Rivets are a permanent mechanical fastener. Before being installed, a rivet consists of a smooth cylindrical shaft with a head on one end. The end opposite the head is called the buck-tail. On installation the rivet is placed in a punched or drilled hole, and the tail is upset, or bucked (i.e., deformed), so that it expands to about 1.5 times the original shaft diameter, holding the rivet in place. To distinguish between the two ends of the rivet, the original head is called the factory head and the deformed end is called the shop head or buck-tail.
Because there is effectively a head on each end of an installed rivet, it can support tension loads (loads parallel to the axis of the shaft); however, it is much more capable of supporting shear loads (loads perpendicular to the axis of the shaft). Bolts and screws are better suited for tension applications.
Fastenings used in traditional wooden boat building, such as copper nails and clinch bolts, work on the same principle as the rivet but were in use long before the term rivet was introduced and, where they are remembered, are usually classified among nails and bolts respectively.
14 comments:
Great explanation of rivets! I always wondered about how they’re installed and their different types of heads.
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This article cleared up a lot of confusion about the differences between bolts and rivets. Thanks for the detailed breakdown!
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I didn't realize how much rivets depend on shear loads. This is really helpful for understanding their strength.
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Such a fascinating historical perspective on traditional wooden boatbuilding and rivets! Never thought of them as a predecessor to modern fasteners.
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I appreciate the clear distinction between the factory head and shop head. That really helped me understand the installation process better.
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Do you have any tips for choosing the right rivet for specific applications?
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It’s amazing to think how rivets have been used in boatbuilding for centuries! Such a classic technique.
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So rivets are better for shear loads – does this mean they’re weaker in tension? That’s something I didn’t know before!
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This blog post is a great resource for anyone new to mechanical fasteners. I had no idea there was such a difference between rivets and screws.
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I’ve always used bolts for heavy-duty projects, but now I see why rivets might be the better choice for certain applications.
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It’s great to learn that the deformed end of the rivet is called the shop head. I’ll never forget that detail!
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I find it really interesting that rivets work for tension loads too, but are more suited to shear loads. Makes me think about how I’ve been using them!
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This blog has given me a whole new appreciation for the role of rivets in construction. They seem like such a simple yet crucial part of many projects.
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What type of rivets would you recommend for use in more industrial projects, like construction or heavy machinery?
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