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Discontinued Products

Scheduled Maintenance Notice: This site will be unavailable due to scheduled maintenance from 9:00 23/2 to 7:00 (SGT) 24/2/2025. We apologize for the inconvenience.
Notice of End of Sales for Economy Series Pneumatic Equipment Category. More information.

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Washers（Type：Flat Washer Page2）

Metal Washers
We have a lineup of nearly all washers circulating in the market, including square or wavy types, as well as flat (round) washers and spring washers.
They are mainly available in small boxes and packs, but we sell many items individually. For customers who are price sensitive, purchasing in small boxes is recommended.
Contact us if you cannot find the desired size.
[Materials]
Iron (steel SCM), stainless steel (SUS304, SUS410, SUS316L), titanium, brass, and many others
[Surface Processing]
None, ferrosoferric oxide coating, electroless nickel plating, trivalent chromate, trivalent black, trivalent white, unichrome plating, chromate plating, chrome plating, nickel plating, anodized, polished, painted, and others
[Nominal Screw Diameter] M (mm), imperial (inch), others
[Thickness] 0.1 to 30 mm

53 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

BUMAX10.9　Washer

BUMAX

Has a same strength class equivalent to that of iron although it is a stainless steel product. Four and two times as durable as SUS304 and SUS316, respectively.

Standard Price:	SGD 1.84-
Days to Ship:	3 Day(s) or more

S45C Round Washer 22H

S45C Round Washer 22H【1-800 Pieces Per Package】

SUNCO

[Type (Application)] Plain Washer
[Type] Plain Washer
[Materials] Steel
[Materials]Steel S45C
[Surface Treatment] None, Trivalent Chromate, Uni-Chromate Plating, Zinc Plating, Chromate Plating
[Inner Diameter d (mm)] 8 10 13 15 17 19 21 23 25 28 39 66 70
[Nominal Thread (M)] 8 10 13 15 17 19 21 23 25 28 39 66 70
[Thickness t (mm)] 1.6 2 2.5 3 4 6 9
[Sales Unit] Individual (Available for Purchase as 1pc), Box and Packaging.
[Surface Treatment](Details) None, Trivalent White, Uni-Chromate Plating, Hot-Dip Galvanizing, Chromate Plating, Chromate Plating, Black Chromate
[Outer Diameter (mm)] 17 21 24 28 30 34

Standard Price:	SGD 0.14-
Days to Ship:	3 Day(s) or more

S45C High-Strength Round Washer

SUNCO

[Type (application)] Plain Washer
[Type] Plain Washer
[Materials] Steel
[Surface treatment] None
[Sales unit] Minimum Quantity (Available for Purchase from 1 pc)
[Materials]Steel S45C
[Surface treatment](Details) none
[Inner diameter d (mm)] 10 13 17 21 23 25 28 31
[Nominal Thread (M)] 10 13 17 21 23 25 28 31
[Thickness t (mm)] 3.2 4.5 6 8
[Outer diameter (mm)] 22 26 32 40 44 48 56 60

Standard Price:	SGD 0.20-
Days to Ship:	3 Day(s) or more

On Sale Till 31/03/2025

S45C High Tension Washer

S45C High Tension Washer【1-1,500 Pieces Per Package】

SUNCO

[Features]
·If the mating material is wood, use a round washer for wood with a large outer diameter to prevent sinking.

Volume Discount

Standard Price:	SGD 0.13-
	Special Price
Days to Ship:	3 Day(s) or more

Fiber Washer, White

SUNCO

For increasing the air-tightness and protecting the member from scratches.

Volume Discount

Standard Price:	SGD 0.05-
Days to Ship:	3 Day(s) or more

ISO Homer (Heading) Type Round Washer

ISO Homer (Heading) Type Round Washer【150-3,500 Pieces Per Package】

SUNCO

[Type (application)] Plain Washer
[Type] Plain Washer
[Materials] Steel
[Sales unit] Box/package
[Materials] Steel SPCC
[Surface treatment]Trivalent chromate, Bright chromate plating, Chromate plating
[Inner diameter d (mm)] 6 8 10 12 16 20 22 24
[Nominal Thread (M)] 6 8 10 12 16 20 22 24
[Thickness t (mm)] 1.6 2 2.5 3 4
[Surface treatment](Details) Trivalent white, Bright chromate plating, Chromate plating
[Outer diameter (mm)] 12.5 17 21 24 30 37 39 44

Standard Price:	SGD 30.77-
Days to Ship:	3 Day(s) or more

JIS Homer (Heading) Type Round Washer

JIS Homer (Heading) Type Round Washer【100-5,000 Pieces Per Package】

SUNCO

[Type (application)] Plain Washer
[Type] Plain Washer
[Materials] Steel
[Sales unit] Box/package
[Materials] Steel SPCC
[Surface treatment] None, trivalent chromate, bright chromate plating, chromate plating, nickel plating
[Inner diameter d (mm)] 6 8 10 12 13.5 16 20 22 24
[Nominal Thread (M)] 6 8 10 12 13 16 20 22 24
[Thickness t (mm)] 1 1.6 2.3 2.6 3.2 4
[Surface treatment](Details) None, Trivalent white, Bright chromate plating, Chromate plating, Green chromate, Black chromate, Nickel plating
[Outer diameter (mm)] 13 18 22 26 32 40 44 48

Standard Price:	SGD 35.63-
Days to Ship:	3 Day(s) or more

High-Tension Homer (Heading) Type Round Washer

High-Tension Homer (Heading) Type Round Washer【50-300 Pieces Per Package】

SUNCO

[Type (application)] Plain Washer
[Type] Plain Washer
[Materials] Steel
[Materials] Steel SPCC
[Surface treatment] None, bright chromate plating, chromate plating
[Inner diameter d (mm)] 13 17 21 23 25
[Nominal Thread (M)] 12 16 20 22 24
[Thickness t (mm)] 3.2 4.5 6
[Sales unit] Minimum Quantity (Available for Purchase from 1 pc) Box and Pkg.
[Surface treatment](Details) None, bright chromate plating
[Outer diameter (mm)] 26 32 40 44 48

Standard Price:	SGD 43.18-
Days to Ship:	3 Day(s) or more


Brand
Product Series
CAD
Days to Ship
Material
Surface Treatment
Inner Dia. d(mm)
I.D. d(inch)
Nominal of Thread (M)
Outer Diameter D(inch)
Type
Type (Application)
Sales Unit
Thickness t(mm)
Thickness t(inch)
Type Spring Washers
Material: Stainless Steel
Surface Treatment (Detailed)
Nominal of Thread (inch)
Material Steel
Type Toothed Washer

				On Sale Till 31/03/2025
Brand	BUMAX	SUNCO	SUNCO	SUNCO	SUNCO	SUNCO	SUNCO	SUNCO
Product Series	BUMAX10.9　Washer	S45C Round Washer 22H【1-800 Pieces Per Package】	S45C High-Strength Round Washer	S45C High Tension Washer【1-1,500 Pieces Per Package】	Fiber Washer, White	ISO Homer (Heading) Type Round Washer【150-3,500 Pieces Per Package】	JIS Homer (Heading) Type Round Washer【100-5,000 Pieces Per Package】	High-Tension Homer (Heading) Type Round Washer【50-300 Pieces Per Package】
CAD
Days to Ship	3 Day(s) or more	3 Day(s) or more	3 Day(s) or more	3 Day(s) or more	3 Day(s) or more	3 Day(s) or more	3 Day(s) or more	3 Day(s) or more
Material	Stainless Steel	Steel	Steel	Steel	-	Steel	Steel	Steel
Surface Treatment	Not Provided	Trivalent Chromate / Bright Chrome Plating / Zinc Plating / Chromate Plating	-	Trivalent Chromate / Bright Chrome Plating / Zinc Plating / Chromate Plating / Nickel Plating / Dacrotizing	-	Trivalent Chromate / Bright Chrome Plating / Chromate Plating	Trivalent Chromate / Bright Chrome Plating / Chromate Plating / Nickel Plating	Bright Chrome Plating / Chromate Plating
Inner Dia. d(mm)	6.4 ～ 17	8 ～ 70	10 ～ 31	6 ～ 55	2.6 ～ 20	6.4 ～ 23	6.5 ～ 25.5	13 ～ 25
I.D. d(inch)	-	-	-	-	-	-	-	-
Nominal of Thread (M)	6 ～ 16	8 ～ 70	10 ～ 31	6 ～ 55	-	6 ～ 22	6 ～ 24	12 ～ 24
Outer Diameter D(inch)	-	-	-	-	-	-	-	-
Type	Flat Washer	Flat Washer	Flat Washer	Flat Washer	Flat Washer	Flat Washer	Flat Washer	Flat Washer
Type (Application)	Flat Washer	Flat Washer	Flat Washer	Flat Washer	Flat Washer	Flat Washer	Flat Washer	Flat Washer
Sales Unit	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.	Low Quantity (Available beginning with 1 pc.) / Box, Pkg.
Thickness t(mm)	1.6 ～ 2.5	1.6 ～ 9	3.2 ～ 8	2.3 ～ 6	0.5 ～ 2	1.6 ～ 3	1 ～ 4	3.2 ～ 6
Thickness t(inch)	-	-	-	-	-	-	-	-
Type Spring Washers	-	-	-	-	-	-	-	-
Material: Stainless Steel	SUS316L	-	-	-	-	-	-	-
Surface Treatment (Detailed)	Not Provided	Trivalent Chromate / Bright Chrome Plating / Hot Zinc Plating / Chromate Plating	-	Trivalent Chromate / Bright Chrome Plating / Hot Zinc Plating / Chromate Plating / Nickel Plating / Dacrotizing	-	Trivalent Chromate / Bright Chrome Plating / Chromate Plating	Trivalent Chromate / Bright Chrome Plating / Chromate Plating / Nickel Plating	Bright Chrome Plating / Chromate Plating
Nominal of Thread (inch)	-	-	-	-	-	-	-	-
Material Steel	-	S45C	S45C	S45C	-	SPCC	SPCC	SPCC
Type Toothed Washer	-	-	-	-	-	-	-	-

Configure

Specification/Dimensions

Material
- Steel
- Stainless Steel
- Titanium Class 2
- Aluminum
- Brass
- Phosphor Bronze
- Titanium Class 1
- Nickel Base Alloy
Clear

Surface Treatment
- Not Provided
- Black Oxide
- Electroless Nickel Plating
- Trivalent Chromate
- Bright Chrome Plating
- Zinc Plating
- Chromate Plating
- Nickel Plating
- Chrome Plating
- Parkerizing
- Anodize
- Dacrotizing
- Polishing
- Painting, Coating
- Silver/Copper/Tin Plating
- Temper Color
- Passivated
Clear

Inner Dia. d(mm)
0.114

0.125

0.141

0.156

0.167

0.172

0.193

0.203

0.252

0.281

0.314

0.344

0.377

0.391

1.05

1.1

1.3

1.5

1.7

1.75

1.8

2.1

2.2

2.25

2.3

2.35

2.4

2.5

2.6

2.7

2.8

2.9

3

3.1

3.15

3.2

3.3

3.4

3.5

3.55

3.6

3.7

3.8

3.9

4

4.1

4.2

4.25

4.3

4.4

4.5

4.7

4.8

5

5.1

5.2

5.25

5.3

5.36

5.4

5.45

5.5

5.8

6

6.1

6.2

6.3

6.4

6.5

6.6

6.8

7

7.1

7.2

7.4

7.5

7.8

8

8.1

8.2

8.3

8.4

8.5

8.6

8.7

8.8

9

9.1

9.3

9.4

9.6

9.8

10

10.2

10.3

10.5

10.6

10.7

10.8

11

11.2

11.4

11.6

11.8

12

12.2

12.5

12.6

12.7

13

13.2

13.3

13.5

13.8

14

14.2

14.3

14.5

14.6

15

15.2

15.5

15.8

15.9

16

16.2

16.5

16.7

16.9

17

17.5

17.7

17.8

18

18.2

18.3

18.7

18.8

18.9

19

19.5

19.7

19.8

20

20.2

20.7

20.9

21

21.4

21.5

21.7

21.75

22

22.1

22.5

22.9

23

23.2

23.4

23.5

23.75

24

24.5

24.75

25

25.2

25.3

25.4

25.5

26

26.1

26.4

26.6

26.75

27

27.5

27.75

27.9

28

28.2

28.4

28.5

29

29.3

29.75

29.8

30

30.1

30.4

30.5

31

31.2

31.4

31.5

31.9

32

32.5

33

33.5

33.7

33.9

34

34.3

34.4

34.5

35

35.75

35.8

36

36.5

37

37.4

37.5

37.75

38

38.5

39

39.5

39.8

40

40.4

40.5

40.6

41

41.7

42

42.5

43

43.2

44

45

45.8

46

47

47.2

47.3

47.5

48

49

49.6

50

51

51.4

51.5

51.8

52

53

53.6

54

54.3

55

56

57

57.3

58

59.1

61.3

61.9

62

63.1

64.2

65

66

67.1

69

69.5

70

71.1

74

75

75.1

78

79.1

79.3

79.7

83.1

87.5

88.9

95.8

99

108.3

112.4
Drawing

Clear

I.D. d(inch)
0.109

0.141

0.148

0.227

0.291

0.355

0.400

0.416

0.450

0.512

0.573

0.827

0.894

0.952

1.077

1.202

1.327

1.640
Drawing

Clear

Nominal of Thread (M)
0.5

1

1.2

1.4

1.6

1.7

2

2.3

2.5

2.6

3

3.5

4

4.5

5

5.1

6

7

8

8.5

9

10

11

12

13

13.5

14

14.5

15

16

17

18

19

20

21

22

23

24

25

26

27

28

30

31

33

34

36

37

38

39

41

42

43

44

45

45.1

45.2

45.3

46

47

48

50

51

52

54

55

55.1

55.2

55.3

56

60

63

64

65.1

65.2

65.3

65.5

65.6

66

68

70

70.2

72

76

80

80.3

85

85.1

85.2

85.3

85.6

90

93.2

95

98.3

105

105.1

105.2

105.3

110

110.3

110.4

110.5

110.6

115

120

125

125.1

125.2

125.4

125.5

130

130.2

135.2

135.3

135.4

135.5

135.6

140.3

140.4

140.5

145.4

145.5

150.2

150.3

150.6

170.2

170.3

170.4

170.5

170.6

180.4

180.5

180.6

210.3

210.4

210.5

210.6

220.5

230.5

235.5

240.5

240.6

250.3

255.6

260.4

260.5

260.6

285.4

330.6
Clear

Outer Diameter D(inch)
0.25

0.270

0.377

0.645

0.698

0.760

0.776

0.869

0.885

1.260

1.459

1.770

2.020

2.250

2.520

2.770

3.270
Drawing

Clear

Type
- Flat Washer
- Spring Washer
- Toothed Washer (Toothed Lock Washer)
- Rosette Washer
- Tab Washer - One-Tabbed / Two-Tabbed
- Nord-Lock Washer
- Tapered Washer
- Spherical Washer
- Ornamental Washer for Ornamental Screws
- Hooked Washer for Jig
- Split Washer for Jig
- Square Washer
- Flat Washer with Cover
- Seal Washer
- Pawl Washer
- Washer for Corrugated Sheet
- Fall Prevention and loosening Prevention Spring
Images

Clear

Type (Application)
- Flat Washer
- Spring Washer
- Special Shaped Washer
- Washer with Threadlocker Adhesive
- Washer for Fluid
Clear

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

Thickness t(mm)
0.031

0.05

0.059

0.1

0.15

0.2

0.25

0.29

0.3

0.4

0.45

0.5

0.55

0.6

0.7

0.8

0.9

1

1.1

1.2

1.25

1.3

1.4

1.5

1.6

1.75

1.8

1.9

2

2.1

2.2

2.3

2.4

2.5

2.6

2.7

2.8

2.85

3

3.2

3.3

3.4

3.45

3.5

3.55

3.6

3.7

3.8

3.9

4

4.1

4.2

4.3

4.5

4.6

4.7

4.8

5

5.1

5.2

5.3

5.4

5.5

5.6

5.8

5.9

6

6.2

6.3

6.4

6.6

6.8

7

7.1

7.2

7.5

7.9

8

8.2

8.3

8.7

9

9.1

9.3

9.5

10

11

11.1

11.2

12

14

15

16

17

18

21

22

23

27

30

32

45
Drawing

Clear

Thickness t(inch)
0.031

0.042

0.044

0.045

0.055

0.056

0.067

0.073

0.088

0.109

0.115

0.125

0.135

0.219
Drawing

Clear

Type Spring Washers
- Standard
- Disc Spring
- Wave
- Serrated Conical Disc Spring
- Bent
Details

Clear

Material: Stainless Steel
254SMO

SUS302

SUS303

SUS304

SUS310S

SUS316

SUS316L

SUS329J4L

Stainless Steel
Clear

Surface Treatment (Detailed)
- Not Provided
- Black Oxide
- Electroless Nickel Plating
- Trivalent Chromate
- Bright Chrome Plating
- Hot Zinc Plating
- Chromate Plating
- Nickel Plating
- Black Nickel Plating
- Chrome Plating
- Parkerizing
- Black Anodize
- Dacrotizing
- Barrel, Passivated
- Special Chemical Grinding
- GeoMet Coating
- Baked Paint
- Seizure-Against Coating
- Copper Plating
- Tin Plating
- Lafre
- Black Paint
- Temper Color
- Passivated
Clear

Nominal of Thread (inch)
1

1 1/2

1 1/4

1 1/8

1/2

1 3/8

1/4

2

No. 2

3/4

3/8

No. 4

5/8

5/16

No. 6

7/8

7/16

No. 8

9/16

No. 10

No. 12
Clear

Material Steel
SUM22L

S25C

S45C

S50C

S55C

S60C

S65C

SS400

Carbon Steel

SCM Steel

SPCC

SPHC

SWRH

Spring Steel
Clear

Type Toothed Washer
- Internal Teeth Type
- External Teeth Type
- Star
- Internal External Teeth Type
Images

Clear

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Washers（Type：Flat Washer Page2）

Configure

Specification/Dimensions

Material

Surface Treatment

Inner Dia. d(mm)

I.D. d(inch)

Nominal of Thread (M)

Outer Diameter D(inch)

Type

Type (Application)

Sales Unit

Thickness t(mm)

Thickness t(inch)

Type Spring Washers

Material: Stainless Steel

Surface Treatment (Detailed)

Nominal of Thread (inch)

Material Steel

Type Toothed Washer

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CAD

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