The Complete Guide to Rivnut Installation: Tools, Techniques, and Best Practices

Rivnut rivet nuts, often just called rivet nuts or Rivnuts, are threaded inserts that create a strong thread in thin materials such as sheet metal or plastics. Commonly used in automotive, industrial, and DIY projects, they allow you to secure bolts or screws in places where traditional nuts bolts or welding might not work.

Below, we’ll review their benefits, the tools required, and best practices for installation.

What Are Rivnut Rivet Nuts?

A Rivnut rivet nut installs from one side of your workpiece, forming a permanent anchor even in limited thickness. Once set, it provides a robust, secure thread. These threaded inserts are especially useful for thin sheets, tubular shapes, or compartments with difficult access.

Key Advantages

• Single-Sided Installation: Perfect for frames or enclosures.

• Strong Thread in Thin Materials: Supports repeat fastening without damaging base material.

• Varied Finishes: Commonly stainless steel, aluminium, or standard steel.

• Large Flange Options: Distribute load over a wider area.

Extensive Range of Products and Sizes

Rivnut rivet nuts come in multiple sizes (M3–M12 or imperial equivalents) and finishes to fit different environments. Stainless steel types offer corrosion resistance, while steel or aluminium versions suit general needs. For extra grip, a large flange model helps distribute force across a bigger surface, preventing damage to delicate materials.

Stock Availability in Australia

In Australia, many suppliers keep a broad range in stock for quick shipment. If you require specialty variants, like closed-end or rubber expansion, some may be custom orders. Always review grip ranges and hole diameters before purchasing.

Comparing Rivnuts, Rivets, and Traditional Nuts and Bolts

• Rivets: Permanent fasteners with no threads.

• Nuts and Bolts: Require dual access, unsuitable for tight or enclosed spaces.

• Rivet Nut/Rivet Nuts: Create a reusable, strong anchor in thin materials, ideal for single-sided installs.

Tools For Rivnut Rivet Nut Installation

Choosing the right tool is crucial for a reliable installation:

Manual Tools

• Operated by hand or lever, easy for small-scale or occasional jobs.

Pneumatic Tools

• Use compressed air for faster, consistent pull force, excellent for large batches.

Battery-Operated Tools

• Cordless mobility; adjustable tension for different sizes or materials.

All require a mandrel that threads into the Rivnut rivet nut. The pulling action expands the insert, locking it into the material. Check your tool for replacement mandrels suited to your specific fasteners.

Proper Installation Techniques

Drill and Deburr

• Match hole size to the Rivnut rivet nut spec. Clean edges thoroughly.

Thread the Insert

• Spin the Rivnut onto the tool’s mandrel, making sure it’s snug.

Set the Rivnut

• Insert into the pre-drilled hole and activate the tool (squeeze, trigger, or pneumatic pull).

Unscrew and Inspect

• Release the tool, leaving the Rivnut rivet nut anchored. View it for flushness and stability.

Best Practices for Strong, Reliable Threads

Select Good Products

• Use reputable products for consistent quality. Inferior units may spin or strip.

Match Materials

• Pair stainless steel rivet nuts with stainless parts if corrosion resistance is needed.

Use the Correct Pull Force

• Over-compression can distort the Rivnut rivet nut or your base material.

Review and Maintain Tools

• Regularly review your tools for wear, especially the mandrel, and keep spares in stock.

Specialty Rivnut Rivet Nuts

For specialised applications, you can order sealed, knurled, or countersunk designs, among others. If extra load distribution is essential, a large flange variant might be perfect. Always review product datasheets to confirm compatibility with your applications and required thickness range.

Why We Recommend Rivnut Rivet Nuts For Thin Materials

• Strong and Reliable: Provide a solid anchor in thin sheets.

• Good Versatility: Work with many types of materials.

• Easy to Set: Especially with pneumatic or cordless tools.

• Wide Range of Products: Includes multiple finishes, sizes, and head styles.

• Available in Stock: Quick order-fulfilment from Australian suppliers.

Final Review and Next Steps

Rivnut rivet nuts enable single-sided fastening in places where conventional nuts and bolts can’t fit. With the right tool, hole prep, and mindful pull force, they deliver a secure thread that stands up to repeated assembly. 

Corrosion Protection and Specialised Variants 

Look for stainless steel or sealed variants if you need extra corrosion protection or leak prevention. Keep essential sizes in stock for ongoing tasks, and always view product specifications to confirm they’ll meet your load and material requirements.

A Versatile Solution for Multiple Industries

If you’re seeking an easy, efficient way to create a strong internal thread, Rivnut rivet nuts are a good investment. Whether for automotive, industrial, or hobby use, they simplify and strengthen your fastening processes across a range of thin materials. 

Reliable Anchors For Structural Integrity

We recommend these inserts for anyone who needs a reliable threaded anchor without compromising the surrounding structure.

Meet Dafra: Your Riveting Experts

Dafra has been Australia’s trusted source for rivets, Rivnuts, and fastening tools for over 40 years. Whether you’re a DIY enthusiast or an industry professional, we supply high-quality tools and fasteners to ensure your projects are a success. Our team is committed to providing expert advice and dependable solutions tailored to your needs, no matter the scope of your job.

Contact Details:

• Phone: 03 9555 6872

• Email: sales@dafra.com.au

• Address: 1/7 Jarrah Drive, Braeside, VIC 3195