Nut Inserts Technical Datasheets

This technical datasheet library covers various types of nut inserts including round , semi hex an full hex body in large and reduced flange and open and closed end. Browse the individual datasheets below to access detailed engineering information, drawings, technical specifications, and downloadable product documentation.

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About Nut Inserts

Nut inserts, commonly known as Rivet Nuts, Blind Rivet Nuts, or Threaded Inserts, provide strong reusable internal threads in thin sheets, hollow sections, tubes, and other materials where conventional tapping is not practical.

Installed from one side of the workpiece, nut inserts eliminate the need for access to the rear of the assembly while providing reliable load-bearing threads for repeated assembly and maintenance.

They are widely used across sheet metal fabrication, electrical enclosures, automotive components, railways, HVAC equipment, furniture, agricultural machinery, electronics, and general manufacturing.

Why Use Nut Inserts?

Unlike tapped holes, nut inserts provide durable machine threads in thin materials without welding or backside access.

Benefits include:

Available in corrosion-resistant materials
Strong permanent internal threads
Installation from one side only
Suitable for thin sheet materials
Allows repeated assembly and disassembly
No distortion caused by welding
Suitable for painted or coated parts
Fast installation

Materials Available

Material	Advantages	Typical Applications
Steel Zinc Plated	High strength and economical	General engineering
Stainless Steel 304	Excellent corrosion resistance	Food processing, electronics
Stainless Steel 316	Superior marine corrosion resistance	Offshore, marine
Aluminium	Lightweight	Automotive, aerospace, electronics

Installation Do’s and Don’ts

✅ Do

• Select the correct nut insert type (Round Body, Hex Body, Half-Hex, Closed-End, etc.) for your application.
• Drill the hole to the recommended diameter with the specified tolerance.
• Deburr and clean the hole before installation.
• Use a calibrated rivet nut installation tool with the correct mandrel and nosepiece.
• Install the insert perpendicular (90°) to the sheet surface.
• Ensure the material thickness falls within the specified grip range.
• Verify the insert is fully collapsed and seated flush against the parent material.
• Use the recommended tightening torque for the mating screw.
• Inspect installed inserts periodically in high-vibration applications.

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❌ Don’t

• Don’t use oversized or irregular holes.
• Don’t install inserts into sheet material thinner than the specified grip range.
• Don’t over-compress the insert during installation.
• Don’t reuse damaged or partially installed inserts.
• Don’t overtighten screws beyond the recommended torque.
• Don’t use round-body inserts where high anti-rotation performance is required if a hex-body insert is available.
• Don’t ignore corrosion compatibility between the insert and the parent material.
• Don’t install inserts too close to the sheet edge unless permitted by the manufacturer’s recommendations.

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Common Problems & Troubleshooting

Problem	Possible Cause	Recommended Solution
Nut insert spins when tightening screw	Hole diameter too large or insert not fully collapsed	Verify hole size and install using the correct setting force. Consider a hex-body insert if higher torque resistance is needed.
Insert pulls out of the sheet	Incorrect grip range or sheet material too thin	Select an insert suitable for the material thickness and verify pull-out requirements.
Insert sits proud of the surface	Incomplete installation stroke or burrs around the hole	Remove burrs and ensure the installation tool completes the full stroke.
Thread strips during assembly	Excessive tightening torque or incorrect screw	Use the specified tightening torque and the correct screw grade.
Parent material cracks	Hole too close to the edge or excessive installation force	Increase edge distance and use the correct installation force.
Screw will not thread smoothly	Damaged internal thread or contamination	Inspect threads and replace damaged inserts if necessary.
Insert rotates after repeated service	Joint subjected to vibration beyond insert capability	Consider hex-body, splined, or structural inserts, or add thread-locking where appropriate.
Corrosion around insert	Dissimilar metals or unsuitable plating	Select compatible materials or corrosion-resistant finishes appropriate for the environment.

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Which Nut Insert Should You Choose?

Requirement	Recommended Nut Insert
General sheet metal	Round Body Open-End
High torque resistance	Hex Body
Waterproof / sealed assemblies	Closed-End
Thin sheet materials	Thin Sheet Nut Insert
Stainless steel applications	Stainless Steel Nut Insert
Aluminium structures	Aluminium Nut Insert
High vibration	Hex Body
Decorative or flush finish	Countersunk Head Nut Insert
Soft materials	Large Flange Nut Insert

Before You Select a Nut Insert

✔ Material thickness

✔ Parent material (Steel, Stainless Steel, Aluminium, Plastic)

✔ Hole diameter

✔ Required thread size

✔ Required pull-out strength

✔ Required torque-out resistance

✔ Open-End or Closed-End

✔ Round Body or Hex Body

✔ Installation method (Hand Tool, Pneumatic, Hydraulic)

✔ Corrosion environment

Frequently Asked Questions

Related Resources

• Blind Rivets Explained: Types, Strength Ratings and Selection Guide
• How to Select the Right Blind Rivet Type
• Blind Rivets