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Tension Springs Medium Light / Medium Load【1-100 Pieces Per Package】 (Part Numbers)

Volume Discount

MiSUMi Economy

- Tension Springs Medium Light / Medium Load from MISUMI.
- This is an economy item; The price is cheaper than the MISUMI standard product.
- The wire material of spring can be selected 2 type SUS304WP-B or SWP-A.
- C－AWU and C－AUU are medium and light load Tension springs.
- C－AWS and C－AUS are medium load Tension springs.
- The outer diameter of spring can be selected from 3.0 mm to 10.0 mm.
- The free length of spring can be selected from 10 mm to 60 mm.
- Tension Springs Heavy Load from MISUMI.

RoHS

Part Number

Configured Part Number is shown.

Drawing/Specifications
3D Preview
Part Numbers

Dimensional Drawing

Shape	Type	Material
Medium and Light Load	C-AWU	Spring Steel
	C-AUU	SUS304-WPB
	C-BUU	SUS304-WPB
	C-BWU	Spring Steel
Medium Load	C-AWS	Spring Steel
	C-AUS	SUS304-WPB
	C-BUSS	SUS304-WPB
	C-BWS	Spring Steel
Medium and Heavy Load	C-AWF	Spring Steel

L = Free length D ≤ ⌀18 mm (±1.0)
D ≥ ⌀18 mm (±1.5)

Specification Overview

■ Medium and Light Load

Type	Coil Outer Diameter D — Free Length L		Wire Diameter d mm	Under Dynamic Load		(Initial Tension) N	(Spring Constant) N/mm
Type	Coil Outer Diameter D — Free Length L		Wire Diameter d mm	Maximum Displacement Fmax. Mm	Maximum Load N	(Initial Tension) N	(Spring Constant) N/mm
C-AWU (Spring Steel) C-AUU (SUS304-WPB) C-BUU (SUS304-WPB) C-BWU (Spring Steel)	2—	10	0.28	4	2.45	0.49	0.49
		15	0.28	6.7	2.45	0.49	0.29
		20	0.28	10	2.45	0.49	0.20
	3—	10	0.35	4.6	3.33	0.66	0.59
		15		9.1			0.29
		25		19.5			0.14
	4—	15	0.5	6.5	4.81	0.98	0.51
		20		12.2			0.31
		25		16.9			0.23
		30		21.7			0.18
		40		30			0.13
	5-	15	0.6	5.7	6.37	1.37	0.89
		20		9.8			0.51
		25		14.2			0.35
		30		18.9			0.26
		35		28.3			0.18
		40		36.4			0.14
	6-	20	0.7	9.6	12.94	1.67	1.18
		25		14.4			0.78
		30		20.2			0.56
		35		28.8			0.39
		40		30.3			0.37
		45		34.8			0.32
		50		41.1			0.27
		60		50			0.23
	8-	25	0.9	10	18.63	3.92	1.47
		30		14.3			1.03
		35*		18.8			0.78
		40		23.8			0.62
		-45		28.3			0.52
		50		32.6			0.45
		55		37.5			0.39
		60		41.7			0.35
		70		50			0.29
	10-	35	1.1	14	23.24	4.71	1.32
		60		35.7			0.52
		70		43			0.43
		75		47.3			0.39
		90		59			0.31
	12-	35	1.4	11.7	47.7	10.49	3.14
		65		37.3			0.98
		70		41.4			0.88
		100		65.4			0.56
	14-	100	1.6	61.3	58.84	13.73	0.74
	18-	150	2.0	100	81.39	17.65	0.64

Load {kgf} = Load N × 0.101972

Length dimensions in ( ) are only applicable to C-AWU model.

Length dimensions marked with * are only applicable to C-AUU model.

For detailed sales models, please refer to the MISUMI official website.

■ Medium Load

Type	Coil Outer Diameter D — Free Length L		Wire Diameter d mm	Under Dynamic Load		(Initial Tension) N	(Spring Constant) N/mm
Type	Coil Outer Diameter D — Free Length L		Wire Diameter d mm	Maximum Displacement Fmax. Mm	Maximum Load N	(Initial Tension) N	(Spring Constant) N/mm
C-AWS (Spring Steel) C-AUS (SUS304-WPB) C-BUSS (SUS304-WPB) C-BWS (Spring Steel)	3—	10	0.4	3.5	4.41	0.88	0.98
		15		6			0.59
		20		9			0.39
	4—	15	0.5	6.5	6.37	1.18	0.78
		20		10.2			0.49
		25		13.9			0.39
		30		17.5			0.29
		35		20.3			0.26
		40		24			0.22
	5-	15	0.6	5.6	8.53	1.57	1.27
		20		8.9			0.78
		25		13.7			0.49
		30		17.3			0.39
		35		23.7			0.29
		40		24.5			0.28
		50		32.2			0.22
	6-	20	0.8	6.7	17.26	3.53	2.06
		25		9.3			1.47
		30		12.7			1.08
		35		15.6			0.88
		40		18.7			0.69
		45		20.6			0.68
		50		24.5			0.57
		55		28			0.5
	8-	25	1	9.1	24.52	4.9	2.16
		30		12.5			1.57
		35		15.4			1.27
		40		19.2			0.98
		45		22.2			0.88
		50		25			0.78
		55		28.6			0.7
		60		33.3			0.6
		65		36.3			0.55
		70		40			0.50
	10-	30	1.2	10.4	30.99	5.49	2.45
		35		13.7			1.86
		40		17.3			1.47
		45		20			1.27
		50		24.8			0.98
		60		31.6			0.78
		75		43.3			0.60
	12-	40	1.6	11.8	62.76	14.71	4.12
		45		14.3			3.33
		55		19.3			2.45
		60		22.3			2.16
		100		41.0			1.20
	14-	40	1.8	10.2	74.53	16.67	5.69
	16-	55	2.1	17.4	86.3	19.61	3.82

■ Medium and Heavy Load

Type	Coil Outer Diameter D — Free Length L		Wire Diameter d mm	Under Dynamic Load		(Initial Tension) N	(Spring Constant) N/mm
Type	Coil Outer Diameter D — Free Length L		Wire Diameter d mm	Maximum Displacement Fmax. Mm	Maximum Load N	(Initial Tension) N	(Spring Constant) N/mm
C-AWF (Spring Steel)	3—	10	0.45	2.2	6.47	1.57	2.26
		15		4.5			1.08
		20		6.7			0.74
	4—	15	0.55	4.5	8.43	1.86	1.47
		20		7.1			0.93
		25		10			0.66
		35		15.2			0.43
	5-	15	0.7	3.9	14.71	2.45	3.14
		20		6.9			1.77
		25		9.6			1.28
		30		12.5			0.98
		35		15.6			0.78
		40		19.2			0.64
	6-	20	0.9	3.9	23.54	5.88	4.51
		25		6			2.94
		30		7.8			2.26
		35		10			1.77
		40		12			1.47
		50		16.4			1.08
	8-	25	1.1	5.8	31.38	6.86	4.23
		30		8.3			2.94
		35		10.9			2.26
		40		13.2			1.86
		45		15.6			1.57
	10-	30	1.4	6.5	49.03	12.75	5.58
		35		8.7			4.17
		40		10.7			3.39
		45		12.9			2.81
		50		15.2			2.39
		70		23.1			1.57
		80		27.4			1.32
	12-	60	1.8	14.5	83.36	23.54	4.13
	12-	70	1.8	17.8	83.36	23.54	3.36

Part Number

CAD Data download and 3D preview are not available because the part number has not yet been determined.

*In order to open the CAD Data download and 3D preview screen, the part number must be fixed.
Please confirm the part number from "Specification / Dimension"on the left side, and then perform the CAD Data Download / 3D Preview operation.

CAD Download

: 30; 60; 90

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Part Number
C-AWU10-60
C-AWU10-60-PACK
C-AWU10-75
C-AWU10-75-PACK
C-AWU10-90
C-AWU10-90-PACK
C-AWU14-100
C-AWU14-100-PACK
C-AWU18-150
C-AWU18-150-PACK
C-BUSS6-35
C-BUSS6-35-PACK
C-BUSS8-60
C-BUSS8-60-PACK
C-BUSS12-45
C-BUSS12-45-PACK
C-BUU6-30
C-BUU6-30-PACK
C-BUU6-35
C-BUU6-35-PACK
C-BUU8-40
C-BUU8-40-PACK
C-BUU8-55
C-BUU8-55-PACK
C-BUU12-100
C-BUU12-100-PACK
C-BWS5-20
C-BWS5-20-PACK
C-BWS6-20
C-BWS6-20-PACK
C-BWS6-30
C-BWS6-30-PACK
C-BWS6-35
C-BWS6-35-PACK
C-BWS10-50
C-BWS10-50-PACK
C-BWU4-20
C-BWU4-20-PACK
C-BWU8-35
C-BWU8-35-PACK

Standard Unit Price	Number of pc(s). included in pkg.	Minimum order quantity	Volume Discount	Days to Ship	Free Length L (mm)	Outer Dia. D (Ø)	Allowable Load (Configurable Range) (N)	Wire Dia. (Ø)	Material	Length of Spring Used L+F (mm)	Hook Opposing Angle	Standard Spring Constant (N/mm)	Max. Load (N)	Initial Tension (N)	Max. Displacement (mm)	Sales packaging
MYR 1.02		1 Piece(s)	Available	1 Day(s) or more	60	10	15.01~30.00	1.1	[Steel Wire] Spring steel	95.7	[180° (Standard)] 180° (Standard)	0.52	23.24	4.71	35.7	-
MYR 96.44	100 Pieces Per Package	1 Pack(s)	Available	2 Day(s) or more	60	10	15.01~30.00	1.1	[Steel Wire] Spring steel	95.7	[180° (Standard)] 180° (Standard)	0.52	23.24	4.71	35.7	Bagged
MYR 4.59		100 Piece(s)		10 Day(s) or more	75	10	15.01~30.00	1.1	[Steel Wire] Spring steel	122.3	[180° (Standard)] 180° (Standard)	0.39	23.24	4.71	47.3	-
MYR 436.11	100 Pieces Per Package	1 Pack(s)	Available	13 Day(s) or more	75	10	15.01~30.00	1.1	[Steel Wire] Spring steel	122.3	[180° (Standard)] 180° (Standard)	0.39	23.24	4.71	47.3	Bagged
MYR 6.37		100 Piece(s)		10 Day(s) or more	90	10	15.01~30.00	1.1	[Steel Wire] Spring steel	149	[180° (Standard)] 180° (Standard)	0.31	23.24	4.71	59	-
MYR 605.52	100 Pieces Per Package	1 Pack(s)	Available	13 Day(s) or more	90	10	15.01~30.00	1.1	[Steel Wire] Spring steel	149	[180° (Standard)] 180° (Standard)	0.31	23.24	4.71	59	Bagged
MYR 6.49		100 Piece(s)		10 Day(s) or more	100	14	30.01~60.00	1.6	[Steel Wire] Spring steel	161.3	[180° (Standard)] 180° (Standard)	0.74	58.84	13.73	61.3	-
MYR 616.43	100 Pieces Per Package	1 Pack(s)	Available	13 Day(s) or more	100	14	30.01~60.00	1.6	[Steel Wire] Spring steel	161.3	[180° (Standard)] 180° (Standard)	0.74	58.84	13.73	61.3	Bagged
MYR 9.56		100 Piece(s)		10 Day(s) or more	150	18	110.01~	2	[Steel Wire] Spring steel	250	[180° (Standard)] 180° (Standard)	0.64	81.39	17.65	100	-
MYR 908.29	100 Pieces Per Package	1 Pack(s)	Available	13 Day(s) or more	150	18	110.01~	2	[Steel Wire] Spring steel	250	[180° (Standard)] 180° (Standard)	0.64	81.39	17.65	100	Bagged
MYR 2.79		100 Piece(s)		8 Day(s) or more	35	6	15.01~30.00	0.8	[Stainless Steel Wire] SUS304-WPB	50.6	90°	0.88	17.26	3.53	15.6	-
MYR 265.02	100 Pieces Per Package	1 Pack(s)	Available	5 Day(s) or more	35	6	15.01~30.00	0.8	[Stainless Steel Wire] SUS304-WPB	50.6	90°	0.88	17.26	3.53	15.6	Bagged
MYR 3.81		100 Piece(s)		8 Day(s) or more	60	8	60.01~110.00	1	[Stainless Steel Wire] SUS304-WPB	93.3	90°	0.6	24.52	4.9	33.3	-
MYR 362.31	100 Pieces Per Package	1 Pack(s)	Available	5 Day(s) or more	60	8	60.01~110.00	1	[Stainless Steel Wire] SUS304-WPB	93.3	90°	0.6	24.52	4.9	33.3	Bagged
MYR 3.81		100 Piece(s)		8 Day(s) or more	45	12	110.01~	1.6	[Stainless Steel Wire] SUS304-WPB	59.3	90°	3.33	62.76	14.71	14.3	-
MYR 362.31	100 Pieces Per Package	1 Pack(s)	Available	5 Day(s) or more	45	12	110.01~	1.6	[Stainless Steel Wire] SUS304-WPB	59.3	90°	3.33	62.76	14.71	14.3	Bagged
MYR 3.06		100 Piece(s)		8 Day(s) or more	30	6	8.01~15.00	0.7	[Stainless Steel Wire] SUS304-WPB	50.2	90°	0.56	12.94	1.67	20.2	-
MYR 290.18	100 Pieces Per Package	1 Pack(s)	Available	5 Day(s) or more	30	6	8.01~15.00	0.7	[Stainless Steel Wire] SUS304-WPB	50.2	90°	0.56	12.94	1.67	20.2	Bagged
MYR 3.06		100 Piece(s)		8 Day(s) or more	35	6	8.01~15.00	0.7	[Stainless Steel Wire] SUS304-WPB	63.8	90°	0.39	12.94	1.67	28.8	-
MYR 290.18	100 Pieces Per Package	1 Pack(s)	Available	5 Day(s) or more	35	6	8.01~15.00	0.7	[Stainless Steel Wire] SUS304-WPB	63.8	90°	0.39	12.94	1.67	28.8	Bagged
MYR 3.43		100 Piece(s)		8 Day(s) or more	40	8	15.01~30.00	0.9	[Stainless Steel Wire] SUS304-WPB	63.8	90°	0.62	18.63	3.92	23.8	-
MYR 325.40	100 Pieces Per Package	1 Pack(s)	Available	5 Day(s) or more	40	8	15.01~30.00	0.9	[Stainless Steel Wire] SUS304-WPB	63.8	90°	0.62	18.63	3.92	23.8	Bagged
MYR 3.81		100 Piece(s)		8 Day(s) or more	55	8	15.01~30.00	0.9	[Stainless Steel Wire] SUS304-WPB	92.5	90°	0.39	18.63	3.92	37.5	-
MYR 362.31	100 Pieces Per Package	1 Pack(s)	Available	5 Day(s) or more	55	8	15.01~30.00	0.9	[Stainless Steel Wire] SUS304-WPB	92.5	90°	0.39	18.63	3.92	37.5	Bagged
MYR 8.02		100 Piece(s)		8 Day(s) or more	100	12	110.01~	1.4	[Stainless Steel Wire] SUS304-WPB	165.4	90°	0.56	47.7	10.49	65.4	-
MYR 762.36	100 Pieces Per Package	1 Pack(s)	Available	5 Day(s) or more	100	12	110.01~	1.4	[Stainless Steel Wire] SUS304-WPB	165.4	90°	0.56	47.7	10.49	65.4	Bagged
MYR 2.16		100 Piece(s)		10 Day(s) or more	20	5	8.01~15.00	0.6	[Steel Wire] Spring steel	28.9	90°	0.78	8.53	1.57	8.9	-
MYR 205.47	100 Pieces Per Package	1 Pack(s)	Available	13 Day(s) or more	20	5	8.01~15.00	0.6	[Steel Wire] Spring steel	28.9	90°	0.78	8.53	1.57	8.9	Bagged
MYR 2.28		100 Piece(s)		10 Day(s) or more	20	6	15.01~30.00	0.8	[Steel Wire] Spring steel	26.7	90°	2.06	17.26	3.53	6.7	-
MYR 216.38	100 Pieces Per Package	1 Pack(s)	Available	13 Day(s) or more	20	6	15.01~30.00	0.8	[Steel Wire] Spring steel	26.7	90°	2.06	17.26	3.53	6.7	Bagged
MYR 2.41		100 Piece(s)		10 Day(s) or more	30	6	15.01~30.00	0.8	[Steel Wire] Spring steel	42.7	90°	1.08	17.26	3.53	12.7	-
MYR 228.96	100 Pieces Per Package	1 Pack(s)	Available	13 Day(s) or more	30	6	15.01~30.00	0.8	[Steel Wire] Spring steel	42.7	90°	1.08	17.26	3.53	12.7	Bagged
MYR 2.41		100 Piece(s)		10 Day(s) or more	35	6	15.01~30.00	0.8	[Steel Wire] Spring steel	50.6	90°	0.88	17.26	3.53	15.6	-
MYR 228.96	100 Pieces Per Package	1 Pack(s)	Available	13 Day(s) or more	35	6	15.01~30.00	0.8	[Steel Wire] Spring steel	50.6	90°	0.88	17.26	3.53	15.6	Bagged
MYR 3.06		1 Piece(s)		10 Day(s) or more	50	10	30.01~60.00	1.2	[Steel Wire] Spring steel	74.8	90°	0.98	30.99	5.49	24.8	-
MYR 290.18	100 Pieces Per Package	1 Pack(s)	Available	13 Day(s) or more	50	10	30.01~60.00	1.2	[Steel Wire] Spring steel	74.8	90°	0.98	30.99	5.49	24.8	Bagged
MYR 2.28		100 Piece(s)		10 Day(s) or more	20	4	3.51~8.00	0.45	[Steel Wire] Spring steel	32.2	90°	0.31	4.81	0.98	12.2	-
MYR 216.38	100 Pieces Per Package	1 Pack(s)	Available	13 Day(s) or more	20	4	3.51~8.00	0.45	[Steel Wire] Spring steel	32.2	90°	0.31	4.81	0.98	12.2	Bagged
MYR 2.91		100 Piece(s)		10 Day(s) or more	35	8	15.01~30.00	0.9	[Steel Wire] Spring steel	53.8	90°	0.78	18.63	3.92	18.8	-
MYR 276.76	100 Pieces Per Package	1 Pack(s)	Available	13 Day(s) or more	35	8	15.01~30.00	0.9	[Steel Wire] Spring steel	53.8	90°	0.78	18.63	3.92	18.8	Bagged

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Basic Information

Type	Standard Type

Configure

400 Part Numbers

View Part Numbers

Configure Remaining Specifications

Completed

Specification/Dimensions

Free Length L(mm)
10

15

20

25

30

35

40

45

50

55

60

65

70

75

80

90

100

150
Clear
Outer Dia. D(Ø)
2

3

4

5

6

8

10

12

14

16

18
Clear
Allowable Load (Configurable Range)(N)
- 1.26~3.50
- 3.51~8.00
- 8.01~15.00
- 15.01~30.00
- 30.01~60.00
- 60.01~110.00
- 110.01~
Clear
Wire Dia.(Ø)
0.28

0.35

0.4

0.45

0.5

0.55

0.6

0.7

0.8

0.9

1

1.1

1.2

1.4

1.6

1.8

2

2.1
Clear
Material
- Stainless Steel Wire
  - SUS304-WPB
- Steel Wire
  - Spring steel
Clear
Length of Spring Used L+F(mm)
12.2

13.5

14

14.6

18.9

19.5

20.6

20.7

21

21.5

21.7

22.5

23.9

24.1

26.7

26.9

27.1

28.9

29

29.6

29.8

30

30.2

30.8

31

32.2

34.1

34.3

34.6

35

36.5

37.8

38.3

38.6

38.7

38.9

39.2

39.4

40.4

41.9

42.5

42.7

43.7

44.3

44.5

45

45.9

46.7

47.3

47.5

48.7

48.9

49

50.2

50.4

50.6

50.7

51.7

51.8

52

53.2

53.8

55.3

57.3

57.9

58.7

59.2

59.3

60.6

63.8

64

64.5

65

65.2

65.6

66.4

67.2

68.3

70

70.3

72.4

73.3

74.3

74.5

74.8

75

79.8

82.2

82.3

82.6

83

83.6

86.4

87.8

91.1

91.6

92.5

93.1

93.3

95.7

101.3

101.7

102.3

107.4

110

111.4

113

118.3

120

122.3

141

149

161.3

165.4

250
Clear
Hook Opposing Angle
- 180° (Standard)
  - 180° (Standard)
- 90°
Clear
Standard Spring Constant(N/mm)
0.13

0.14

0.18

0.2

0.22

0.23

0.26

0.27

0.28

0.29

0.31

0.32

0.35

0.37

0.39

0.43

0.45

0.49

0.5

0.51

0.52

0.55

0.56

0.57

0.59

0.6

0.62

0.64

0.66

0.68

0.69

0.7

0.74

0.78

0.81

0.88

0.89

0.93

0.98

1.03

1.08

1.18

1.2

1.27

1.28

1.32

1.47

1.57

1.77

1.86

2.06

2.16

2.26

2.39

2.45

2.81

2.94

3.14

3.33

3.36

3.39

3.82

4.12

4.13

4.17

4.23

4.51

5.58

5.69

0088
Clear
Max. Load(N)
2.45

3.33

4.41

4.81

6.37

6.47

8.43

8.53

12.94

14.71

17.26

18.63

23.24

23.54

24.52

30.99

31.38

47.7

49.03

58.84

62.76

74.53

81.39

83.36

86.3
Clear
Initial Tension(N)
0.49

0.66

0.88

0.98

1.18

1.37

1.57

1.67

1.86

2.45

3.53

3.92

4.71

4.9

5.49

5.88

6.86

10.49

12.75

13.73

14.71

16.67

17.65

19.61

23.54
Clear
Max. Displacement(mm)
2.2

3.5

3.9

4

4.5

4.6

5.6

5.7

5.8

6

6.5

6.7

6.9

7.1

7.5

7.8

8.3

8.7

8.9

9

9.1

9.3

9.6

9.8

10

10.2

10.4

10.7

10.9

11.7

11.8

12

12.2

12.5

12.7

12.9

13.2

13.7

13.9

14

14.2

14.3

14.4

14.5

15.2

15.4

15.6

16.4

16.9

17.3

17.4

17.5

17.8

18.7

18.8

18.9

19.2

19.3

19.5

20

20.2

20.3

20.6

21.7

22.2

22.3

23.1

23.7

23.8

24

24.5

24.8

25

27.4

28

28.3

28.6

28.8

30

30.3

31.6

32.2

32.6

33.3

34.8

35.7

36.3

36.4

37.3

37.5

40

41

41.1

41.4

41.7

43

43.3

47.3

50

59

61.3

65.4

100
Clear
Sales packaging
- Bagged
Clear
type
- C-AUS
- C-AUU
- C-AWF
- C-AWS
- C-AWU
- C-BUSS
- C-BUU
- C-BWS
- C-BWU
Clear
CAD
- 2D
- 3D
Clear

Days to Ship

All

1 Day(s) or Less

2 Day(s) or Less

5 Day(s) or Less

6 Day(s) or Less

8 Day(s) or Less

9 Day(s) or Less

10 Day(s) or Less

13 Day(s) or Less
Clear

Specify Alterations

The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .

Frequently asked question (FAQ)

Question: What is the initial tension?: Answer: It can be understood that when a general tensile spring is under tension, the tension measured when it is about to undergo elastic deformation without deformation (critical state) is called the initial tension. It is realized by properly controlling the process parameters in the manufacturing process of tensile spring.
MISUMI tension spring specifications (except for free designation) have been standardized, i.e. the maximum load of the same diameter is a certain value. Because the tensile spring is made on the basis of the maximum load, the initial tension and spring coefficient are the reference values.
Question: What is the life of the tensile spring?: Answer: Some hook installation methods of tension springs may cause stress concentration, so the standard use times cannot be provided. To increase the use times, it is recommended to use it under 70% of the allowable displacement Fmax.
· It is recommended to use it at room temperature below 40°C, and the load value will decrease due to service conditions at temperatures over 40°C .
Question: What is the spring constant?: Answer: The spring constant is the force necessary to give the spring unit displacement, which is used to express the characteristics of the spring.
Question: What are the JIS standards for general spring-related materials?: Answer: Piano wires: JIS G 3522
Iron wires: JIS G 3532
Hard drawn steel wires: JIS G 3521
Stainless steel wires for springs: JIS G 4313
Question: What is the difference between a piano steel wire spring and a hard drawn steel wire spring?: Answer: There is little difference in appearance between the two materials. In short, the piano wire is an advanced material, and the hard drawn steel wire is a general material.
The piano wire is often used as a spring for precision machinery while the hard drawn steel wire is mostly used as a peripheral spring for groceries or blinds.
They are both high-carbon steels with almost the same chemical composition. The production of piano wires is time-consuming and they are expensive because there is additional standardized management and inspection of impurities, the depth of surface scars, and the depth of decarburized layer.
Although the subtle difference is invisible to the naked eye, it has a great influence on the quality of the spring.

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Tension Springs Medium Light / Medium Load【1-100 Pieces Per Package】 (Part Numbers)

Part Number

Basic Information

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Specification/Dimensions

Free Length L(mm)

Outer Dia. D(Ø)

Allowable Load (Configurable Range)(N)

Wire Dia.(Ø)

Material

Length of Spring Used L+F(mm)

Hook Opposing Angle

Standard Spring Constant(N/mm)

Max. Load(N)

Initial Tension(N)

Max. Displacement(mm)

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