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Insert（Screw Type：Unified (Fine) Thread）

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

11 items

: 30; 45; 60

Days to Ship	All Same day 3 Day(s) or Less 4 Day(s) or Less 5 Day(s) or Less 6 Day(s) or Less 7 Day(s) or Less 8 Day(s) or Less 9 Day(s) or Less 10 Day(s) or Less 11 Day(s) or Less

Recoil-Free (UNF) SUS304

RECOIL

The material is normal stainless steel 304 (18–8), but the material has been manufactured with other materials added for special applications.

Standard Price:	SGD 1.16-
Days to Ship:	4 Day(s) or more

Recoil Packet (UNF)

Recoil Packet (UNF)【10 Pieces Per Package】

RECOIL

*Unfortunately, only lengths of 1.5D are available.

[Features]
• Recoil created by winding high quality stainless steel wire with a rhomboid cross section into a spring shape
• Insert is made one turn larger than the base material hole, and has a mild taper
• Once installed, the spring action makes it an almost permanent fixture that cannot be extracted.

Standard Price:	SGD 8.09-
Days to Ship:	4 Day(s) or more

Stainless Steel E-Sert (Unify) (UNF)

Stainless Steel E-Sert (Unify) (UNF)【1-100 Pieces Per Package】

SUNCO

[Nominal] #6-40, #8-36, #10-32, 1/4-28, 5/16-24, 3/8-24, 7/16-20, 1/2-20, 5/8-18, 3/4-16, 7/8-14, 1-12
[Material] Stainless Steel
[Surface Processing] Bare

Standard Price:	SGD 1.64-
Days to Ship:	4 Day(s) or more

Sprue (Unify) (UNF)

Sprue (Unify) (UNF)【1-100 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.

Standard Price:	SGD 1.56-
Days to Ship:	4 Day(s) or more

Stainless Steel Sprue (Unify) (UNF)

SUNCO

[Material] Stainless Steel
[Surface Processing] Bare

Standard Price:	SGD 2.91
Days to Ship:	4 Day(s) or more

Tangless Insert Unified Fine

ACCURATE

Unified size tangless insert that reduces the number of work steps and greatly reduces working cost compared to inserts with a tang.

Standard Price:	SGD 0.76-
Days to Ship:	6 Day(s) or more

Ensat Expanded Slot Type, Model 302, Inch Type

KKV

[Features]
· Can be used for free-cutting type aluminum alloy, high-plasticity resin, etc.
· The expanded slots act as cutting edges and are long in length, providing good engagement with the corresponding material.
· If you set a small pilot hole diameter and insert into a hard material, the slots on the tip will contract (taper), potentially leading to defective machining.

[Materials]
SUM22L free-cutting steel (equivalent), hexavalent chromate

Standard Price:	SGD 1.92-
Days to Ship:	4 Day(s) or more

E-Sert Unified (UNF)

TSUGAMI

Old 'Heli-Coils Inserted'. The screws of the main body are reinforced, ensuring a highly durable fastening.

Standard Price:	SGD 1.56
Days to Ship:	4 Day(s) or more

Tangless insert unified fine locking

ACCURATE

A tangless insert with a function that prevents loosening. The center of this material is hexagonal shaped to prevent loosening.

Standard Price:	SGD 0.82-
Days to Ship:	8 Day(s) or more

E-Sert Spiral Tap

SUNCO

[Nominal M] 2, 2.5, 2.6, 5, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 27, 30, 36
[Nominal W] #2-56, #4-40, #6-32, #8-32, #10-24, 1/4, 5/16, 3/8, 1/2, 5/8, 3/4, 1-8

Standard Price:	SGD 35.77-
Days to Ship:	7 Day(s) or more

Screw Insertion Tool INP UNF

SUNCO

[Nominal W] #6-40, #8-36, 1/4, 5/16, 3/8, 7/16, 1/2, 5/8, 3/4, 7/8

Standard Price:	SGD 103.99-
Days to Ship:	7 Day(s) or more


Brand
Product Series
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


Brand	RECOIL	RECOIL	SUNCO	NIPPON SPREW	SUNCO	ACCURATE	KKV	TSUGAMI	ACCURATE	SUNCO	SUNCO
Product Series	Recoil-Free (UNF) SUS304	Recoil Packet (UNF)【10 Pieces Per Package】	Stainless Steel E-Sert (Unify) (UNF)【1-100 Pieces Per Package】	Sprue (Unify) (UNF)【1-100 Pieces Per Package】	Stainless Steel Sprue (Unify) (UNF)	Tangless Insert Unified Fine	Ensat Expanded Slot Type, Model 302, Inch Type	E-Sert Unified (UNF)	Tangless insert unified fine locking	E-Sert Spiral Tap	Screw Insertion Tool INP UNF
Days to Ship	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	6 Day(s) or more	4 Day(s) or more	4 Day(s) or more	8 Day(s) or more	7 Day(s) or more	7 Day(s) or more
Screw Dia. M (after insertion)(mm)	-	-	-	-	-	-	-	-	-	-	-
Type	Standard	Standard	Standard	Standard	Standard	Tangless	Self-Tapping	Standard	Tangless	Tool	Tool
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)	Steel	Stainless Steel (SUS303/304)	Stainless Steel (SUS303/304)	-	-
Screw Type	Unified (Fine) Thread	Unified (Fine) Thread	Unified (Fine) Thread	Unified (Fine) Thread	Unified (Fine) Thread	Unified (Fine) Thread	Unified (Fine) Thread	Unified (Fine) Thread	Unified (Fine) Thread	Unified (Fine) Thread	Unified (Fine) Thread
Length L (after insertion) (D = Thread Dia. M)	1D / 1.5D / 2D	1.5D	1D / 1.5D / 2D / 2.5D	1D / 1.5D / 2D / 3D	1D	1D / 1.5D / 2D	-	-	1D / 1.5D / 2D	-	-
Application	Light Metal	Light Metal	-	Light Metal	-	Light Metal / Cast Iron / Resin General	-	Light Metal / Cast Iron / Resin General	Light Metal / Cast Iron / Resin General	-	-
Notch	Provided	Provided	Provided	Provided	Provided	-	-	Provided	-	-	-
Thread Dia. (After inserted), Unified(inch)	1"-12 ～ #10-32	5/16-24 ～ 7/16-20	1/2-20 ～ #10-32	1/2-20 ～ #10-32	3/8-24	1/4 ～ 10	1/2" ～ No. 10	-	1/4 ～ 10	1/2 ～ #10-24	1/2 ～ #8-36
Shape	-	-	Standard	-	Standard	-	Slotted	-	-	-	-
Sales Unit	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.) / 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.)

Configure

Specification/Dimensions

Screw Dia. M (after insertion)(mm)
1

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

33

36

39

42
Drawing

Clear

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

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"1/4-7

1/2

1/2"

1/2-20

1/2-13

1/4

1/4"

1/4-28

1/4-20

2

#2-56

3/4

3/4-16

3/4-10

3/8

3/8"

3/8-24

3/8-16

4

#4-48

#4-40

#5-40

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"

7/16-20

7/16-14

8

No. 8

#8-36

#8-32

9/16-18

10

No. 10

#10-32

#10-24
Clear

Shape
- Slotted
- Small O.D. Slotted Type
- 3-Hole Type
- Small O.D. 3-Hole Type
- With Pin Type
- Tip Free Type
- Standard
Images

Clear

Sales Unit
- Low Quantity (Available beginning with 1 pc.)
- Box, Pkg.
Clear

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- SUNCO (4)
- ACCURATE (2)
- RECOIL (2)
- KKV (1)
- NIPPON SPREW (1)
- TSUGAMI (1)
- JAPAN DRIVEIT (0)
- HIROSUGI SEIKI (0)
- KS SANGYO (0)
- SEL JAPAN (0)
- ESCO (0)
- TOKAI METAL INDUSTRY (0)
- BOHSEI (0)
- HIROSUGI-KEIKI (0)
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Insert（Screw Type：Unified (Fine) Thread）

Search by specifying the lower class category

Configure

Specification/Dimensions

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

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