Daisy
Last Updated: Feb 6, 2026
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| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Vinient | 9.88 | ✅ | ✅ | ✅ |
40Pcs of Stainless Steel 1/4”-20 Rivet Nuts Threaded Insert. Flat head with knurled round body. Strong and corrosion resistant.
Thread pitch: 1/4”-20 (1/4” is the inner thread diameter. 20 means there are 20 threads in per inch).
Grip Range:0.5-3mm/0.019”-0.118”; Body Diameter: 8.9mm / 0.350".
Rivet Nuts Total Length: 15.5mm / 0.610"; Application Hole Size: 0.351"-0.356". More detail 1/4-20UNC size specification can be refer to the second image detail sheet.
Applications- 304 stainless steel rivnuts, anti-rusted and strength enough to apply in many different material types including steel, sheet metal, aluminum, plastic and fiberglass etc,. Perfect for furniture, decoration,automotive and other electrical & industrial applications.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| IndustrialSupplies | 9.47 | ❌ | ❌ | ❌ |
THREADED INSERTS FOR METAL – E-Z LOK Thread Inserts for metal. Solid threaded inserts that are strong, easy to install, and self-locking. For optimal holding power in metal.
INSTALL WITH STANDARD TOOLS – 303 stainless steel threaded inserts machined out of solid steel for strength. Install with standard tools. No special drills, taps, or special installation tools are needed.
QUICKLY REPAIR DAMAGED THREADS – Quickly repair damaged threads or reinforce tapped holes in soft metals with these steel thread inserts.
FOR USE WITH APPLICATIONS – The threaded inserts are designed for use with soft metals: aluminum, cast iron, magnesium, etc.
STRONG THREADS MADE EASY – Simply drill the hole with a standard drill. Tap the hole with a standard tap. Turn in the insert with a screwdriver, bolt/jam nut, or an E-Z LOK drive tool.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
THREADED INSERTS FOR METAL – E-Z LOK Thread Inserts for metal. Solid threaded inserts that are strong, easy to install, and self-locking. For optimal holding power in metal.
INSTALL WITH STANDARD TOOLS – 303 stainless steel threaded inserts machined out of solid steel for strength. Install with standard tools. No special drills, taps, or special installation tools are needed.
QUICKLY REPAIR DAMAGED THREADS – Quickly repair damaged threads or reinforce tapped holes in soft metals with these steel thread inserts.
FOR USE WITH APPLICATIONS – The threaded inserts are designed for use with soft metals: aluminum, cast iron, magnesium, etc.
STRONG THREADS MADE EASY – Simply drill the hole with a standard drill. Tap the hole with a standard tap. Turn in the insert with a screwdriver, bolt/jam nut, or an E-Z LOK drive tool.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| tanus | 9.70 | ✅ | ✅ | ✅ |
EASY TO INSTALL: These self-tapping thread inserts has self-tapping ability, does not need to be pre-tapped, can be directly used by the installation tool to screw it into a specific hole.
SAFE: Threaded Insert has the ability of strong vibration resistance, which can prevent loose.Can be used in many different places.
HELP TO MAINTENANCE: A damaged screw hole can be used as normal after installed a thread insert.
SIZE: Inner Thread Size: M8(diameter) x 1.25(pitch), Outer Thread Size: M12(diameter) x 1.5(pitch), Length: 15mm, Drilling Diameter: 10.6~10.8mm(plastic); 11~11.2mm(aluminum alloy); 11.2~11.4mm(cast iron), Min. Drilling Depth: 18mm.
WIDELY APPLICATION: It is widely used in automobile industry, rail car industry, ship industry, household appliances and many other places.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Wokape | 9.68 | ✅ | ✅ | ✅ |
1,Packaging includes ------- In this kit, You will get You want Female Thread Knurled Nuts in sufficient quantity for your use, Easy to install: From the moment that the insert has a valve conduit, there is no need to back-drill and counter-sink the hole.
2, Various Sizes ------- In this kit, We have prepared M2 M3 M4 M5 M6 Female Thread Knurled Nuts for You, different sizes and quantity can meet your different meets. You can Free choose the products you need according to your needs. Special thread design make it easier to operate.
3, Widely used ------- Threaded insert nuts are widely used in injection molding, for fastening, can be installed in the cone hole by ultrasonic or heat, or in the injection process. Since the insert has a conduction valve, there is no need to back-drill and counter-sink the hole.
4, High Quality Material ------- These Female thread knurled nuts are made of durable brass with excellent rust resistance and oxidation resistance to ensure long-term use. Rust-proof, anti-corrosive, non-toxic, acid-resistant, and does not release harmful substances.
5, Why You Choose Us ------- These Brass Threaded Insert Embedment Nuts can be installed into the tapered holes of the threads by ultrasound or heat, or moulded during injection. The material of the nuts is brass, which can resist heat. Hardness and toughness are more than 10 times higher than aluminum, high processing difficulty, complicated production process.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
THREADED INSERTS FOR METAL – E-Z LOK Thread Inserts for metal. Solid threaded inserts that are strong, easy to install, and self-locking. For optimal holding power in metal.
INSTALL WITH STANDARD TOOLS – 12L14 Carbon steel threaded inserts. Install with standard tools. No special drills, taps, or special installation tools are needed.
QUICKLY REPAIR DAMAGED THREADS – Quickly repair damaged threads or reinforce tapped holes in soft metals with these steel thread inserts.
FOR USE WITH APPLICATIONS – The threaded inserts are designed for use with soft metals: aluminum, cast iron, magnesium, etc.
STRONG THREADS MADE EASY – Simply drill the hole with a standard drill. Tap the hole with a standard tap. Turn in the insert with a screwdriver, bolt/jam nut, or an E-Z LOK drive tool.
IMPORTANT NOTE: Installation requires the use of a Letter X drill.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| IndustrialSupplies | 9.47 | ❌ | ❌ | ❌ |
THREADED INSERTS FOR METAL – E-Z LOK Thread Inserts for metal. Solid threaded inserts that are strong, easy to install, and self-locking. For optimal holding power in metal.
INSTALL WITH STANDARD TOOLS – 12L14 Carbon steel threaded inserts. Install with standard tools. No special drills, taps, or special installation tools are needed.
QUICKLY REPAIR DAMAGED THREADS – Quickly repair damaged threads or reinforce tapped holes in soft metals with these steel thread inserts.
FOR USE WITH APPLICATIONS – The threaded inserts are designed for use with soft metals: aluminum, cast iron, magnesium, etc.
STRONG THREADS MADE EASY – Simply drill the hole with a standard drill. Tap the hole with a standard tap. Turn in the insert with a screwdriver, bolt/jam nut, or an E-Z LOK drive tool.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
THREADED INSERTS FOR METAL – E-Z LOK Thread Inserts for metal. Solid threaded inserts that are strong, easy to install, and self-locking. For optimal holding power in metal.
INSTALL WITH STANDARD TOOLS – 12L14 Carbon steel threaded inserts. Install with standard tools. No special drills, taps, or special installation tools are needed.
QUICKLY REPAIR DAMAGED THREADS – Quickly repair damaged threads or reinforce tapped holes in soft metals with these steel thread inserts.
FOR USE WITH APPLICATIONS – The threaded inserts are designed for use with soft metals: aluminum, cast iron, magnesium, etc.
STRONG THREADS MADE EASY – Simply drill the hole with a standard drill. Tap the hole with a standard tap. Turn in the insert with a screwdriver, bolt/jam nut, or an E-Z LOK drive tool.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
THREADED INSERTS FOR METAL – E-Z LOK Thin Wall Thread Inserts for metal. Solid threaded inserts that are strong, easy to install, and self-locking. For optimal holding power in metal.
INSTALL WITH STANDARD TOOLS – 303 stainless steel threaded inserts machined out of solid steel for strength. Install with standard tools. No special drills, taps, or special installation tools are needed.
QUICKLY REPAIR DAMAGED THREADS – Quickly repair damaged threads or reinforce tapped holes in soft metals with these steel thread inserts. The Thin Wall feature reduces the hole size.
FOR USE WITH APPLICATIONS – The threaded inserts are designed for use with soft metals: aluminum, cast iron, magnesium, etc.
STRONG THREADS MADE EASY – Simply drill the hole with a standard drill. Tap the hole with a standard tap. Turn in the insert with a screwdriver, bolt/jam nut, or an E-Z LOK drive tool.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Small Town Premium Supplements | 9.82 | ✅ | ✅ | ✅ |
THREADED INSERTS FOR METAL – E-Z LOK Thread Inserts for metal. Solid threaded inserts that are strong, easy to install, and self-locking. For optimal holding power in metal.
INSTALL WITH STANDARD TOOLS – 12L14 Carbon steel threaded inserts. Install with standard tools. No special drills, taps, or special installation tools are needed.
QUICKLY REPAIR DAMAGED THREADS – Quickly repair damaged threads or reinforce tapped holes in soft metals with these steel thread inserts.
FOR USE WITH APPLICATIONS – The threaded inserts are designed for use with soft metals: aluminum, cast iron, magnesium, etc.
STRONG THREADS MADE EASY – Simply drill the hole with a standard drill. Tap the hole with a standard tap. Turn in the insert with a screwdriver, bolt/jam nut, or an E-Z LOK drive tool.
IMPORTANT NOTE: Installation requires the use of a 37/64 drill.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| IndustrialSupplies | 9.47 | ❌ | ❌ | ❌ |
THREADED INSERTS FOR METAL – E-Z LOK Thread Inserts for metal. Solid threaded inserts that are strong, easy to install, and self-locking. For optimal holding power in metal.
INSTALL WITH STANDARD TOOLS – C12L14 Carbon steel threaded inserts. Install with standard tools. No special drills, taps, or special installation tools are needed.
QUICKLY REPAIR DAMAGED THREADS – Quickly repair damaged threads or reinforce tapped holes in soft metals with these steel thread inserts.
FOR USE WITH APPLICATIONS – The threaded inserts are designed for use with soft metals: aluminum, cast iron, magnesium, etc.
STRONG THREADS MADE EASY – Simply drill the hole with a standard drill. Tap the hole with a standard tap. Turn in the insert with a screwdriver, bolt/jam nut, or an E-Z LOK drive tool.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
THREADED INSERTS FOR METAL – E-Z LOK Thread Inserts for metal. Solid threaded inserts that are strong, easy to install, and self-locking. For optimal holding power in metal.
INSTALL WITH STANDARD TOOLS – 12L14 Carbon steel threaded inserts. Install with standard tools. No special drills, taps, or special installation tools are needed.
QUICKLY REPAIR DAMAGED THREADS – Quickly repair damaged threads or reinforce tapped holes in soft metals with these steel thread inserts.
FOR USE WITH APPLICATIONS – The threaded inserts are designed for use with soft metals: aluminum, cast iron, magnesium, etc.
STRONG THREADS MADE EASY – Simply drill the hole with a standard drill. Tap the hole with a standard tap. Turn in the insert with a screwdriver, bolt/jam nut, or an E-Z LOK drive tool.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| eboxer | 9.60 | ✅ | ✅ | ✅ |
【Easy To Use】 The self tapping screw sleeve does not need to be tapped in advance, and can be directly screwed into the specific hole reserved for the base material. For the female thread of the broken tooth, the same screw as the original can be used, which is economical and beautiful, and can be added to new products.
【Easy To Maintenance】 Easy to maintenance, install a thread insert into a damage screw hole, then the screw hole can be used as normal, in order to avoid workpiece loss.
【Excellent Performance】 The self tapping screw sleeve can solve the problem of thread crushing and effectively improve the bonding strength with the base metal. The contact area is large and can withstand strong tension. Besides, they are used in low strength materials such as aluminum, can avoid thread damage and get a good connection performance, to enhance connection strength and improve connection condition.
【Improve The Life Of Parts】 Used for parts that requires frequent removing, it can greatly improve service life and wear resistance of screw thread.
【Prevent Screw From Getting Loose】 It can prevent screw from getting loose,especially used for products requiring high coefficient of insurance.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
THREADED INSERTS FOR METAL – E-Z LOK Thread Inserts for metal. Solid threaded inserts that are strong, easy to install, and self-locking. For optimal holding power in metal.
INSTALL WITH STANDARD TOOLS – 12L14 Carbon steel threaded inserts. Install with standard tools. No special drills, taps, or special installation tools are needed.
QUICKLY REPAIR DAMAGED THREADS – Quickly repair damaged threads or reinforce tapped holes in soft metals with these steel thread inserts.
FOR USE WITH APPLICATIONS – The threaded inserts are designed for use with soft metals: aluminum, cast iron, magnesium, etc.
STRONG THREADS MADE EASY – Simply drill the hole with a standard drill. Tap the hole with a standard tap. Turn in the insert with a screwdriver, bolt/jam nut, or an E-Z LOK drive tool.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
THREADED INSERTS FOR METAL – E-Z LOK Thread Inserts for metal. Solid threaded inserts that are strong, easy to install, and self-locking. For optimal holding power in metal.
INSTALL WITH STANDARD TOOLS – 12L14 Carbon steel threaded inserts. Install with standard tools. No special drills, taps, or special installation tools are needed.
QUICKLY REPAIR DAMAGED THREADS – Quickly repair damaged threads or reinforce tapped holes in soft metals with these steel thread inserts.
FOR USE WITH APPLICATIONS – The threaded inserts are designed for use with soft metals: aluminum, cast iron, magnesium, etc.
STRONG THREADS MADE EASY – Simply drill the hole with a standard drill. Tap the hole with a standard tap. Turn in the insert with a screwdriver, bolt/jam nut, or an E-Z LOK drive tool.
IMPORTANT NOTE: Installation requires the use of a Letter I drill.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
THREADED INSERTS FOR METAL – E-Z LOK Thread Inserts for metal. Solid threaded inserts that are strong, easy to install, and self-locking. For optimal holding power in metal.
INSTALL WITH STANDARD TOOLS – 12L14 Carbon steel threaded inserts. Install with standard tools. No special drills, taps, or special installation tools are needed.
QUICKLY REPAIR DAMAGED THREADS – Quickly repair damaged threads or reinforce tapped holes in soft metals with these steel thread inserts.
FOR USE WITH APPLICATIONS – The threaded inserts are designed for use with soft metals: aluminum, cast iron, magnesium, etc.
STRONG THREADS MADE EASY – Simply drill the hole with a standard drill. Tap the hole with a standard tap. Turn in the insert with a screwdriver, bolt/jam nut, or an E-Z LOK drive tool.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| FNATR | 4.92 | ✅ | ✅ | ✅ |
【Handy Tool to Install Inserts】 This heat press is a handy tool to install inserts into 3D printed parts. The iron tip heats up the brass tip and softens plastic, allowing you to install inserts into the part. Once it cools down, the nuts are fixed in place.
【Adjustable Metal Bar】 The horizontal aluminum extrusion profile is adjustable so that you can adjust the position of the soldering iron without moving it in operation, which is safer.
【Metal Handle】 The handle on the soldering iron will make it easier to press down the insert nuts into the part, especially when you need to do it repeatedly.
【Adjustable Thumb Nut】 The two adjustable thumb nuts on top and bottom respectively helps you adjust the moving range of the iron.
【Anti-slip Silicone Pad】 In case the part slips when you press down the iron, the heat press has an anti-slip silicone pad that you can place onto the base to give the part more grip on it.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| ❌ | ❌ | ❌ |
THREADED INSERTS FOR METAL – E-Z LOK Thread Inserts for metal. Solid threaded inserts that are strong, easy to install, and self-locking. For optimal holding power in metal.
INSTALL WITH STANDARD TOOLS – 12L14 Carbon steel threaded inserts. Install with standard tools. No special drills, taps, or special installation tools are needed.
QUICKLY REPAIR DAMAGED THREADS – Quickly repair damaged threads or reinforce tapped holes in soft metals with these steel thread inserts.
FOR USE WITH APPLICATIONS – The threaded inserts are designed for use with soft metals: aluminum, cast iron, magnesium, etc.
STRONG THREADS MADE EASY – Simply drill the hole with a standard drill. Tap the hole with a standard tap. Turn in the insert with a screwdriver, bolt/jam nut, or an E-Z LOK drive tool.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Naroote | 4.34 | ❌ | ❌ | ❌ |
Steel thread inserts used in low strength materials such as aluminum, , can avoid thread damage and get a good connection performance, to enhance connection strength and improve connection condition.
Easy to maintenance, install a thread insert into a damage screw hole, then the screw hole can be used as normal, in order to avoid workpiece loss.
Used for parts that requires frequent removing, it can greatly improve service life and wear-resistance of screw thread.
It can prevent screw from getting loose,especially used for products requiring high coefficient of insurance.
Because of a certain elasticity, thread insert can even the load distribution on each thread, eliminate pitch and tooth deviation between screw and screw hole, and absorb vibration, thus increasing the screw thread connection strength and fatigue resista
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amazon.com | 9.68 | ✅ | ✅ | ✅ |
THREADED INSERTS FOR METAL – E-Z LOK Thread Inserts for metal. Solid threaded inserts that are strong, easy to install, and self-locking. For optimal holding power in metal.
INSTALL WITH STANDARD TOOLS – 316 stainless steel threaded inserts machined out of solid steel for strength. Install with standard tools. No special drills, taps, or special installation tools are needed.
QUICKLY REPAIR DAMAGED THREADS – Quickly repair damaged threads or reinforce tapped holes in soft metals with these steel thread inserts.
FOR USE WITH APPLICATIONS – The threaded inserts are designed for use with soft metals: aluminum, cast iron, magnesium, etc.
STRONG THREADS MADE EASY – Simply drill the hole with a standard drill. Tap the hole with a standard tap. Turn in the insert with a screwdriver, bolt/jam nut, or an E-Z LOK drive tool.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amadeo City | 9.87 | ✅ | ✅ | ✅ |
Product Name: Threaded Inserts; Finish: Nickel Plated; Color: Silver Tone; Inner Thread Size: M6 x 1((Dia.x Pitch); Outer Thread Size: M10 x 1.5(Dia.x Pitch); Length: 14mm / 0.55"
Min. Drilling Size: 3 x 5.5mm / 0.12"x0.22"(wide*depth); Reference Drilling Diameter: 12.6-12.8mm(Plastic), 13-13.3mm(Aluminum Alloy), 13.2-13.4mm(Cast Iron)
Material: Carbon steel material, suitable for aluminum alloy, copper alloy, plastic and other substrates with low engineering strength. Strong resistance to vibration, can prevent loosening.
Advantages: With self-tapping capability, the base material does not need to be tapped in advance. It has a repairing effect on the female thread of the broken tooth, can continue to use the same screws by using the self-tapping screw sleeve.
Application: Installation easily, and only one assembly tool is required. It is widely used in household appliances, the shipping industry, construction machinery, electronic products, modular furniture and other places.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Amadeo City | 9.87 | ✅ | ✅ | ✅ |
Product Name: Threaded Inserts; Finish: Zinc Plating; Color: Gold Tone; Inner Thread Size: M3 x 0.5((Dia.x Pitch); Outer Thread Size: M5 x 0.5(Dia.x Pitch); Length: 6mm / 0.24"
Min. Drilling Size: 1 x 2.5mm / 0.04"x0.1"(wide*depth); Reference Drilling Diameter: 4.5-4.6mm(Plastic), 4.6-4.7mm(Aluminum Alloy), 4.7-4.8mm(Cast Iron)
Material: 45# Carbon steel material, suitable for aluminum alloy, copper alloy, plastic and other substrates with low engineering strength. Strong resistance to vibration, can prevent loosening.
Advantages: With self-tapping capability, the base material does not need to be tapped in advance. It has a repairing effect on the female thread of the broken tooth, can continue to use the same screws by using the self-tapping screw sleeve.
Application: Installation easily, and only one assembly tool is required. It is widely used in household appliances, the shipping industry, construction machinery, electronic products, modular furniture and other places.
Here is the list of top-rated brands that were evaluated by PM.
| Brand | Count |
|---|---|
| E-Z Lok | 14 |
| Uxcell | 2 |
| Anwenk | 1 |
| Ashata | 1 |
| Fnatr | 1 |
| Hilitand | 1 |
| Naroote | 1 |
| Wokape | 1 |
We've carried out a comprehensive analysis of 812 reviews on nut inserts, using our selection criteria to identify the best options in the fasteners. Our findings reveal that most customers typically select nut inserts priced around $14.00, with top brands including lokman, trivd frol, sprite science, eilxmag, e-z lok, reegoo and hilitchi and pgmj
Our team of expert editors reviewed these high-quality items and handpicked the top 22 nut inserts for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the fasteners category. These include lok man, trivdpro, up2u, eilxmag, amazon.com, reegoo us and hilitchi and pgmj .
We are dedicated to assisting our users in finding the right inserts Products based on their needs, saving them considerable time when choosing which nut inserts to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.