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Views: 0 Author: Site Editor Publish Time: 2026-05-28 Origin: Site
If you have ever needed to create a strong, reliable threaded hole in a thin piece of sheet metal, plastic, or tubing, you have likely encountered the rivnut (also known as a rivet nut or threaded insert). Rivnuts are incredibly versatile fasteners used across the automotive, aerospace, and manufacturing industries.
However, for DIYers and professional technicians alike, a common tooling question frequently arises: Can you use a standard rivet gun for rivnuts?
The short answer is no, you cannot use a regular pop rivet gun for rivnuts without highly specialized adapters or DIY modifications. While both fasteners share the word "rivet," they function on completely different mechanical principles.
In this comprehensive guide, we will break down the engineering differences between these two fasteners, explain why a standard tool fails, and guide you toward the right equipment—such as the professional-grade solutions from Rocol Tools—to ensure your project is a success.
To understand why a standard rivet gun won’t work on a rivnut, we must first look at how each fastener is designed to deform and lock into place.
A standard blind rivet (pop rivet) consists of two parts: the hollow rivet body and the central mandrel (the pin).
The Mechanism: The tool grabs the smooth mandrel and pulls it outward.
The Deformation: This action pulls the ball-shaped end of the mandrel into the rivet body, expanding it on the blind side.
The Break: Once maximum tension is reached, the mandrel snaps off at a predetermined weak point, leaving a permanently closed, hollow fastener.
A rivnut is a single-piece, internally threaded hollow tube.
The Mechanism: Instead of pulling a smooth pin, the installation tool must thread a matching bolt (mandrel) into the internal threads of the rivnut.
The Deformation: The tool then pulls the threaded mandrel linearly back toward the tool face. This collapses the unthreaded, hollow sleeve section of the nut, bulging it outward against the back of the panel.
The Release: Instead of snapping a mandrel off, the tool must be unthreaded from the newly installed nut, leaving clean internal threads ready to accept a standard bolt.
Attempting to insert a rivnut into a standard pop rivet gun will result in immediate failure for several distinct mechanical reasons.
A regular rivet gun uses a set of hardened steel jaws designed to clamp onto a smooth, solid metal pin. It has no mechanism to thread into the internal threads of a rivnut. Without a threaded connection, the gun cannot grip or pull a rivnut.
Pop rivet guns are designed for a high-force, short-distance snap action. Rivnuts require a highly controlled linear pull that relies on specific thread pitches. If you attempt to pull a rivnut without a threaded guide, you will instantly strip the internal threads, rendering the insert completely useless.
If you attempt to jam a bolt through a regular rivet gun to mimic a mandrel, the internal jaws of the standard gun will likely slip, damage the bolt threads, or become permanently jammed inside the tool housing.
To install threaded inserts correctly without damaging your host material, you need a dedicated tool designed specifically for the job.
A proper rivnut tool features a nosepiece containing a threaded mandrel matching the size of the nut you are installing (e.g., M5, M6, 1/4-20). The tool works by keeping the mandrel stationary relative to the threads while pulling it backward along a linear axis.
| Feature | Dedicated Rivnut Tool |
| Gripping Mechanism | Threaded Mandrel (screws into fastener) |
| Action Type | Linear pull followed by unthreading |
| Internal Threads | Preserved perfectly for later bolting |
| Material Compatibility | Steel, Aluminum, Stainless Steel |
When it comes to industrial-grade reliability and precision, Rocol Tools stands out as a premier provider of heavy-duty fastening solutions. Their lineup of dedicated rivnut setters is engineered to handle high-torque applications without stripping threads.
Whether you opt for a heavy-duty hand-lever rivnut tool or a pneumatic solution for production lines, Rocol Tools provides ergonomic designs and ultra-hardened mandrels that ensure consistent collapse pressure. This precision prevents under-setting (which causes the nut to spin) or over-setting (which strips the threads or warps the sheet metal).
Using a dedicated tool makes the installation process straightforward and secure. Follow these steps to achieve a professional-grade joint.
Measure the outside diameter of your rivnut body (not the head flange).
Drill a precise hole in your target material.
Tip: Always deburr the hole. Any burrs left behind can prevent the rivnut flange from sitting perfectly flush against the surface.
Select the correct mandrel size on your tool (e.g., from your Rocol Tools kit).
Thread the rivnut completely onto the mandrel until the head of the nut rests snugly against the nosepiece anvil.
Push the rivnut fully into the pre-drilled hole.
Squeeze the tool handles together firmly. You will feel resistance as the unthreaded sleeve portion of the nut collapses on the backside of the material.
Stop squeezing once the tool handles close completely or when you hit the pre-set stroke limit.
Spin the rear knob or trigger mechanism of the tool counter-clockwise to unthread the mandrel from the newly set insert.
Your threaded hole is now ready to receive a standard machine screw or bolt.
Finding the right combination of fasteners and setting tools is essential for long-term durability, especially in automotive and marine applications where vibration can loosen poor-quality fittings.
For those looking to stock up on hardware kits, metric or imperial threaded inserts, and versatile workshop supplies, 4Woo offers a comprehensive digital marketplace. Catering to both DIY enthusiasts and commercial garages, 4Woo provides a vast inventory of aluminum, steel, and stainless steel rivnuts in various grip ranges. Utilizing a reliable supplier ensures that the fasteners you use match the exact material specifications required to prevent galvanic corrosion.
When browsing platforms like 4Woo, make sure to match the rivnut material to the material of your workpiece:
Aluminum Rivnuts: Best for aluminum sheets, lightweight applications, and low-corrosion environments.
Steel Rivnuts: Ideal for automotive chassis work, providing high tensile and shear strength.
Stainless Steel Rivnuts: The premium choice for marine or outdoor applications where exposure to moisture is a constant factor.
Yes. In an emergency, you can create a manual rig using a high-tensile bolt, a matching nut, and a couple of washers. By holding the bolt steady and tightening the nut down against a washer, you can manually collapse the rivnut. However, this method is slow, requires significant physical effort, and risks stripping the threads if the bolt alignment shifts.
Spinning occurs when the rivnut was not collapsed completely during installation, or if the drilled hole was too large. Using a professional tool with an adjustable stroke, like those from Rocol Tools, eliminates this problem by ensuring the fastener expands completely to grip the walls of the hole.
While similar, plusnuts feature pre-slit bodies that expand into four distinct petals when collapsed. This distributes the clamping force over a much wider surface area, making them ideal for soft materials like plastics, fiberglass, or thin sheet metal where a standard rivnut might pull through.
While both pop rivets and rivnuts are excellent solutions for blind-side fastening, they rely on entirely different mechanical processes. Attempting to use a standard pop rivet gun to install a threaded insert will only result in broken components and ruined threads.
For a clean, reliable, and professional finish, always use a dedicated threaded insert setter. Utilizing high-performance gear from Rocol Tools guarantees that your installation forces are balanced correctly every time. Combined with a robust hardware inventory from trusted suppliers like 4Woo, you will be fully equipped to handle any automotive repair, custom fabrication, or industrial assembly challenge with confidence.
