Reusable Plastic Rivets: What They Are and How to Use Them
By LOC Precision / Public Missiles Ltd. | Published: 2026-09-06
Category: How-to Guides
Learn how reusable plastic rivets work in model rocketry, their benefits, and step-by-step installation tips for secure fin and mount attachments.
Quick Answer
Reusable plastic rivets are push-type fasteners that hold rocket components like fins and motor mounts without permanent adhesives. They allow easy disassembly and reuse, making them ideal for modular builds and maintenance. To use them, align parts, insert the rivet, and press the pin until it locks.
Plastic rivets are a handy fastening solution in model rocketry, especially for temporary or removable joints. Unlike traditional screws or epoxy, these push-type rivets can be installed quickly and removed without damaging parts, which is why they're popular for fin attachment and payload bay access.
In this guide, we'll explain what reusable rivets are, their advantages over other hardware, and provide a step-by-step process to use them effectively in your builds.
What Are Reusable Plastic Rivets?
Reusable plastic rivets, also known as push rivets or snap rivets, consist of a body and a mandrel (pin). When you push the pin into the body, it expands inside the hole, creating a firm hold. To release, you simply pull the pin back out, which allows the rivet to be removed and reused multiple times.
In rocketry, these rivets are often used to secure fins, rail buttons, or access panels where you might need to disassemble the rocket for transport or maintenance. They are lighter than metal fasteners and won't corrode, making them suitable for outdoor use.
Why Choose Reusable Rivets Over Screws or Epoxy?
Screws require pre-threaded holes and can strip, while epoxy creates a permanent bond that makes future repairs difficult. Reusable rivets offer a middle ground: they provide a secure hold yet can be removed cleanly, allowing you to swap components or adjust configurations.
They are also quicker to install—no tools beyond a simple push tool or your thumb are needed. For kits that use through-the-wall fin construction, such as those from LOC Precision, rivets can complement the design by reinforcing joints without adding much weight.
Step-by-Step Guide to Using Reusable Plastic Rivets
- Drill the correct hole size: Choose a drill bit that matches the rivet's diameter. The hole should be snug but not too tight. Test on scrap material first. A too-small hole can crack the material; too-large won't hold.
- Align the parts: Clamp or hold the parts together so holes align perfectly. Misalignment can cause the rivet to bind or not lock. Check alignment before inserting the rivet.
- Insert the rivet: Place the rivet's body into the hole from the outside, ensuring the flange sits flush against the surface. The flange should sit flat; if it doesn't, the hole may be too small.
- Push the pin to lock: Use a rivet tool or a flat punch to push the pin until it is flush with the body. You should feel a click or resistance. If the pin doesn't seat fully, the rivet may not hold.
- Test the hold: Gently pull on the parts to ensure the rivet is secure. If it slides, remove and try a larger size or check the hole. A secure rivet should not move under moderate force.
- Removal and reuse: To remove, use a pointed tool to push the pin out from the other side. The rivet can then be reused if not damaged. Be gentle to avoid breaking the rivet; inspect for wear before reuse.
Related LOC Precision Products
- Door Knob: The Door Knob is part of the LOC Custom series with factory pre-slotted airframe and through-the-wall fin construction, and includes a removable nose weight system (RNWS) for stability. When building a kit like the Door Knob, using reusable plastic rivets can make the removable nose weight adjustments easier, allowing you to change nose weight without permanent modifications.
- loc-i-magnum-25cd02385b4076a649e064f6-883920">LOC-I Magnum: The LOC-I Magnum is designed for first-time builders with a pre-slotted airframe, Kevlar shock cord, and laser-cut birch fins. For beginners, practicing rivet installation on a simple kit like the LOC-I Magnum helps build skills before moving to more complex builds.
Reusable plastic rivets offer a versatile, non-permanent fastening solution for model rocketry. By following these steps, you can attach and detach components with confidence, making your builds more adaptable and easier to maintain. Whether you're building a simple starter kit or a complex custom rocket, these rivets are a valuable addition to your hardware collection.
