Best Plastic Threaded Inserts in 2026

1/4-20 threaded insert x 15mm length, 6mm allen wrench included, best 1/4"-20 threaded insert wood insert furniture screw in nut connector screws.

Insert head ⌀: 0.461" / 11.7mm, body ⌀: 0.315" / 8mm, threads ⌀: 0.410" / 10.4mm.

Threaded inserts are easy to install, simply drill the right size hole and Install with hex key provided.

THREADED INSERTS FOR WOOD – E-Z LOK Thread Inserts for hard-wood are ideal for applications where stripping or thread erosion is possible. Perfect for furniture, cabinets, displays, and more.

PROPRIETARY KNIFE THREAD – E-Z Knife thread inserts provide superior holding power using a proprietary external “knife” thread to slice into the wood.

BRASS OR STEEL OPTIONS – Brass threaded inserts or stainless steel threaded inserts available. Stainless steel is recommended for particularly hard wood and anywhere corrosion resistance is needed.

1/4-20 threaded inserts for woodworking applications, 15mm length, hex drive Allen key included.

Threaded inserts are easy to install, simply drill the appropriately sized hole and Install the inserts with the hex key provided or other optional drive tools you have.

1/4-20 threaded inserts are the ideal solution for softwood, hardwood, plywood, MDF, and composition board.

Size: Insert head diameter: 0.445" (11.3mm), body diameter: 0.315"(8mm), threads diameter: 0.410"(10.4mm),1/4-20 threaded insert length: 0.591"(15mm); Allen Wrench: 1/4"(6mm).

Material: High quality carbon steel with high hardness, can keep a long-lasting hold.

Application: These furniture screws are suitable for wood furniture, hardwood or solid wood, such as furniture combinations(Threaded inserts are used to drill the right size hole and Install with hex key provided, and screw in nut connector screws).

Provides a Strong Machine Thread In Soft Woods

Ideal For Use in Pine, Plywood, Composition Board, and MDF

Designed For Use In Applications Such As Ready-To-Assemble Furniture, Drawer Pulls, Display Case, and Shipping Crates

THREADED INSERTS FOR WOOD – E-Z LOK Thread Inserts for hard-wood are ideal for applications where stripping or thread erosion is possible. Perfect for furniture, cabinets, displays, and more.

PROPRIETARY KNIFE THREAD – E-Z Knife thread inserts provide superior holding power using a proprietary external “knife” thread to slice into the wood.

BRASS OR STEEL OPTIONS – Brass threaded inserts or stainless steel threaded inserts available. Stainless steel is recommended for particularly hard wood and anywhere corrosion resistance is needed.

Provides a Strong Machine Thread In Soft Woods

Ideal For Use in Pine, Plywood, Composition Board, and MDF

Designed For Use In Applications Such As Ready-To-Assemble Furniture, Drawer Pulls, Display Case, and Shipping Crates

Good quality materials:Metric thread,made of high quality zinc alloy, hardness of high resistance to rust, wear and corrosion-resistant environmental protection and aesthetic characteristics

Package include: 12 sizes include M4*10, M5*10,M6*8, M6*10,M6*12, M6*15, M6*18, M6*20, M6*25,M8*15 M8*20, M10*25, total 265 pieces in a transparent box with can meet your different needs

Usage and install: pre-drill a proper hole, screw in with internal hex tool; Unique self-tapping designed external thread, contribute to tapping, with good tensile resistance, install with hex key, tapered external threads makes it not easy to pull out caused by vibration

Good Performance: these M3 brass nuts can be widely used in 3D printing injection molding to achieve tight fixation. Heat set Inserts can be installed by ultrasonic or heat into thread tapered hole, or molded in during injection. Just using tools such as a soldering iron or screws, you could easily set brass embedment screws into 3D printed holes.

Premium craftsmanship: the M3 brass nuts are manufactured with high-quality craftsmanship to ensure that all nuts have uniform and fixed standard round and twill thread knurl. The diameter of the front end of the nut is slightly smaller, so that you can easily align the nut in the reserved 3D printing hole. Compared with the ordinary straight-grain knurl, the twill thread knurlhas better pull-out and torque resistance, so that it will not shake and is easy to fix.

Durable material: all nuts are made of high-quality brass, which can prevent rust and oxidation, high temperature resistance, corrosion resistance, not easy to deform and have good thermal conductivity, which makes the nuts can be heated quickly and easily inserted so as to greatly shorten your work time.

THREADED INSERT INSTALL TOOL – E-Z LOK Threaded Insert Drive Tool speeds up the installation of threaded inserts without engaging internal threads.

SPEEDS UP INSTALLATION – Quickly insert threaded inserts for metal and knife thread inserts for hard wood with this optional threaded insert installation tool without time-consuming thread engagement.

FITS STANDARD POWER DRILLS – A standard shaft allows for the use of this threaded insert drill tool with standard power drills and drill presses.

【Various Sizes to choose from】This is a 170ps assortment kit which include M2*3*3—20PCS,M2*4*3.2—PCS,M2.5*3*3.5—20PCS,M2.5*6*4—20PCS,M3*3*4.2—20PCS,M3*4*4.5—20PCS,M3*5*4.5—20PCS,M3*5.7*4.6—30PCS,total 8 sizes of M2 and M3 to meet most of your needs.

【Designed for 3D printing parts and other plastic parts】 These inserts are widely used in 3D printing and other plastic parts such as PLA,PETG,ABS,PPS,PP etc., they can firmly secure two different parts together and make it look professional.

【Made of H62 Hard Brass】These heat set inserts are made of H62 High quality material, hard ,durable and corrosion-resisted at the same time ensures good thermal conductivity.

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.

1.☛[15 Assorted Sizes] --- This set contains 300 pieces select thread inserts in 15 different sizes(Thread Size x Height x Outer Dia.): M2x3x3.5,M2x4x3.5,M2x6x3.5,M2x8x3.5,M3x6x5,M3x8x5,M3x10x5,M4x6x6,M4x8x6,M4x10x6,M5x6x7,M5x8x7,M5x10x7,M6x10x7,M6x12x7. Comes with sturdy case for convenient storage.

2.☛[Quality Brass Material] --- With excellent conduction of heat, heat tolerance, rust and corrosion resistance, wear resistance. These brass threaded inserts for plastic are strong enough to provide easy insertion and long service life.

3.☛[Exquisite Workmanship] --- These brass inserts are made in strict accordance with standard. The nice, threaded thru hole are clean without burr, accurate, uniform, not easy to deform, offering secure and durable performance.

Size M2.5 insert,Total 70pcs The insert Overall Length=5.8mm,OD4.6mm

<b>Designed for 3D printing parts and other plastic parts<b> These inserts are widely used in 3D printing and other plastic parts such as PLA,PETG,ABS,PPS,PP etc., they can firmly secure two different parts together and make it look professional.

<b>Made of Quality Brass<b> These heat set inserts are made of High quality brass, hard ,durable and corrosion-resisted at the same time ensures good thermal conductivity.

√ Quantity: VIGRUE this nuts kit includes 340pcs of M2 M2.5 M3 M4 M5 M6 Thread Knurled Nuts, and it includes 12 various common sizes knurled nuts, sufficient for daily application.

√ Great Performance: Thanks to the outside oblique threads, it holds firmly in the pressure part and ensuring a high balanced tightening, once heated plastic around the brass sleeve nuts cools and hardens, the threaded nuts are firmly anchored

√ Organized Box: The nuts come in a portable clear box with corresponding sizes label. It is convenient for you to put away and store, which allow you to get the one you need quickly, improving your project efficiently.

【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.

【Sturdy & Wear-resistance】These threaded inserts have a good connection performance, can enhance connection strength and improve connection condition. Good wear-resistance, can be used for parts that requires frequent removing,It is widely used in automobile industry, rail car industry, ship industry, household appliances and many other places.

【You Can Get】Silver, total 50Pcs. 10 x M3*0.5-M5*0.5 L6, 10 x M4*0.7-M6.5*0.75 L8, 10 x M5*0.8-M8*1.0 L10, 5 x M6*1.0-M10*1.5 L14, 5 x M8*1.25-M12*1.5 L15, 5 x M10*1.5-M14*1.5 L18, 5 x M12*1.75-M16*1.5 L22. 1 x Storage Case with different compartments for easy storage.

1.HIGH QUALITY: These self -tapping thread inserts all made of high quality stainless steel, it is of high hardness and low abrasion.

2.FEATURE: These threaded inserts has the ability of strong vibration resistance, it is resistant to vibration to avoid loosening. Greatly improve strength and stability of screws connection.

3.GOOD CHARACTER: Solid, is not easy to slick, deep thread, uniform force, no burr in thread, clear and tidy. A damaged screw hole can be used as normal after installed a thread insert

Package Content: You will get 100pcs 3D printing brass nuts, super large quantity can meet your needs of connecting numerous 3D printing accessories. Each knurled brass nut measures about M3x4x5mm / M3x0.16x0.2inch, please ensure that the size of the nuts can well match your 3D printer.

Premium Material: The threaded inserts for 3D printing are made of high quality brass, extremely sturdy, not easy to break or deform, also can withstand high temperature above 300°C / 572°F. Excellent thermal conductivity also makes your 3D printer to work more effectively.

Easy to Install: The knurled brass nuts can be easily installed into the the tapered holes of 3D printers by heating, also can be molded by injection molding. The 3D printing brass nuts with full knurled patterns can perfectly match with your 3D printers. Practical nuts make your 3D printer work well.

【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.

T-NUTS ARE A PRESS-IN TYPE OF THREADED INSERT - EASLY INSTALLED WITH A HAMMER.

USED WITH SOFT MATERIALS SUCH AS WOOD OR PLASTIC.

HAS SHARP PRONGS UNDER THE FLANGE THAT DIG INTO THE MATERIAL LIKE A NAIL.

SUITABLE: The self-tapping thread insert is a kind of fastener that strengthens the thread, which can form a high-strength inner thread hole when embedded in a soft material such as plastic, copper. It can also be used to repair the damaged inner thread.

MATERIAL: Made of high quality stainless steel, it is of high hardness and low abrasion,Greatly improve strength and stability of screws connection

ADVANTAGE: With certain elasticity and even load, it is resistant to vibration to avoid loosening,Long service life - it can be used repeatedly.

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.

M2 + M3 + M4 + M5 THREAD INSERTS FOR YOUR 3D PRINTED PARTS: The ruthex threaded nuts can be retrofitted by heat or ultrasound into parts of 3D printers from e.g. Anycubic, Creality or Prusa. With the help of heat from a soldering iron or ultrasound, the insert nuts are simply embedded in a blind or through hole

FIRM HOLDING WITH EASY APPLICATION: Thanks to the geometry of the threaded sleeve, it holds firmly in the pressure part. The opposing spiral-shaped knurled nuts ensure a high balanced tightening and loosening torque, as well as a high tightening force. Through the guide, insertion has been greatly simplified

STABLE & LONG-LASTING THREAD INSERTS: The inserts with internal thread brass, which ensures optimum corrosion resistance and thermal conductivity. This means that each insert nut can be used for a long time and is easy to use. The reusability of the insert nut is also possible by carefully removing them from the pressure part when they are no longer needed