Measuring blind rivets primarily involves determining their body length, but the exact method depends on the shape of the rivet head. Based on technical data, the rivet body length (L) is measured differently for common head types.
Measuring Blind Rivet Body Length (L)
The total length of a blind rivet's body is a critical dimension for selecting the correct rivet for a specific application and material thickness (grip range). The standard method for measuring this length varies depending on whether the rivet has a dome, large flange, or countersunk head.
Measurement for Dome Head and Large Flange Rivets
For blind rivets featuring a Dome Head or a Large Flange Head, the body length (L) is measured from a specific point. According to technical specifications:
- The rivet body length (L) is always measured from under the head to the end of the body.
This method ensures that the head's thickness is not included in the body length measurement, which is crucial for determining the effective grip range of the rivet.
Measurement for Countersunk Head Rivets
Blind rivets with a Countersunk Head require a different approach to measuring the body length (L). Because the countersunk head is designed to sit flush or below the surface of the material, its measurement point differs:
- The rivet body length (L) is always measured from the top of the head to the end of the body.
This measurement method includes the height of the countersunk head as part of the overall length, as this head shape's integration into the material affects the total required length for proper seating.
Summary of Blind Rivet Length Measurement
To summarize the method based on head type:
- Dome Head / Large Flange: Measure from under the head to the body end.
- Countersunk Head: Measure from the top of the head to the body end.
Understanding these specific measurement points is essential for accurately identifying and selecting blind rivets for your fastening needs.
