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Insert(Length L (after insertion) (D = Thread Dia. M):3D)

These products are used for reinforcing female threads. These can be used with damaged female threads or soft materials to enable screws/bolts to be tightened.
In general, coil inserts that have been machined into a coil shape are very common, but we also have a wide lineup that includes "self-tapping inserts", "inserts for resin", "insert nuts", "locking inserts", etc., enabling use to suit various environments or materials.
MISUMI enables spec searches and ordering quantities from just 1 piece. Tools are also sold in addition to the inserts themselves.
[Materials]
Iron, stainless steel, brass, phosphor bronze, Inconel, nitronics
[Size]
M1.4 to M39 are available as well as imperial sizes
[Search Keywords]
Heli-Sert, E-Sert, Sprue, Female Thread

Search by specifying the lower class category

Days to Ship
  • All
  • Same day
  • 3 Day(s) or Less
  • 4 Day(s) or Less
  • 5 Day(s) or Less
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  • 9 Day(s) or Less
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  • 11 Day(s) or Less
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Brand
Product Series
CAD
Days to Ship
Screw Dia. M (after insertion)(mm)
Type
Material
Screw Type
Length L (after insertion) (D = Thread Dia. M)
Application
Notch
Thread Dia. (After inserted), Unified(inch)
Shape
Sales Unit
  • On Sale Till 31/03/2025

Dodge Bit Insert (Standard) SB Brass (Cadmium-Free)

  • On Sale Till 31/03/2025

Thread Inserts

    Recoil-Free (mm) SUS304

    • On Sale Till 31/03/2025

    Dodge Bit Insert Flange Type  (Brass Cadmium-Free)

      Stainless Steel Insert Nut, Screw-in (Slotted)/IRU-S

        DODGE BET Insert (Standard), Double Sided Chamfer Type, Brass (Cadmium-Free)

          Dodge Bit Insert Standard SD (Brass Cadmium-Less)

            Brass Bit Insert (Flange Type) / HFB

              Stainless Steel/Insert Nut Threaded Type / IRU

                Brass Bit Insert (Standard Model / Single-Sided Type) HSB

                  Stainless Steel/Aluminum Insert Nut Threaded Type (Loosening Prevention) / IRU-W

                    Brass Bit Insert (Standard, Double-sided) HSB-Z

                      E-Certs

                        Sprue (Unified) (UNC)

                          Stainless Steel Insert Nut, Screw-in (Thread Locker / Slotted) / IRU-SW

                            Brass Insert Nut (Screw-In Type / Slotted) IRB-S/IRB-SC

                              Brass Dutch Insert (Standard) / HSD

                                Sprue

                                  Tangless Insert (SUS304)

                                    Brass Insert Nut (Screw-In Type) IRB/IRB-C

                                      Sprue (Unify) (UNF)

                                        Lock Sprue

                                          E-Sert Fine

                                            Stainless Steel Recoil

                                              Stainless Steel E-Sert Hemlock-Made

                                                Stainless Steel E-Sert (Unify) (UNC)

                                                  Lock Type Sprew

                                                    Brass Insert Nut (Screw-In Type) IRB-W/-CW

                                                      Aluminum Insert Nut (Screw-In Type) IRL-B/IRL-K

                                                        Aluminum Insert Nut (Screw-In Type / Coated With Loosening Prevention Agent) IRL-BW/-KW

                                                          Brass Insert Nut (Screw-In Type / Slotted) IRB-SW/-SCW

                                                            Nylon Nut Insert / NNI

                                                            Brand

                                                            TOKAI METAL INDUSTRY

                                                            MISUMI

                                                            RECOIL

                                                            TOKAI METAL INDUSTRY

                                                            HIROSUGI-KEIKI

                                                            TOKAI METAL INDUSTRY

                                                            TOKAI METAL INDUSTRY

                                                            HIROSUGI-KEIKI

                                                            HIROSUGI-KEIKI

                                                            HIROSUGI-KEIKI

                                                            HIROSUGI-KEIKI

                                                            HIROSUGI-KEIKI

                                                            TSUGAMI

                                                            NIPPON SPREW

                                                            HIROSUGI-KEIKI

                                                            HIROSUGI-KEIKI

                                                            HIROSUGI-KEIKI

                                                            NIPPON SPREW

                                                            RECOIL

                                                            HIROSUGI-KEIKI

                                                            NIPPON SPREW

                                                            NIPPON SPREW

                                                            TSUGAMI

                                                            SUNCO

                                                            SUNCO

                                                            SUNCO

                                                            SUNCO

                                                            HIROSUGI-KEIKI

                                                            HIROSUGI-KEIKI

                                                            HIROSUGI-KEIKI

                                                            HIROSUGI-KEIKI

                                                            HIROSUGI-KEIKI

                                                            Product Series

                                                            Dodge Bit Insert (Standard) SB Brass (Cadmium-Free)【1-4,000 Pieces Per Package】

                                                            Thread Inserts

                                                            Recoil-Free (mm) SUS304

                                                            Dodge Bit Insert Flange Type (Brass Cadmium-Free)

                                                            Stainless Steel Insert Nut, Screw-in (Slotted)/IRU-S

                                                            DODGE BET Insert (Standard), Double Sided Chamfer Type, Brass (Cadmium-Free)【800-5,000 Pieces Per Package】

                                                            Dodge Bit Insert Standard SD (Brass Cadmium-Less)【1-800 Pieces Per Package】

                                                            Brass Bit Insert (Flange Type) / HFB

                                                            Stainless Steel/Insert Nut Threaded Type / IRU

                                                            Brass Bit Insert (Standard Model / Single-Sided Type) HSB

                                                            Stainless Steel/Aluminum Insert Nut Threaded Type (Loosening Prevention) / IRU-W

                                                            Brass Bit Insert (Standard, Double-sided) HSB-Z

                                                            E-Certs

                                                            Sprue (Unified) (UNC)【10-100 Pieces Per Package】

                                                            Stainless Steel Insert Nut, Screw-in (Thread Locker / Slotted) / IRU-SW

                                                            Brass Insert Nut (Screw-In Type / Slotted) IRB-S/IRB-SC

                                                            Brass Dutch Insert (Standard) / HSD

                                                            Sprue【1-100 Pieces Per Package】

                                                            Tangless Insert (SUS304)

                                                            Brass Insert Nut (Screw-In Type) IRB/IRB-C

                                                            Sprue (Unify) (UNF)【10 Pieces Per Package】

                                                            Lock Sprue【100 Pieces Per Package】

                                                            E-Sert Fine

                                                            Stainless Steel Recoil【100 Pieces Per Package】

                                                            Stainless Steel E-Sert Hemlock-Made【50-100 Pieces Per Package】

                                                            Stainless Steel E-Sert (Unify) (UNC)【100 Pieces Per Package】

                                                            Lock Type Sprew【100 Pieces Per Package】

                                                            Brass Insert Nut (Screw-In Type) IRB-W/-CW

                                                            Aluminum Insert Nut (Screw-In Type) IRL-B/IRL-K

                                                            Aluminum Insert Nut (Screw-In Type / Coated With Loosening Prevention Agent) IRL-BW/-KW

                                                            Brass Insert Nut (Screw-In Type / Slotted) IRB-SW/-SCW

                                                            Nylon Nut Insert / NNI

                                                            CAD
                                                            • 2D / 3D
                                                            Days to Ship 4 Day(s) or more 4 Day(s) or more 4 Day(s) or more 4 Day(s) or more 11 Day(s) or more 4 Day(s) or more 4 Day(s) or more 11 Day(s) or more 11 Day(s) or more 11 Day(s) or more 11 Day(s) or more 11 Day(s) or more 4 Day(s) or more 4 Day(s) or more 11 Day(s) or more 11 Day(s) or more 11 Day(s) or more 4 Day(s) or more 4 Day(s) or more 11 Day(s) or more 11 Day(s) or more 4 Day(s) or more 4 Day(s) or more 4 Day(s) or more 4 Day(s) or more 4 Day(s) or more 4 Day(s) or more 11 Day(s) or more 11 Day(s) or more 11 Day(s) or more 11 Day(s) or more 11 Day(s) or more
                                                            Screw Dia. M (after insertion)(mm)2 ~ 482 ~ 18332 ~ 43 ~ 4332 ~ 432 ~ 43 ~ 12-333 ~ 42 ~ 122.5 ~ 103-8103 ~ 62 ~ 20-533332.5 ~ 4
                                                            TypeStandardStandardStandardStandardSelf-TappingStandardStandardPress FitSelf-TappingPress FitSelf-TappingPress FitStandardStandardSelf-TappingSelf-TappingPress FitStandardTanglessSelf-TappingStandardStandardStandardStandardStandardStandardStandardSelf-TappingSelf-TappingSelf-TappingSelf-TappingPress Fit
                                                            MaterialBrassStainless Steel (SUS303/304)Stainless Steel (SUS303/304)BrassStainless Steel (SUS303/304)BrassBrassBrassStainless Steel (SUS303/304)BrassStainless Steel (SUS303/304)BrassStainless Steel (SUS303/304)Stainless Steel (SUS303/304)Stainless Steel (SUS303/304)BrassBrassStainless Steel (SUS303/304) / Phosphor BronzeStainless Steel (SUS303/304)BrassStainless Steel (SUS303/304)Stainless Steel (SUS303/304)Stainless Steel (SUS303/304)Stainless Steel (SUS303/304)Stainless Steel (SUS303/304)Stainless Steel (SUS303/304)Stainless Steel (SUS303/304)BrassAluminumAluminumBrassNylon
                                                            Screw TypeMetric (Coarse) ThreadMetric (Fine) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadUnified (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadUnified (Fine) ThreadMetric (Coarse) ThreadMetric (Fine) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadUnified (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) Thread
                                                            Length L (after insertion) (D = Thread Dia. M)3D3D3D3D3D3D3D3D3D3D3D3D3D3D3D3D3D3D3D3D3D3D3D3D3D3D3D3D3D3D3D3D
                                                            ApplicationResin GeneralLight MetalLight MetalResin GeneralCast IronResin GeneralResin GeneralLight MetalCast IronLight MetalCast IronLight MetalLight Metal / Cast Iron / Resin GeneralLight MetalCast IronLight MetalLight MetalLight MetalLight MetalLight MetalLight MetalLight MetalLight Metal / Cast Iron / Resin General----Light MetalLight MetalLight MetalLight MetalResin General
                                                            NotchNot ProvidedProvidedProvidedNot ProvidedNot ProvidedNot ProvidedNot ProvidedNot ProvidedNot ProvidedNot ProvidedNot ProvidedNot ProvidedProvidedProvidedNot ProvidedNot ProvidedNot ProvidedProvidedProvidedNot ProvidedProvidedProvidedProvidedProvidedProvidedProvidedProvidedNot ProvidedNot ProvidedNot ProvidedNot ProvidedNot Provided
                                                            Thread Dia. (After inserted), Unified(inch)-------------1/4-20 ~ #4-40------1/4-28 ~ 5/16-24----3/8-16 ~ 5/16-18------
                                                            ShapeStandard--StandardSlottedStandardStandardStandardStandardStandardStandardStandard--SlottedSlottedStandard--Standard---StandardStandardSlotted-StandardStandardStandardSlottedStandard
                                                            Sales UnitLow Quantity (Available beginning with 1 pc.) / Box, Pkg.Low Quantity (Available beginning with 1 pc.)Low Quantity (Available beginning with 1 pc.)Low Quantity (Available beginning with 1 pc.)Box, Pkg.Box, Pkg.Low Quantity (Available beginning with 1 pc.) / Box, Pkg.Box, Pkg.Box, Pkg.Box, Pkg.Box, Pkg.Box, Pkg.Low Quantity (Available beginning with 1 pc.)Box, Pkg.Box, Pkg.Box, Pkg.Box, Pkg.Low Quantity (Available beginning with 1 pc.) / Box, Pkg.Low Quantity (Available beginning with 1 pc.)Box, Pkg.Box, Pkg.Box, Pkg.Low Quantity (Available beginning with 1 pc.)Box, Pkg.Box, Pkg.Box, Pkg.Box, Pkg.Box, Pkg.Box, Pkg.Box, Pkg.Box, Pkg.Box, Pkg.

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