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Domed (Acorn) Nuts（Thread Type：Metric, Coarse）

Category page for Cap Nuts. For MISUMI, you can select from nominal, type of material and type of surface processing. A range of products are handled, from regular metric thread types through imperial thread types.
In addition to general cap nuts, there are also serrated types, disc spring types, and friction types for preventing screws from loosening.
[Cap Nuts]
Cap nuts are hexagonal nuts closed on one side, so the threaded hole does not extend the whole length. This prevents bolts from sticking out, giving a beautiful appearance and preventing issues caused by snagging on protruding bolts.
These are sometimes called "cosmetic nuts" because they improve appearance and enhance safety. However, since one end of the nut part is blocked, one must consider the length of the thread relative to the bolt length to be used.

22 items

: 30; 45; 60

Days to Ship	All Same day 4 Day(s) or Less 5 Day(s) or Less 7 Day(s) or Less 8 Day(s) or Less 13 Day(s) or Less 16 Day(s) or Less

[Clean & Pack] Domed (Acorn) Nut

MISUMI

Three types of cleaning methods are available: degreasing, precision cleaning, and electrolytic polishing + precision cleaning. They can be ordered from one piece with the standard part number.
This eliminates the need for customer cleaning or outsourced cleaning, reducing the amount of time and effort required.

■Part Number for Clean & Pack Products

·Degreasing (Anti-rust single packing)	: Part Number SL-□□
·Precision cleaning (Degassing double packing)	: Part Number SH-□□
·Electrolytic polishing + precision cleaning (Degassing double packing)	: Part Number SHD-□□

Product Part Number	Cleaning Method	Packaging Type	Effects Compared to Uncleaned Product	Environment (Standard)	Process
SL-□□	Degreasing	Anti-rust packing	Oil removal	General environment	Regular assembly process
					Post battery assembly process
SH-□□	Precision cleaning	Degassing double packing	Oil removal Dust removal	Clean environment (Class 10 to 1,000)	Battery assembly process
					LCD-related post assembly process
					In-vehicle camera assembly process
SHD-□□	Electrolytic polishing + precision cleaning	Degassing double packing	Oil removal Dust removal Outgas reduction	Vacuum environment Clean environment (Class 10 to 1,000)	Pre-semiconductor process
					Liquid crystal deposition process
					Pre-OLED process

■Notes
Cleaning also removes rust prevention oil, which may make the product more susceptible to rusting than an uncleaned product.
Please be careful about the application location and storage environment.

Volume Discount

Standard Price:	SGD 3.05-
Days to Ship:	8 Day(s) or more

Domed (Acorn) Nuts

MISUMI

Sizes are M3 to M24. Shipment from 1 pc. is available as needed.

Volume Discount

CAD ：: 2D / 3D

Standard Price:	SGD 0.48-
Days to Ship:	Same day or more

Cap Nut

Cap Nut【1-5,000 Pieces Per Package】

SUNCO

[Material] Steel S45C SWCH equivalent stainless steel SUS304 equivalent SUS316 SUS316L Titanium brass
[Surface treatment] None trivalent chromate bright chromate plating zinc plating chrome plating nickel plating chrome plating parker coating silver, copper, tin plated

Volume Discount

CAD ：: 2D / 3D

Standard Price:	SGD 0.13-
Days to Ship:	Same day or more

Hex Weld Acorn Nut (Welded Nut) with Pilot

Hex Weld Acorn Nut (Welded Nut) with Pilot【200-1,000 Pieces Per Package】

TSUKUMO

Cap nut for welding. Includes a positioning guide (pilot) in the center.

CAD ：: 2D / 3D

Standard Price:	SGD 175.81-
Days to Ship:	4 Day(s) or more

Cap Nut (Former JIS)

Cap Nut (Former JIS)【2,000 Pieces Per Package】

TSUKUMO

[Nominal designation of screw thread (M)] 4
[Material] SWCH equivalent screw thread
[Type] Metric coarse application / function standard
[Sales unit] Boxes/pack
[Surface treatment] None bright chromate plating
[Surface treatment] (details) none bright chromate plating

CAD ：: 2D / 3D

Standard Price:	SGD 146.51-
Days to Ship:	4 Day(s) or more

Stable Cap Nut Metric Coarse

Stable Cap Nut Metric Coarse【1-1,000 Pieces Per Package】

SOHWA SEISAKUSHO

[Materials] SWCH equivalent, SUS304 equivalent.
[Surface treatment] None, bright chromate plating chromate plating.

CAD ：: 2D / 3D

Standard Price:	SGD 1.83-
Days to Ship:	4 Day(s) or more

Small Acorn Nut

Small Acorn Nut【1-700 Pieces Per Package】

TSUKUMO

A cap nut that has a smaller dihedral width (spanner size) than the standard width.

CAD ：: 2D / 3D

Standard Price:	SGD 1.06-
Days to Ship:	4 Day(s) or more

Eye Cap Nut

Eye Cap Nut【300 Pieces Per Package】

SAKAMURA

[Nominal designation of screw thread (M)] 8
[Material] SWCH equivalent
[Surface treatment] Trivalent chromate screw thread
[Type] Metric coarse application / function standard
[Sales unit] Boxes/pack
[Surface treatment] (details) trivalent white
[Pitch] 1.25

CAD ：: 2D / 3D

Standard Price:	SGD 79.11
Days to Ship:	4 Day(s) or more

Flanged Cap Nut (Serrated)

Flanged Cap Nut (Serrated)【1-2,000 Pieces Per Package】

SUNCO

A cap nut with flange that eliminates the hassle required to assemble the washer. Serrate (key for preventing loosening) included on the rear side of the flange.

CAD ：: 2D / 3D

Standard Price:	SGD 0.26-
Days to Ship:	4 Day(s) or more

Terminal Cap Nut

Terminal Cap Nut【200-500 Pieces Per Package】

SUNCO

A cap nut with a disc spring attachment that eliminates the hassle of assembling the disc spring washer (spring washer).

CAD ：: 2D / 3D

Standard Price:	SGD 203.58-
Days to Ship:	4 Day(s) or more

U Nut with Cap

U Nut with Cap【1-3,000 Pieces Per Package】

FUJI SEIMITSU

Screw thread
[Type] Metric coarse application / function prevents loosening prevents loosening details U nut
[Nominal designation of screw thread (M)] 5 6 8 10 12 14 16 20 24
[Material] Steel stainless steel
[Sales unit] Individual (can be purchased as a single unit) boxes, packs
[Surface treatment] (details) none trivalent chromate trivalent black trivalent white bright chromate plating chromate plating chromate plating bright chromate
[Pitch (mm)] 0.8 1 1.25 1.5 1.75 2 2.5 3

Standard Price:	SGD 0.86-
Days to Ship:	4 Day(s) or more

Cap nut (stainless steel)

Cap nut (stainless steel)【6-40 Pieces Per Package】

TRUSCO NAKAYAMA

Features
· Because the screw hole does not have a through-hole, therefore there will be cosmetic effects since it will protrude out from the machinery outer surface.

Standard Price:	SGD 12.24
Days to Ship:	Same day or more

Wedge Nut with CAP

SUNCO

[Material] Equivalent to SUS304
[Surface Processing] None
[Nominal of Thread (M)] 4/5/6/8/10/12
[Application/Function] Loosening prevention
[Thread Ridge Type] Metric Coarse
[Loosening Prevention Details] Wedge Nut

Standard Price:	SGD 0.82-
Days to Ship:	4 Day(s) or more

E-LOCK (Hex Nut Type with Cap)

E-LOCK (Hex Nut Type with Cap)【250-1,000 Pieces Per Package】

SUNCO

[Material] Steel/SUS304 equivalent
[Surface Processing] None / Trivalent White
[Nominal of Thread (M)] 4/5/6/8/10/12/16/20
[Application/Function] Loosening prevention
[Thread Ridge Type] Metric Coarse
[Sales Unit] Box/Package
[Loosening Prevention Details] Friction Nut

Standard Price:	SGD 211.40-
Days to Ship:	7 Day(s) or more

Flanged Acorn Nut with no Serrations

Flanged Acorn Nut with no Serrations【1-2,000 Pieces Per Package】

TSUKUMO

A cap nut with flange that eliminates the hassle required to assemble the washer. Does not come with serrate to prevent loosening.

CAD ：: 2D / 3D

Standard Price:	SGD 0.26-
Days to Ship:	4 Day(s) or more

Cutting Brass (Low-Cadmium), Cap Nut (Shape 1, Class 1) (Cutting)

Cutting Brass (Low-Cadmium), Cap Nut (Shape 1, Class 1) (Cutting)【1-500 Pieces Per Package】

SUNCO

A cap nut (the cap part has been formed using cutting not welding) with one size (cosmetic nut, cap nut). There is one type of hex nut par.

CAD ：: 2D / 3D

Standard Price:	SGD 0.43-
Days to Ship:	4 Day(s) or more

Iron / Stainless Steel Stable Cap Nut

Iron / Stainless Steel Stable Cap Nut【1-1,000 Pieces Per Package】

SOHWA SEISAKUSHO

Suitable for the fastening of soft or fragile materials. Capable of performing an intermediate lock. Does not require a spring lock washer, either.

Standard Price:	SGD 1.83-
Days to Ship:	4 Day(s) or more

Insert Cap Nut

Insert Cap Nut【1,000 Pieces Per Package】

TSUKUMO

[Material] Steel
[Surface treatment] Bright chromate plating screw thread
[Type metric coarse
[Sales unit] Boxes/pack
[Surface treatment] (details) bright chromate plating
[Nominal designation of screw thread (M)] 5 6 8 10
[Height (mm)] 9.5 10.5 13 15.5 S dimensions 8 10 12 14 dc 12 13 17 19 t 0.4 0.5 0.6

Standard Price:	SGD 266.88
Days to Ship:	4 Day(s) or more

U Nut with Cap, Fine

FUJI SEIMITSU

A nut that exhibits a stable locking function.
[Features]
·Prevents early disengagement even when the axial force is reduced.
·All-metal product with excellent heat and cold resistance.
·Easy to tighten and prevents mounting errors.
·Reusable.
[Applications]
·Ideal for steel structures such as railroads and connecting bridges, cars, motorcycles, and industrial machinery.

Standard Price:	SGD 1.43
Days to Ship:	4 Day(s) or more

Cap nut (trivalent chromate)

Cap nut (trivalent chromate)【5-37 Pieces Per Package】

TRUSCO NAKAYAMA

Feature
· Low environmental impact trivalent chromate product.

Standard Price:	SGD 11.40
Days to Ship:	4 Day(s) or more

Insertion Bag Nut

SUNCO

[Material] Steel
[Surface Processing] Trivalent White
[Nominal of Thread (M)] 5
[Application/Function] Standard
[Thread Ridge Type] Metric Coarse

Standard Price:	SGD 0.41
Days to Ship:	7 Day(s) or more

E-LOCK (Flange Nut Type with Cap)

E-LOCK (Flange Nut Type with Cap)【1-800 Pieces Per Package】

SUNCO

[Material] Steel/SUS304 equivalent
[Surface Processing] None / Trivalent White
[Nominal of Thread (M)] 4/5/6/8/10/12
[Application/Function] Loosening prevention
[Thread Ridge Type] Metric Coarse
[Sales Unit] Box/Package, Individual (can be purchased from one piece)
[Loosening Prevention Details] Friction Nut

Standard Price:	SGD 4.69-
Days to Ship:	7 Day(s) or more


Brand
Product Series
CAD
Days to Ship
Nominal of Thread (M)
Material
Surface Treatment
Thread Type
Applications, Functions
Sales Unit
Nominal of Thread (inch)
Surface Treatment (Details)
Hex Nut Type
Locking Details


Brand	MISUMI	MISUMI	SUNCO	TSUKUMO	TSUKUMO	SOHWA SEISAKUSHO	TSUKUMO	SAKAMURA	SUNCO	SUNCO	FUJI SEIMITSU	TRUSCO NAKAYAMA	SUNCO	SUNCO	TSUKUMO	SUNCO	SOHWA SEISAKUSHO	TSUKUMO	FUJI SEIMITSU	TRUSCO NAKAYAMA	SUNCO	SUNCO
Product Series	[Clean & Pack] Domed (Acorn) Nut	Domed (Acorn) Nuts	Cap Nut【1-5,000 Pieces Per Package】	Hex Weld Acorn Nut (Welded Nut) with Pilot【200-1,000 Pieces Per Package】	Cap Nut (Former JIS)【2,000 Pieces Per Package】	Stable Cap Nut Metric Coarse【1-1,000 Pieces Per Package】	Small Acorn Nut【1-700 Pieces Per Package】	Eye Cap Nut【300 Pieces Per Package】	Flanged Cap Nut (Serrated)【1-2,000 Pieces Per Package】	Terminal Cap Nut【200-500 Pieces Per Package】	U Nut with Cap【1-3,000 Pieces Per Package】	Cap nut (stainless steel)【6-40 Pieces Per Package】	Wedge Nut with CAP	E-LOCK (Hex Nut Type with Cap)【250-1,000 Pieces Per Package】	Flanged Acorn Nut with no Serrations【1-2,000 Pieces Per Package】	Cutting Brass (Low-Cadmium), Cap Nut (Shape 1, Class 1) (Cutting)【1-500 Pieces Per Package】	Iron / Stainless Steel Stable Cap Nut【1-1,000 Pieces Per Package】	Insert Cap Nut【1,000 Pieces Per Package】	U Nut with Cap, Fine	Cap nut (trivalent chromate)【5-37 Pieces Per Package】	Insertion Bag Nut	E-LOCK (Flange Nut Type with Cap)【1-800 Pieces Per Package】
CAD		2D / 3D	2D / 3D	2D / 3D	2D / 3D	2D / 3D	2D / 3D	2D / 3D	2D / 3D	2D / 3D					2D / 3D	2D / 3D
Days to Ship	8 Day(s) or more	Same day or more	Same day 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	4 Day(s) or more	4 Day(s) or more	Same day or more	4 Day(s) or more	7 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	7 Day(s) or more	7 Day(s) or more
Nominal of Thread (M)	3 ～ 20	3 ～ 24	3 ～ 48	4 ～ 12	4	4 ～ 12	8 ～ 12	8	4 ～ 8	6 ～ 8	5 ～ 24	3 ～ 12	4 ～ 12	4 ～ 10	4 ～ 8	3 ～ 12	4 ～ 12	6	10	3 ～ 12	5	4 ～ 10
Material	Steel	Stainless Steel	Brass ～ Titanium	Steel	Steel	Stainless Steel ～ Steel	Stainless Steel ～ Steel	Steel	Stainless Steel ～ Steel	Steel	Stainless Steel ～ Steel	Stainless Steel	Stainless Steel	Stainless Steel ～ Steel	Stainless Steel ～ Steel	Brass	Stainless Steel ～ Steel	Steel	Steel	Stainless Steel	Steel	Stainless Steel ～ Steel
Surface Treatment	-	Not Provided	Trivalent Chromate / Bright Chrome Plating / Zinc Plating / Chromate Plating / Nickel Plating / Chrome Plating / Parkerizing / Painting, Coating / Silver/Copper/Tin Plating	Not Provided	Not Provided / Bright Chrome Plating	Not Provided / Bright Chrome Plating / Chromate Plating	Not Provided / Trivalent Chromate / Bright Chrome Plating / Chromate Plating / Nickel Plating / Chrome Plating / Painting, Coating / Silver/Copper/Tin Plating	Trivalent Chromate	Not Provided / Trivalent Chromate / Bright Chrome Plating / Chromate Plating / Nickel Plating / Chrome Plating / Painting, Coating / Silver/Copper/Tin Plating	Trivalent Chromate	-	Not Provided	Not Provided	Trivalent Chromate	Not Provided / Trivalent Chromate / Bright Chrome Plating / Chromate Plating / Nickel Plating / Chrome Plating / Painting, Coating / Silver/Copper/Tin Plating	Nickel Plating	Not Provided / Bright Chrome Plating / Chromate Plating	Bright Chrome Plating	-	Trivalent Chromate	Trivalent Chromate	Trivalent Chromate
Thread Type	Metric, Coarse	Metric, Coarse	Metric, Coarse	Metric, Coarse	Metric, Coarse	Metric, Coarse	Metric, Coarse	Metric, Coarse	Metric, Coarse	Metric, Coarse	Metric, Coarse	Metric, Coarse	Metric, Coarse	Metric, Coarse	Metric, Coarse	Metric, Coarse	Metric, Coarse	Metric, Coarse	Metric, Coarse	Metric, Coarse	Metric, Coarse	Metric, Coarse
Applications, Functions	Standard / m / n	Standard	Standard	For Welding	Standard	Lock	Standard	Standard	Standard	Standard	Lock	Standard	Lock	Lock	Standard	Standard	Lock	-	Lock	Standard	Standard	Lock
Sales Unit	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.) ～ Box, Pkg.	Box, Pkg.	Low Quantity (Available beginning with 1 pc.) ～ Box, Pkg.	Box, Pkg.	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.) ～ Box, Pkg.	Low Quantity (Available beginning with 1 pc.) ～ Box, Pkg.	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.) ～ Box, Pkg.
Nominal of Thread (inch)	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Surface Treatment (Details)	-	Not Provided	Black Paint ～ Trivalent Chromate	Not Provided	Bright Chrome Plating ～ Not Provided	Bright Chrome Plating ～ Not Provided	Black Paint ～ Trivalent Chromate	Trivalent Chromate	Black Paint ～ Trivalent Chromate	Trivalent Chromate	Chromate Plating ～ Trivalent Chromate	Not Provided	Not Provided	Trivalent Chromate	Black Paint ～ Trivalent Chromate	Nickel Plating	Bright Chrome Plating ～ Not Provided	Bright Chrome Plating	Chromate Plating	Trivalent Chromate	Trivalent Chromate	Trivalent Chromate
Hex Nut Type	-	-	Class 2	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Locking Details	-	-	-	-	-	Friction Nut	-	-	-	-	U Nut	-	Wedge nut	Friction Nut	-	-	Friction Nut	-	U Nut	-	-	Friction Nut

Configure

Specification/Dimensions

Nominal of Thread (M)
3

4

5

6

8

10

12

14

16

18

20

22

24

27

30

33

36

42

48
Clear

Material
Brass

Stainless Steel

Steel

Titanium
Clear

Surface Treatment
- Not Provided
- Trivalent Chromate
- Bright Chrome Plating
- Zinc Plating
- Chromate Plating
- Nickel Plating
- Chrome Plating
- Parkerizing
- Painting, Coating
- Silver/Copper/Tin Plating
Clear

Thread Type
- Metric, Coarse
- Metric, Coarse (Left)
- Metric, Fine
- Unified, Coarse (UNC)
- Whit, Coarse
Clear

Applications, Functions
- Standard
- Lock
- For Welding
Clear

Sales Unit
Low Quantity (Available beginning with 1 pc.)

Box, Pkg.
Clear

Nominal of Thread (inch)
1

1/2

1/4

3/4

3/8

3/16

5/8

5/16

No. 6

7/8

No. 8

No. 10
Clear

Surface Treatment (Details)
Black Paint

Bright Chrome Plating

Chromate Plating

Chrome Plating

Copper Plating

Hot Zinc Plating

Nickel Plating

Not Provided

Parkerizing

Trivalent Chromate
Clear

Hex Nut Type
Class 2
Clear

Locking Details
- U Nut
- Friction Nut
- Wedge nut
Clear

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Domed (Acorn) Nuts（Thread Type：Metric, Coarse）

Configure

Specification/Dimensions

Nominal of Thread (M)

Material

Surface Treatment

Thread Type

Applications, Functions

Sales Unit

Nominal of Thread (inch)

Surface Treatment (Details)

Hex Nut Type

Locking Details

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