A clevis pin is a U-shaped fastener with a cylindrical pin that fits through the legs of the U. It's commonly used in a wide range of applications to connect two components with a clevis-type connection. The clevis pin provides a secure and easily removable joint that can be quickly disassembled for maintenance or replacement.
Clevis pins come in various types to suit different applications:
Clevis pins are typically made from:
Clevis pins are used in numerous industries, including:
When selecting and using clevis pins, consider the following factors:
Load Capacity: Determine the maximum load the pin will be subjected to and choose a pin with sufficient strength.
Material: Select the appropriate material based on the desired properties, such as corrosion resistance or high strength.
Diameter and Length: Ensure the pin's diameter and length fit properly with the clevis and the holes it will be inserted into.
Safety Considerations: Use safety clevis pins or cotter pins to prevent accidental disengagement.
Pros:
Cons:
Safety Precautions:
Story 1: A construction worker was using a clevis pin to secure a scaffold. The pin was not properly tightened, and the scaffold collapsed, injuring the worker.
Lesson: Always ensure that clevis pins are properly tightened and secured.
Story 2: A farmer used a cotter clevis pin to connect a drawbar to a tractor. He did not insert the cotter pin correctly, and the pin fell out, causing the drawbar to detach from the tractor.
Lesson: Ensure that cotter pins are properly inserted and secured.
Story 3: A marine engineer used a standard clevis pin to connect a sail. The pin was not made from a corrosion-resistant material, and it quickly rusted, weakening the connection.
Lesson: Choose the correct material for clevis pins based on the environment in which they will be used.
Clevis pins are manufactured and tested according to various industry standards and regulations, including:
Table 1: Clevis Pin Load Capacities
Pin Diameter (in) | Tensile Load Capacity (lbs) |
---|---|
1/4 | 1,800 |
3/8 | 3,200 |
1/2 | 6,000 |
5/8 | 9,500 |
3/4 | 13,500 |
Table 2: Clevis Pin Materials and Properties
Material | Strength | Corrosion Resistance |
---|---|---|
Steel | High | Moderate |
Stainless Steel | High | Excellent |
Alloy Steel | Variable | Good |
Heat-Treated Steel | Very High | Moderate |
Table 3: Clevis Pin Types and Applications
Clevis Pin Type | Application |
---|---|
Standard Clevis Pin | General purpose |
Shouldered Clevis Pin | Prevents rotation, limits movement |
Cotter Clevis Pin | Added security with cotter pin |
Magnetic Clevis Pin | Holds pin securely during assembly |
Safety Clevis Pin | Spring-loaded latch prevents accidental disengagement |
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