and safe operation on the water.
What it does
- Holds the prop firmly seated on the shaft taper
- Resists loosening from vibration, reverse thrust, or prop walk
- Often replaces the standard hex prop nut + jam nut setup
How it works
- Threads onto the prop shaft like a normal prop nut
- Uses mechanical locking geometry (often a captured or wedge-style design)
- As the prop is loaded forward or in reverse, the nut maintains preload instead of relaxing
- Typically, it is still used with a cotter pin or locking feature for safety
Why people use a Prop Tight Nut
- More secure than a single standard nut
- Cleaner installs than nut + jam nut combos
- Reduces chance of prop creep or fretting on the taper
- Popular on high-torque diesel inboards and commercial boats
Where you’ll see them
- Inboard shaft boats (gas & diesel) Sportfish, trawlers, workboats Boats that see frequent reversing or heavy loads
New
Brand: Prop Tight
Stock: In Stock
Prop Tight Naval Bronze Lock Nut (LN200) - For use with 2" Marine Propeller Shafts.
"Prop Tight" is a specific brand of superior propeller locking ..
from
$162.95
New
Brand: Prop Tight
Stock: In Stock
Prop Tight Naval Bronze Lock Nut (LN225) - For use with 2-1/4" and 2-1/2" Marine Propeller Shafts.
"Prop Tight" is a specific brand of superior pro..
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$212.95
New
Brand: Prop Tight
Stock: In Stock
Prop Tight Naval Bronze Lock Nut (LN275) - For use with 2-3/4" Marine Propeller Shafts.
"Prop Tight" is a specific brand of superior propeller lock..
from
$212.95
New
Brand: Prop Tight
Stock: In Stock
Prop Tight Naval Bronze Lock Nut (LN300) - For use with 3" Marine Propeller Shafts.
"Prop Tight" is a specific brand of superior propeller locking ..
from
$512.95
New
Brand: Prop Tight
Stock: In Stock
Prop Tight Naval Bronze Lock Nut (LN325) - For use with 3-1/4" and 3-1/2" Marine Propeller Shafts.
"Prop Tight" is a specific brand of superior pro..
from
$632.95
New
Brand: Prop Tight
Stock: In Stock
Prop Tight Naval Bronze Lock Nut (LN400) - For use with 4" Marine Propeller Shafts.
"Prop Tight" is a specific brand of superior propeller locking ..
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$962.95
Brand: Prop Tight
Stock: In Stock
Prop Tight Naval Bronze Nut Kit (CS100) - For use with 1" And 1 1/8" Marine Propeller Shafts.
"Prop Tight" is a specific brand of superior propelle..
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$148.95
Brand: Prop Tight
Stock: In Stock
Prop Tight Naval Bronze Nut Kit (CS150) - For use with 1 1/2" Marine Propeller Shafts.
"Prop Tight" is a specific brand of superior propeller locki..
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$179.95
New
Brand: Prop Tight
Stock: In Stock
Prop Tight Naval Bronze Nut Kit (CS175) - For use with 1 3/4" Marine Propeller Shafts.
"Prop Tight" is a specific brand of superior propeller locki..
from
$229.95
New
Brand: Prop Tight
Stock: In Stock
Prop Tight Naval Bronze Nut Kit (CS200) - For use with 2" Marine Propeller Shafts.
"Prop Tight" is a specific brand of superior propeller locking n..
from
$249.95
New
Brand: Prop Tight
Stock: In Stock
Prop Tight Naval Bronze Nut Kit (CS225) - For use with 2-1/4" and 2-1/2" Marine Propeller Shafts.
"Prop Tight" is a specific brand of superior prop..
from
$309.95
New
Brand: Prop Tight
Stock: In Stock
Prop Tight Naval Bronze Nut Kit (CS275) - For use with 2-3/4" Marine Propeller Shafts.
"Prop Tight" is a specific brand of superior propeller locki..
from
$599.95