Description
Size 24 Shear Pins (5/Bx) | Boat Supply Store
Engineered to fracture at a specific stress point, these Size 24 shear pins safeguard your outboard motor's lower unit from catastrophic damage. A properly sized shear pin will yield under excessive load, such as a submerged obstruction impacting the propeller. This pack contains five 5/16" x 2-1/4" pins, crucial for maintaining the operational integrity of trolling motors and smaller outboard engines, particularly in shallow Texas bays where debris is common.
Key Features
- Protects your outboard's lower unit from severe damage
- Designed to shear at a predetermined stress load
- Prevents costly gearbox and drive shaft failure
- Essential for trolling motors and smaller outboards
- Includes five pins per pack for convenience
- Corrosion-resistant construction for marine environments
- Exact size 24 specification
- Reliable HANDI-MAN MARINE quality
Specifications
| Product Specifications | |
|---|---|
| Size | 24 |
| Quantity | 5 per box |
| Diameter | 5/16 inch |
| Length | 2-1/4 inch |
Who This Is For
Boaters operating outboard motors or trolling motors that utilize shear pins for drive protection. Essential for owners who frequently navigate varied water depths and conditions.
How It Compares
| Feature | Size 24 Shear Pins (5/Bx) | Generic Brand Shear Pins |
|---|---|---|
| Size | 24 | Typically less capable |
| Quantity | 5 per box | Typically less capable |
| Diameter | 5/16 inch | Typically less capable |
| Length | 2-1/4 inch | Typically less capable |
Common Concerns Answered
What happens if I use the wrong size shear pin?
Using a shear pin that is too strong (larger size) will not fracture under an appropriate load, leading to damage to the more expensive lower unit components. A pin that is too weak may shear unnecessarily, causing unplanned downtime.
How often should I replace shear pins?
Shear pins are sacrificial parts designed to break. They should be replaced immediately after they have sheared. It is also prudent to carry spares and inspect them periodically for corrosion or damage, especially after striking submerged objects.
Are these pins suitable for all outboard motors?
These are Size 24 pins, commonly used for specific horsepower ranges and trolling motors. Always consult your outboard motor's service manual to confirm the exact shear pin size and type required for proper application.
Frequently Asked Questions
What is the primary function of a shear pin?
The primary function is to act as a safety device, intentionally breaking under excessive torsional load to protect the propeller shaft and gearbox from severe damage caused by impacts with submerged objects or propeller entanglement.
What does 'Size 24' refer to in shear pins?
'Size 24' is a specific industry designation that corresponds to a precise diameter and length combination, typically 5/16 inch diameter by 2-1/4 inches length, designed to shear at a particular torque rating.
Can these pins be used for both forward and reverse gears?
Shear pins are typically used in the propeller shaft assembly to protect the drive system. They are not specific to forward or reverse gear selection, but rather the overall torque applied to the propeller.
How do I know if my shear pin has sheared?
If your propeller suddenly stops turning or spins freely after encountering resistance or an impact, it is highly likely that the shear pin has sheared. You will not be able to propel the boat.
What materials are these shear pins made from?
These HANDI-MAN MARINE shear pins are manufactured from materials specifically chosen for their tensile strength and ability to fracture cleanly under designed stress, ensuring reliable protection in harsh marine environments.
