Best Plastic Threaded Inserts in 2026

40pieces Pack of Furniture Screws Threaded Inserts for Wood Furniture.

Size: Internal Thread Insert Type: 1/4"-20, External Diameter: 10.5mm, Total Length: 15mm. (1/4"-20x15mm)

Material: High quality carbon steel with high hardness. These furniture screws are wear-resistant and very durable to use. Standard internal hex socket type without burr and non-slip design.

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.

This kit contains 40-Piece of 1/4-20 Threaded Inserts - 3/5" Length, 20 Piece of 1/4-20 tee nuts - 2/5" length, 30-Piece of 1/4-20 Bolts - 1" length, 10-Piece of 1/4-20 Bolts 1-1/4" length, 40-Piece of 1/4-20 washers.

1/4-20 threaded inserts and t nuts are made of Carbon Steel ,zinc plated. 1/4-20 bolts and washers are made of stainless steel, they feature corrosion-resistance and rust-resistance.

Drilling Size for threaded inserts: ~soft wood - 23/64", if small, use 3/8", ~ hard wood - 3/8", if small, use 25/64".

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).

QUICKLY REPAIR DAMAGED THREADS – Quickly repair damaged threads or reinforce tapped holes in metals with this thread repair tool kit.

THIN WALL CARBON STEEL INSERTS – Kit includes thin wall carbon steel threaded inserts that are ideal for applications where the hole size is an issue.

FOR USE WITH APPLICATIONS – The metal threaded inserts are designed for use with soft metals: aluminum, cast iron, magnesium, etc.

Easy to Use Solution For Repairing Damaged Threads in Metal

Install With Standard Drill & Tap; NO Special Tools Needed

Self Locking; Preapplied Adhesive Activates Upon Installation and is Fastener-Ready in 3-5 Minutes

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".

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.

QUICKLY REPAIR DAMAGED THREADS – Quickly repair damaged threads or reinforce tapped holes in soft metals with this helical thread repair kit.

18-8 STAINLESS STEEL WIRE – Kit includes 18-8 stainless steel threaded inserts that are resistant to corrosion and can withstand temperatures to 800°F.

FOR USE WITH APPLICATIONS – The metal threaded inserts are designed for use with soft metals: aluminum, cast iron, magnesium, etc.

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.

Rich Size Options - This Threaded Inserts Assortment Kit is available in a wide range of sizes, including 1/4-20*10mm, 1/4-20*15mm, 1/4-20*20mm, and 1/4-20*25mm. All sizes are neatly organized in a clear organizer box, allowing you to quickly locate the one you need.

Superior Quality for Outstanding performance - This Nut Inserts Assortment Set is constructed entirely of new, high-grade carbon steel with exceptional hardness and many layers of zinc coating for enhanced rust resistance, providing a longer service life and a more dependable installation.

Clearly assorted for easy access - The Threaded Inserts Assortment set comes in a well-built transparent storage box, which allows you to place all sizes of Threaded Inserts in a well organized war and so that you can get what you need at a glance, saving you a lot of time rummaging through drawers finding a match for your project.

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.

Easy to Use Solution For Repairing Damaged Threads in Metal

product type :MECHANICAL FASTENERS

Package Dimensions: 22.86 L x 3.302 H x 12.953 W (cm)

【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

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.

【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.

★ If you want to learn more about the size corresponding to each specification, you can check our size chart.

★ Size description: M6x8: thread inner diameter (d) 6mm, cylinder length (L) 8mm.

★ The cylinder nuts are made of 304 stainless steel , which have good corrosion resistant, strong and durable. The thread is neat and clear, the force is even, and it is not easy to slip.

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.