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Insert(Length L (after insertion) (D = Thread Dia. M):1.5D)

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
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  • Same day
  • 1 Day(s) or Less
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  • 9 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
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

    Lock Recoil (mm) SUS304

      Sprue (Unify) (UNF)

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

          Recoil Free (UNC) SUS304

            Recoil-Free (Specified mm) SUS304

              Tangless Insert (SUS304)

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

                  Sprue (Unified) (UNC)

                    Dodge Bit Insert Flange Type  (Brass Cadmium-Free)

                      Insert Phosphor Bronze

                        Stainless Steel Recoil

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

                            Sprue

                              E-Certs

                                Recoil-Free (UNF) SUS304

                                  Insert, Inconel X-750

                                    Stainless Steel E-Sert Fine (Hemlock-Made)

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

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

                                          Coil Thread R

                                            Tangless Insert Metric Coarse

                                              Sprue (Fine, P=1.25)

                                                Lock Sprue

                                                  Ultrasert UD2 / UD4 (Brass Cadmium-Free)

                                                    Dodge Insert Flange Type (Brass Cadmium-Less)

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

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

                                                          Dodge Bit Insert Standard SD (Brass Cadmium-Less)

                                                            TEC Sonic (TEC Type)

                                                              Techlock (SL)

                                                                Flat Head Sonic Lock (Type SHK)

                                                                  Sparrow (Type SP)

                                                                    Sparrow Insert With Flat Head (HSR Type)

                                                                      B-LOK N42 Type

                                                                        Fin-Lok (FL Type)

                                                                          Heat-Lok (HL Type)

                                                                            Tangless insert metric coarselocking

                                                                              Tangless insert metric coarsephosphor bronze

                                                                                Tangless insert metric coarsetaping packaging

                                                                                  Stainless Steel Tangless Insert

                                                                                    Screw Reinforcement Tangless Insert

                                                                                      Male Screw Repair Coil Thread -R

                                                                                        Lock E-Sert

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

                                                                                          Brand

                                                                                          RECOIL

                                                                                          RECOIL

                                                                                          NIPPON SPREW

                                                                                          HIROSUGI-KEIKI

                                                                                          RECOIL

                                                                                          RECOIL

                                                                                          RECOIL

                                                                                          HIROSUGI-KEIKI

                                                                                          NIPPON SPREW

                                                                                          TOKAI METAL INDUSTRY

                                                                                          RECOIL

                                                                                          SUNCO

                                                                                          HIROSUGI-KEIKI

                                                                                          NIPPON SPREW

                                                                                          TSUGAMI

                                                                                          RECOIL

                                                                                          RECOIL

                                                                                          SUNCO

                                                                                          HIROSUGI-KEIKI

                                                                                          HIROSUGI-KEIKI

                                                                                          ACCURATE

                                                                                          ACCURATE

                                                                                          NIPPON SPREW

                                                                                          NIPPON SPREW

                                                                                          TOKAI METAL INDUSTRY

                                                                                          TOKAI METAL INDUSTRY

                                                                                          TOKAI METAL INDUSTRY

                                                                                          TOKAI METAL INDUSTRY

                                                                                          TOKAI METAL INDUSTRY

                                                                                          JAPAN DRIVEIT

                                                                                          JAPAN DRIVEIT

                                                                                          JAPAN DRIVEIT

                                                                                          JAPAN DRIVEIT

                                                                                          JAPAN DRIVEIT

                                                                                          JAPAN DRIVEIT

                                                                                          JAPAN DRIVEIT

                                                                                          JAPAN DRIVEIT

                                                                                          ACCURATE

                                                                                          ACCURATE

                                                                                          ACCURATE

                                                                                          SUNCO

                                                                                          KS SANGYO

                                                                                          KS SANGYO

                                                                                          SUNCO

                                                                                          HIROSUGI-KEIKI

                                                                                          Product Series

                                                                                          Recoil-Free (mm) SUS304

                                                                                          Lock Recoil (mm) SUS304

                                                                                          Sprue (Unify) (UNF)【10-100 Pieces Per Package】

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

                                                                                          Recoil Free (UNC) SUS304

                                                                                          Recoil-Free (Specified mm) SUS304

                                                                                          Tangless Insert (SUS304)

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

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

                                                                                          Dodge Bit Insert Flange Type (Brass Cadmium-Free)

                                                                                          Insert Phosphor Bronze

                                                                                          Stainless Steel Recoil【1-100 Pieces Per Package】

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

                                                                                          Sprue【1-100 Pieces Per Package】

                                                                                          E-Certs

                                                                                          Recoil-Free (UNF) SUS304

                                                                                          Insert, Inconel X-750

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

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

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

                                                                                          Coil Thread R

                                                                                          Tangless Insert Metric Coarse

                                                                                          Sprue (Fine, P=1.25)【1-100 Pieces Per Package】

                                                                                          Lock Sprue

                                                                                          Ultrasert UD2 / UD4 (Brass Cadmium-Free)【1-600 Pieces Per Package】

                                                                                          Dodge Insert Flange Type (Brass Cadmium-Less)

                                                                                          DODGE BET Insert (Standard), Double Sided Chamfer Type, Brass (Cadmium-Free)【1-10,000 Pieces Per Package】

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

                                                                                          Dodge Bit Insert Standard SD (Brass Cadmium-Less)

                                                                                          TEC Sonic (TEC Type)【500 Pieces Per Package】

                                                                                          Techlock (SL)【1-5,000 Pieces Per Package】

                                                                                          Flat Head Sonic Lock (Type SHK)

                                                                                          Sparrow (Type SP)

                                                                                          Sparrow Insert With Flat Head (HSR Type)

                                                                                          B-LOK N42 Type

                                                                                          Fin-Lok (FL Type)

                                                                                          Heat-Lok (HL Type)【1,000 Pieces Per Package】

                                                                                          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】

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

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

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

                                                                                          CAD
                                                                                          • 2D / 3D
                                                                                          Days to Ship Same day or more 8 Day(s) or more 13 Day(s) or more 21 Day(s) or more 8 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 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 15 Day(s) or more 15 Day(s) or more 13 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 24 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 8 Day(s) or more 12 Day(s) or more 12 Day(s) or more 8 Day(s) or more 8 Day(s) or more 17 Day(s) or more 8 Day(s) or more 15 Day(s) or more
                                                                                          Screw Dia. M (after insertion)(mm)2 ~ 423 ~ 20-2.6 ~ 8-8 ~ 242.5 ~ 122 ~ 8-2 ~ 63 ~ 242 ~ 162.6 ~ 82 ~ 302 ~ 24-3 ~ 126 ~ 392.6 ~ 82.6 ~ 83 ~ 62 ~ 2010 ~ 205 ~ 63 ~ 84 ~ 61.4 ~ 62 ~ 82.6 ~ 582 ~ 885 ~ 65 ~ 83332.5 ~ 123 ~ 62.5 ~ 52 ~ 202 ~ 123 ~ 62.5 ~ 202.6 ~ 8
                                                                                          Environmentally friendly---------------------------------------------
                                                                                          TypeStandardStandardStandardSelf-TappingStandardStandardTanglessSelf-TappingStandardStandardStandardStandardSelf-TappingStandardStandardStandardStandardStandardSelf-TappingSelf-TappingStandardTanglessStandardStandardStandardStandardStandardStandardStandardPress FitPress FitPress FitPress FitPress FitPress FitPress FitPress FitTanglessTanglessTanglessTanglessTanglessStandardStandardSelf-Tapping
                                                                                          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)BrassPhosphor BronzeStainless Steel (SUS303/304)Stainless Steel (SUS303/304)Stainless Steel (SUS303/304) / Phosphor BronzeStainless Steel (SUS303/304)Stainless Steel (SUS303/304)Inconel X-750Stainless Steel (SUS303/304)Stainless Steel (SUS303/304)BrassStainless Steel (SUS303/304)Stainless Steel (SUS303/304)Stainless Steel (SUS303/304)Stainless Steel (SUS303/304)BrassBrassBrassBrassBrassBrassBrassBrassBrassBrassBrassBrassBrassStainless Steel (SUS303/304)Phosphor BronzeStainless Steel (SUS303/304)Stainless Steel (SUS303/304)Stainless Steel (SUS303/304)Stainless Steel (SUS303/304)Stainless Steel (SUS303/304)Brass
                                                                                          Screw TypeMetric (Coarse) ThreadMetric (Coarse) ThreadUnified (Fine) ThreadMetric (Coarse) ThreadUnified (Coarse) ThreadMetric (Fine) 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) ThreadMetric (Coarse) ThreadMetric (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) 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)1.5D1.5D1.5D1.5D1.5D1.5D1.5D1.5D1.5D1.5D1.5D1.5D1.5D1.5D1.5D1.5D1.5D1.5D1.5D1.5D1.5D1.5D1.5D1.5D1.5D1.5D1.5D1.5D1.5D1.5D1.5D1.5D1.5D1.5D1.5D1.5D1.5D1.5D1.5D1.5D1.5D1.5D1.5D1.5D1.5D
                                                                                          ApplicationLight MetalLight MetalLight MetalCast IronLight MetalLight MetalLight MetalLight MetalLight MetalResin GeneralLight Metal-Cast IronLight MetalLight Metal / Cast Iron / Resin GeneralLight MetalLight Metal / Cast Iron-Cast IronLight MetalLight Metal / Cast Iron / Resin GeneralLight Metal / Cast Iron / Resin GeneralLight MetalLight MetalResin GeneralResin GeneralResin GeneralResin GeneralResin General---Resin General---Resin GeneralLight Metal / Cast Iron / Resin GeneralLight Metal / Cast Iron / Resin GeneralLight Metal / Cast Iron / Resin General-Light Metal / Cast Iron / Resin GeneralLight Metal / Cast Iron / Resin General-Light Metal
                                                                                          NotchProvidedProvidedProvidedNot ProvidedProvidedProvidedNot ProvidedNot ProvidedProvidedNot ProvidedProvidedProvidedNot ProvidedProvidedProvidedProvidedProvidedProvidedNot ProvidedNot Provided-Not ProvidedProvidedProvidedNot ProvidedNot ProvidedNot ProvidedNot ProvidedNot ProvidedNot ProvidedNot ProvidedNot ProvidedNot ProvidedNot ProvidedNot ProvidedNot ProvidedNot Provided---ProvidedProvidedProvidedProvidedNot Provided
                                                                                          Thread Dia. (After inserted), Unified(inch)--3/8-24 ~ 5/16-1/2-13 ~ #12-24---1/2-13 ~ #10-24------1"-12 ~ #10-32-----------------------------
                                                                                          Shape---Slotted---Standard-Standard-StandardSlotted----StandardStandardSlotted----StandardStandardStandardStandardStandardStandardStandardStandardStandardStandardStandardStandardStandard---StandardStandardStandard-Standard
                                                                                          Sales UnitLow 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.) / 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.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.--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.) / 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.Low Quantity (Available beginning with 1 pc.) / Box, Pkg.Box, Pkg.
                                                                                          Cleaning Method---------------------------------------------

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