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Insert（Sales Unit：Box, Pkg. Page2）

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

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Search by specifying the lower class category

Brand	(2) (0) ACCURATE (0) BOHSEI (1) ESCO (0) HIROSUGI SEIKI (0) HIROSUGI-KEIKI (22) JAPAN DRIVEIT (1) KKV (0) KS SANGYO (2) NIPPON SPREW (5) RECOIL (6) SEL JAPAN (2) SUNCO (7) TOKAI METAL INDUSTRY (6) TSUGAMI (2)
CAD	2D 3D
Days to Ship	All Same day 5 Day(s) or Less 6 Day(s) or Less 7 Day(s) or Less 8 Day(s) or Less Others

56 items

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Sel Locking Fastener SLN (Non-Lock)【1,000 Pieces Per Package】

SEL JAPAN

Optimal nut for preventing looseness of vibrating parts, etc. For mounting, press in and tighten with a normal screwdriver. No special tools required.

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
3	-	Swaged	-	Stainless Steel (SUS303/304)	Metric (Coarse) Thread	-	Light Metal	Not Provided	-	-	Box, Pkg.	-

From: ₹ 73.60
Days to Ship: 5 Day(s) or more

5 Day(s) or more

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

NIPPON SPREW

Screw reinforcer featuring coiling of a diamond shaped stainless steel thread. Can achieve high-reliability tightening by using the springback skillfully.

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
-	-	Standard	-	Stainless Steel (SUS303/304)	Unified (Coarse) Thread	1D / 1.5D / 2D / 3D	Light Metal	Provided	1/2-13 ～ 7/8-9	-	Box, Pkg.	-

From: ₹ 54.34
Days to Ship: 5 Day(s) or more

5 Day(s) or more

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Sprue (Unify) (UNF)【50-100 Pieces Per Package】

NIPPON SPREW

Screw reinforcer featuring a coiled, diamond-shaped stainless steel thread. Can achieve high-reliability tightening by effective use of the the springback.

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
-	-	Standard	-	Stainless Steel (SUS303/304)	Unified (Fine) Thread	1D / 1.5D / 2D / 3D	Light Metal	Provided	1/2-20 ～ 9/16-18	-	Box, Pkg.	-

From: ₹ 54.48
Days to Ship: 5 Day(s) or more

5 Day(s) or more

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Recoil Packet for Spark Plugs【10 Pieces Per Package】

RECOIL

The spark plug kit contains a pilot tap. Thread diameter (after insertion) M (mm) 14 types: Threaded insert / Thread type: Fine / Material: SUS304 / Unit of purchase: Box/pack

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
14	-	Standard	-	Stainless Steel (SUS303/304)	Metric (Fine) Thread	-	-	-	-	-	Box, Pkg.	-

From: ₹ 145.23
Days to Ship: 5 Day(s) or more

5 Day(s) or more

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Recoil Packet (METRIC)【10 Pieces Per Package】

RECOIL

[Features]
· The recoil is created by coiling a high quality stainless steel wire with rhomboid cross section into a spring-like shape.
· The insert is slightly larger than the tap hole of the other base metal, and can be attached by lightly narrowing down.
· Once equipped, its spring effect makes it almost permanently non-extractable.

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
2	-	Standard	-	Stainless Steel (SUS303/304)	Metric (Coarse) Thread	1D / 2D	-	-	-	-	Box, Pkg.	-

From: ₹ 208.75
Days to Ship: 8 Day(s) or more

8 Day(s) or more

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

KS SANGYO

Tangless insert screw.
[Features]
· This tangless insert drastically cuts down on work procedures and time, which increases work efficiency, making it possible to reduce costs.
· Insert work, which took 56 seconds in the past, was drastically shortened to 7 seconds by using a dedicated power tool.
· Tangless design means no tangs to break off and no concerns for missing pitches or damaging the base material.
[Applications]
· For reinforcement of materials such as aluminum and plastic where female threads have low strength.
· Weight reduction is possible since it can be inserted into the base material of materials prone to female screw breakage.
· For countermeasures against vibration and reinforcement of spots where strong vibration is present, such as with industrial machinery and the engines of vehicles or motorcycles.
· Repairs and reforms broken, worn out, and crushed female threads.

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
2 ～ 12	-	Tangless	-	Stainless Steel (SUS303/304)	Metric (Coarse) Thread	1D / 1.5D / 2D	Light Metal / Cast Iron / Resin General	Provided	-	Standard	Box, Pkg.	-

From: ₹ 66.26
Days to Ship: 6 Day(s) or more

6 Day(s) or more

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Lock E-Sert【100 Pieces Per Package】

SUNCO

[Material] Stainless Steel
[Thread Size M] 2.5 2.6 3 4 5 6 8 10 12 14 16 18 20 22 24 27 30 33 36

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
2.5 ～ 16	-	Standard	-	Stainless Steel (SUS303/304)	Metric (Coarse) Thread	1D / 1.5D / 2D	-	Provided	-	-	Box, Pkg.	-

From: ₹ 53.56
Days to Ship: 5 Day(s) or more

5 Day(s) or more

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

HIROSUGI-KEIKI

[Nominal designation of thread (M)] 2.6/3/4/5/6/8
[Material] Free-cutting brass (C3604BD), cadmium content less than 75 ppm
[Treatment] Nickel plating (Ni)/degreasing

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
2.6 ～ 8	-	Self-Tapping	-	Brass	Metric (Coarse) Thread	1D / 1.5D / 2D / 2.5D / 3D / 0.8D / 3.5D	Light Metal	Not Provided	-	Standard	Box, Pkg.	-

From: ₹ 56.00
Days to Ship: 12 Day(s) or more

12 Day(s) or more

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Brass Dutch Insert (Standard) / HSD

HIROSUGI-KEIKI

[Nominal of Thread (M)] 2.6/3/4/5
[Material] Brass (C3604BD), Cadmium Content Less than 75 ppm
[Processing] Degreasing

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
2.6 ～ 5	-	Press Fit	-	Brass	Metric (Coarse) Thread	1.5D / 2D / 2.5D / 3D / 3.5D	Light Metal	Not Provided	-	Standard	Box, Pkg.	-

From: ₹ 41.00
Days to Ship: 12 Day(s) or more

12 Day(s) or more

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Brass Ultrasert IV (Flanged) / HFU

HIROSUGI-KEIKI

[Nominal of Thread (M)] 3/4/5/6/8
[Material] Brass (C3604BD), Cadmium Content Less than 75 ppm
[Processing] Degreasing

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
3 ～ 8	-	Press Fit	-	Brass	Metric (Coarse) Thread	1.5D / 2D / 2.5D	Light Metal	Not Provided	-	Standard	Box, Pkg.	-

From: ₹ 31.00
Days to Ship: 12 Day(s) or more

12 Day(s) or more

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Insert Nut, Screw-in Type, Insertion Jig, Dedicated for Without Slot / IR-00

HIROSUGI-KEIKI

* Only products without slits can be used.
Applicable Product Numbers: IRB-W, IRB-CW, IRB, IRB-C, IRU-W, IRU, IRL-KW, IRL-BW, IRL-K, IRL-B

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
-	-	Tool	-	-	-	-	-	-	-	-	Box, Pkg.	-

From: ₹ 9,120.00
Days to Ship: 12 Day(s) or more

12 Day(s) or more


Brand
Product Series
CAD
From
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

	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare
Brand	SEL JAPAN	NIPPON SPREW	NIPPON SPREW	RECOIL	RECOIL	KS SANGYO	SUNCO	HIROSUGI-KEIKI	HIROSUGI-KEIKI	HIROSUGI-KEIKI	HIROSUGI-KEIKI
Product Series	Sel Locking Fastener SLN (Non-Lock)【1,000 Pieces Per Package】	Sprue (Unified) (UNC)【10-100 Pieces Per Package】	Sprue (Unify) (UNF)【50-100 Pieces Per Package】	Recoil Packet for Spark Plugs【10 Pieces Per Package】	Recoil Packet (METRIC)【10 Pieces Per Package】	Screw Reinforcement Tangless Insert【10-20 Pieces Per Package】	Lock E-Sert【100 Pieces Per Package】	Brass Insert Nut (Screw-In Type) IRB-W/-CW	Brass Dutch Insert (Standard) / HSD	Brass Ultrasert IV (Flanged) / HFU	Insert Nut, Screw-in Type, Insertion Jig, Dedicated for Without Slot / IR-00
CAD
From	₹ 73,600.00	₹ 624.00	₹ 2,724.00	₹ 1,452.25	₹ 2,087.49	₹ 1,325.04	₹ 5,355.20	₹ 56.00	₹ 41.00	₹ 31.00	₹ 9,120.00
Days to Ship	5 Day(s) or more	5 Day(s) or more	5 Day(s) or more	5 Day(s) or more	8 Day(s) or more	6 Day(s) or more	5 Day(s) or more	12 Day(s) or more	12 Day(s) or more	12 Day(s) or more	12 Day(s) or more
Screw Dia. M (after insertion)(mm)	3	-	-	14	2	2 ～ 12	2.5 ～ 16	2.6 ～ 8	2.6 ～ 5	3 ～ 8	-
Environmentally friendly	-	-	-	-	-	-	-	-	-	-	-
Type	Swaged	Standard	Standard	Standard	Standard	Tangless	Standard	Self-Tapping	Press Fit	Press Fit	Tool
Characteristics/Applications	-	-	-	-	-	-	-	-	-	-	-
Material	Stainless 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)	Brass	Brass	Brass	-
Screw Type	Metric (Coarse) Thread	Unified (Coarse) Thread	Unified (Fine) Thread	Metric (Fine) Thread	Metric (Coarse) Thread	Metric (Coarse) Thread	Metric (Coarse) Thread	Metric (Coarse) Thread	Metric (Coarse) Thread	Metric (Coarse) Thread	-
Length L (after insertion) (D = Thread Dia. M)	-	1D / 1.5D / 2D / 3D	1D / 1.5D / 2D / 3D	-	1D / 2D	1D / 1.5D / 2D	1D / 1.5D / 2D	1D / 1.5D / 2D / 2.5D / 3D / 0.8D / 3.5D	1.5D / 2D / 2.5D / 3D / 3.5D	1.5D / 2D / 2.5D	-
Application	Light Metal	Light Metal	Light Metal	-	-	Light Metal / Cast Iron / Resin General	-	Light Metal	Light Metal	Light Metal	-
Notch	Not Provided	Provided	Provided	-	-	Provided	Provided	Not Provided	Not Provided	Not Provided	-
Thread Dia. (After inserted), Unified(inch)	-	1/2-13 ～ 7/8-9	1/2-20 ～ 9/16-18	-	-	-	-	-	-	-	-
Shape	-	-	-	-	-	Standard	-	Standard	Standard	Standard	-
Sales Unit	Box, Pkg.	Box, Pkg.	Box, Pkg.	Box, Pkg.	Box, Pkg.	Box, Pkg.	Box, Pkg.	Box, Pkg.	Box, Pkg.	Box, Pkg.	Box, Pkg.
Cleaning Method	-	-	-	-	-	-	-	-	-	-	-

Configure

Specification/Dimensions

Screw Dia. M (after insertion)(mm)
1.4

1.6

1.7

2

2.2

2.5

2.6

3

3.5

4

5

6

6a

7

8

9

10

11

12

14

15

16

18

20

22

24

27

30

36

39

42
Drawing

Clear

Environmentally friendly
- RoHS Compliant (10 Substances)
Clear

Type
- Standard
- Tangless
- Self-Tapping
- Tool
- Swaged
- Press Fit
Images

Clear

Characteristics/Applications
Clean Washed
Details

Clear

Material
- Steel
- Stainless Steel (SUS303/304)
- Stainless Steel (SUS316)
- Stainless Steel (SUS430F)
- Brass
- Phosphor Bronze
- Inconel X-750
- Nitrox 60
- Aluminum
- Nylon
Clear

Screw Type
- Metric (Coarse) Thread
- Metric (Fine) Thread
- Unified (Coarse) Thread
- Unified (Fine) Thread
- BSW (Coarse) Thread
Clear

Length L (after insertion) (D = Thread Dia. M)
- 1D
- 1.5D
- 2D
- 2.5D
- 3D
- 0.5D
- 0.7D
- 0.8D
- 3.5D
- 4D
Drawing

Clear

Application
- Light Metal
- Cast Iron
- Resin General
Clear

Notch
- Not Provided
- Provided
Clear

Thread Dia. (After inserted), Unified(inch)
1"-12

1"-8

1/2

1/2"

1/2-20

1/2-13

1/4

1/4"

1/4-28

1/4-20

2

3/4-16

3/4-10

3/8

3/8"

3/8-24

3/8-16

4

#4-48

#4-40

5/8

5/8"

5/8-18

5/8-11

5/16

5/16"

5/16-24

5/16-18

6

#6-40

#6-32

7/8-14

7/8-9

7/16"

7/16-20

7/16-14

8

No. 8

#8-36

#8-32

9/16-18

10

No. 10

#10-32

#10-24

#12-24
Clear