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Insert(Length L (after insertion) (D = Thread Dia. M):1D)

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
  • 1 Day(s) or Less
  • 8 Day(s) or Less
  • 10 Day(s) or Less
  • 11 Day(s) or Less
  • 12 Day(s) or Less
  • 13 Day(s) or Less
  • 14 Day(s) or Less
  • 15 Day(s) or Less
  • 16 Day(s) or Less
Brand
Product Series
CAD
Days to Ship
Screw Dia. M (after insertion)(mm)
Environmentally friendly
Type
Characteristics/Applications
Material
Screw Type
Length L (after insertion) (D = Thread Dia. M)
Application
Notch
Thread Dia. (After inserted), Unified(inch)
Shape
Sales Unit
Cleaning Method
  • On Sale Till 31/03/2025

Recoil-Free (mm) SUS304

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

      Sprue (Unify) (UNF)

        Recoil Free (UNC) SUS304

          Sprue (Unified) (UNC)

            Lock Recoil (mm) SUS304

              E-Certs

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

                  Male Screw Repair Coil Thread -R

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

                      Recoil-Free (Specified mm) SUS304

                        Sprue

                          Recoil Packet (Milli)

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

                              Recoil-Free (UNF) SUS304

                                Stainless Steel E-Sert Fine (Hemlock-Made)

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

                                    Lock Sprue

                                      E-Sert Unified (UNC)

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

                                          Tangless Insert (SUS304)

                                            Stainless Steel Recoil

                                              Lock E-Sert

                                                Stainless Steel/Insert Nut Threaded Type / IRU

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

                                                    Tangless Insert Metric Coarse

                                                      Sprue (Fine, P=1.25)

                                                        Ultrasert UD2 / UD4 (Brass Cadmium-Free)

                                                          Dodge Bit Insert Standard SD (Brass Cadmium-Less)

                                                            Dodge Bit Insert Flange Type  (Brass Cadmium-Free)

                                                              Insert Phosphor Bronze

                                                                Insert, Inconel X-750

                                                                  Techlock (SL)

                                                                    Sparrow (Type SP)

                                                                      Tangless insert metric coarselocking

                                                                        Tangless insert metric coarsephosphor bronze

                                                                          Tangless insert metric coarsetaping packaging

                                                                            Stainless Steel Tangless Insert

                                                                              Screw Reinforcement Tangless Insert

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

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

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

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

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

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

                                                                                          Brand

                                                                                          RECOIL

                                                                                          HIROSUGI-KEIKI

                                                                                          NIPPON SPREW

                                                                                          RECOIL

                                                                                          NIPPON SPREW

                                                                                          RECOIL

                                                                                          TSUGAMI

                                                                                          TOKAI METAL INDUSTRY

                                                                                          KS SANGYO

                                                                                          HIROSUGI-KEIKI

                                                                                          RECOIL

                                                                                          NIPPON SPREW

                                                                                          RECOIL

                                                                                          HIROSUGI-KEIKI

                                                                                          RECOIL

                                                                                          SUNCO

                                                                                          HIROSUGI-KEIKI

                                                                                          NIPPON SPREW

                                                                                          TSUGAMI

                                                                                          TOKAI METAL INDUSTRY

                                                                                          RECOIL

                                                                                          SUNCO

                                                                                          SUNCO

                                                                                          HIROSUGI-KEIKI

                                                                                          HIROSUGI-KEIKI

                                                                                          ACCURATE

                                                                                          NIPPON SPREW

                                                                                          TOKAI METAL INDUSTRY

                                                                                          TOKAI METAL INDUSTRY

                                                                                          TOKAI METAL INDUSTRY

                                                                                          RECOIL

                                                                                          RECOIL

                                                                                          JAPAN DRIVEIT

                                                                                          JAPAN DRIVEIT

                                                                                          ACCURATE

                                                                                          ACCURATE

                                                                                          ACCURATE

                                                                                          SUNCO

                                                                                          KS SANGYO

                                                                                          HIROSUGI-KEIKI

                                                                                          HIROSUGI-KEIKI

                                                                                          HIROSUGI-KEIKI

                                                                                          HIROSUGI-KEIKI

                                                                                          HIROSUGI-KEIKI

                                                                                          HIROSUGI-KEIKI

                                                                                          Product Series

                                                                                          Recoil-Free (mm) SUS304【1-3 Pieces Per Package】

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

                                                                                          Sprue (Unify) (UNF)【1-100 Pieces Per Package】

                                                                                          Recoil Free (UNC) SUS304

                                                                                          Sprue (Unified) (UNC)【1-100 Pieces Per Package】

                                                                                          Lock Recoil (mm) SUS304

                                                                                          E-Certs

                                                                                          Dodge Bit Insert (Standard) SB Brass (Cadmium-Free)【1-8,000 Pieces Per Package】

                                                                                          Male Screw Repair Coil Thread -R【20 Pieces Per Package】

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

                                                                                          Recoil-Free (Specified mm) SUS304

                                                                                          Sprue【1-100 Pieces Per Package】

                                                                                          Recoil Packet (Milli)【10 Pieces Per Package】

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

                                                                                          Recoil-Free (UNF) SUS304

                                                                                          Stainless Steel E-Sert Fine (Hemlock-Made)【1-100 Pieces Per Package】

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

                                                                                          Lock Sprue

                                                                                          E-Sert Unified (UNC)

                                                                                          DODGE BET Insert (Standard), Double Sided Chamfer Type, Brass (Cadmium-Free)【1-15,000 Pieces Per Package】

                                                                                          Tangless Insert (SUS304)

                                                                                          Stainless Steel Recoil【1-100 Pieces Per Package】

                                                                                          Lock E-Sert【1-100 Pieces Per Package】

                                                                                          Stainless Steel/Insert Nut Threaded Type / IRU

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

                                                                                          Tangless Insert Metric Coarse

                                                                                          Sprue (Fine, P=1.25)

                                                                                          Ultrasert UD2 / UD4 (Brass Cadmium-Free)【1-800 Pieces Per Package】

                                                                                          Dodge Bit Insert Standard SD (Brass Cadmium-Less)

                                                                                          Dodge Bit Insert Flange Type (Brass Cadmium-Free)【1-3,000 Pieces Per Package】

                                                                                          Insert Phosphor Bronze

                                                                                          Insert, Inconel X-750

                                                                                          Techlock (SL)

                                                                                          Sparrow (Type SP)

                                                                                          Tangless insert metric coarselocking

                                                                                          Tangless insert metric coarsephosphor bronze

                                                                                          Tangless insert metric coarsetaping packaging

                                                                                          Stainless Steel Tangless Insert

                                                                                          Screw Reinforcement Tangless Insert【10-20 Pieces Per Package】

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

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

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

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

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

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

                                                                                          CAD
                                                                                          • 2D / 3D
                                                                                          Days to Ship 8 Day(s) or more 21 Day(s) or more 8 Day(s) or more 8 Day(s) or more 8 Day(s) or more 8 Day(s) or more 8 Day(s) or more 8 Day(s) or more 17 Day(s) or more 15 Day(s) or more 8 Day(s) or more 8 Day(s) or more 8 Day(s) or more 21 Day(s) or more 11 Day(s) or more 8 Day(s) or more 15 Day(s) or more 8 Day(s) or more 8 Day(s) or more 8 Day(s) or more 8 Day(s) or more 8 Day(s) or more 8 Day(s) or more 15 Day(s) or more 21 Day(s) or more 8 Day(s) or more 8 Day(s) or more 8 Day(s) or more 8 Day(s) or more 8 Day(s) or more 8 Day(s) or more 8 Day(s) or more 8 Day(s) or more 8 Day(s) or more 8 Day(s) or more 12 Day(s) or more 8 Day(s) or more 8 Day(s) or more 8 Day(s) or more 15 Day(s) or more 21 Day(s) or more 15 Day(s) or more 15 Day(s) or more 8 Day(s) or more 15 Day(s) or more
                                                                                          Screw Dia. M (after insertion)(mm)2 ~ 422.6 ~ 8---3 ~ 202 ~ 242 ~ 63 ~ 62 ~ 88 ~ 242 ~ 306 ~ 102.6 ~ 8-6 ~ 302.6 ~ 810-1.7 ~ 62.5 ~ 122 ~ 163 ~ 162 ~ 82.6 ~ 82 ~ 2410 ~ 202.6 ~ 1053 ~ 83 ~ 243 ~ 123 ~ 1042.5 ~ 123 ~ 62.5 ~ 52 ~ 162 ~ 122.6 ~ 82 ~ 82.6 ~ 82.6 ~ 82 ~ 52 ~ 5
                                                                                          Environmentally friendly---------------------------------------------
                                                                                          TypeStandardSelf-TappingStandardStandardStandardStandardStandardStandardStandardSelf-TappingStandardStandardStandardSelf-TappingStandardStandardSelf-TappingStandardStandardStandardTanglessStandardStandardSelf-TappingSelf-TappingTanglessStandardStandardStandardStandardStandardStandardPress FitPress FitTanglessTanglessTanglessTanglessTanglessSelf-TappingSelf-TappingSelf-TappingSelf-TappingPress FitPress Fit
                                                                                          Characteristics/Applications---------------------------------------------
                                                                                          MaterialStainless 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)BrassStainless Steel (SUS303/304)BrassStainless Steel (SUS303/304)Stainless Steel (SUS303/304) / Phosphor BronzeStainless 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)BrassStainless Steel (SUS303/304)Stainless Steel (SUS303/304)Stainless Steel (SUS303/304)Stainless Steel (SUS303/304)AluminumStainless Steel (SUS303/304)Stainless Steel (SUS303/304)BrassBrassBrassPhosphor BronzeInconel X-750BrassBrassStainless Steel (SUS303/304)Phosphor BronzeStainless Steel (SUS303/304)Stainless Steel (SUS303/304)Stainless Steel (SUS303/304)BrassAluminumBrassBrassBrassBrass
                                                                                          Screw TypeMetric (Coarse) ThreadMetric (Coarse) ThreadUnified (Fine) ThreadUnified (Coarse) ThreadUnified (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadMetric (Fine) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadUnified (Fine) ThreadMetric (Fine) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadUnified (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) Thread / Metric (Fine) ThreadMetric (Fine) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) ThreadMetric (Coarse) Thread
                                                                                          Length L (after insertion) (D = Thread Dia. M)1D1D1D1D1D1D1D1D1D1D1D1D1D1D1D1D1D1D1D1D1D1D1D1D1D1D1D1D1D1D1D1D1D1D1D1D1D1D1D1D1D1D1D1D1D
                                                                                          ApplicationLight MetalCast IronLight MetalLight MetalLight MetalLight MetalLight Metal / Cast Iron / Resin GeneralResin GeneralLight Metal / Cast Iron / Resin GeneralLight MetalLight MetalLight MetalLight MetalCast IronLight Metal-Cast IronLight MetalLight Metal / Cast Iron / Resin GeneralResin GeneralLight Metal--Cast IronLight MetalLight Metal / Cast Iron / Resin GeneralLight MetalResin GeneralResin GeneralResin GeneralLight MetalLight Metal / Cast Iron-Resin GeneralLight Metal / Cast Iron / Resin GeneralLight Metal / Cast Iron / Resin GeneralLight Metal / Cast Iron / Resin General-Light Metal / Cast Iron / Resin GeneralLight MetalLight MetalLight MetalLight MetalLight MetalLight Metal
                                                                                          NotchProvidedNot ProvidedProvidedProvidedProvidedProvidedProvidedNot ProvidedProvidedNot ProvidedProvidedProvidedProvidedNot ProvidedProvidedProvidedNot ProvidedProvidedProvidedNot ProvidedNot ProvidedProvidedProvidedNot ProvidedNot ProvidedNot ProvidedProvidedNot ProvidedNot ProvidedNot ProvidedProvidedProvidedNot ProvidedNot Provided---ProvidedProvidedNot ProvidedNot ProvidedNot ProvidedNot ProvidedNot ProvidedNot Provided
                                                                                          Thread Dia. (After inserted), Unified(inch)--1/4-28 ~ #10-321/2-13 ~ #10-241/2-13 ~ #10-24---------1/2-20 ~ #10-32------------------------------
                                                                                          Shape-Slotted-----StandardStandardStandard---Slotted-StandardStandard--Standard-Standard-StandardStandard--StandardStandardStandard--StandardStandard---StandardStandardStandardStandardSlottedSlottedStandardStandard
                                                                                          Sales UnitLow Quantity (Available beginning with 1 pc.) / Box, Pkg.Box, Pkg.Low Quantity (Available beginning with 1 pc.) / Box, Pkg.Low Quantity (Available beginning with 1 pc.)Low 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.Box, Pkg.Low Quantity (Available beginning with 1 pc.)Low Quantity (Available beginning with 1 pc.) / Box, Pkg.Box, Pkg.Box, Pkg.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.)Low Quantity (Available beginning with 1 pc.)Low Quantity (Available beginning with 1 pc.) / Box, Pkg.Low Quantity (Available beginning with 1 pc.)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.)Low Quantity (Available beginning with 1 pc.) / Box, Pkg.Low Quantity (Available beginning with 1 pc.)Low 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.)Low Quantity (Available beginning with 1 pc.)---Low Quantity (Available beginning with 1 pc.)Box, Pkg.Box, Pkg.Box, Pkg.Box, Pkg.Box, Pkg.Low Quantity (Available beginning with 1 pc.) / Box, Pkg.Box, Pkg.
                                                                                          Cleaning Method---------------------------------------------

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