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Retaining Rings/External/C-Type

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Volume Discount

[Features]·A C-type retaining ring, external. ·The unit of purchase is loose (available in quantities of 1 pc.). ·The retaining ring type is an outer ring retaining ring.

(i)Caution

[Specification Change] The material of stainless steel products will be changed sequentially starting in July 2025. Please see here for details.
There is a possibility that products and packages before and after the change may be mixed in the same shipment, but there will be no problems with use.
Please check the content on our website as the PDF does not contain the most up-to-date information.

Part Number

Configured Part Number is shown.

Drawing/Specifications
3D Preview
Part Numbers
Catalog

STWN
STWS (Stainless Steel)

No. 8 or Less

Applicable Shaft

d₄: Maximum O.D. when a retaining ring is fitted inside d₁
(Clearance O.D.)

Type	[ M ]Material	[ H ]Hardness
STWN	Spring Steel	44~53HRC
STWS	SUS304-CSP Equivalent	36~44HRC

Specifications

Part Number

STWS6

Part Number		Retaining Ring							Reference:	Applicable Shaft (Reference)
Part Number		Retaining Ring							Reference:	Applicable Shaft (Reference)
Type	No.	D₃		t		b (Approx.)	a (Approx.)	d₀ (Min.)	d₄	d₁	d₂		m		n (Min.)
Type	No.	D₃	Tolerance	t	Tolerance	b (Approx.)	a (Approx.)	d₀ (Min.)	d₄	d₁	d₂	Tolerance	m	Tolerance	n (Min.)
STWN	3	2.7	+0.04 －0.15	0.25	±0.025	0.5	1.7	0.7	7	3	2.85	0 － 0.04	0.35	+ 0.10 0	0.3
	4	3.7		0.4	±0.03	0.9	2.2	0.8	9	4	3.8		0.5
	5	4.7		0.6	±0.04	1.1	2.4	0.8	10.5	5	4.8		0.7
	6	5.6	+0.06 －0.2	0.7		1.3	2.8	1	12	6	5.7		0.8		0.5
	7	6.5		0.8		1.4	3		14	7	6.7	0 － 0.06	0.9		0.5
	8	7.4		0.8		1.6	3		15	8	7.6	0 － 0.06	0.9		0.6
STWS (Stainless Steel)	4	3.6	±0.1	0.25	±0.03	0.7	1.4	0.7	9	4	3.7	± 0.06	0.3	+ 0.10 0	1.0
	5	4.5		0.4	±0.04	0.7	1.4		10.5	5	4.7		0.45		1.5
	6	5.5		0.4		0.8	2.0		12	6	5.7		0.45
	7	6.3		0.65		0.9	2.0	1	14	7	6.5		0.7
	8	7.1		0.65		1.0	2.2	1	15	8	7.4		0.7
STWN STWS (Stainless Steel)	10	9.3	±0.15	1	±0.05	1.8	3	1.2	17	10	9.6	0 － 0.09	1.15	+ 0.14 0	1.5
	11	10.2	±0.15			2	3.1	1.2	18	11	10.5	0 － 0.11
	12	11.1	±0.18			2.1	3.2	1.5	19	12	11.5
	13	12				2.1	3.3	1.5	20	13	12.4
	14	12.9				2.2	3.4	1.7	22	14	13.4
	15	13.8					3.5		23	15	14.3
	16	14.7					3.6		24	16	15.2
	17	15.7					3.7		25	17	16.2
	18	16.5		1.2	±0.06	2.6	3.8		26	18	17		1.35
	19	17.5				2.7	3.8	2	27	19	18
	20	18.5	±0.2				3.9		28	20	19	0 － 0.21
	21	19.5					4		30	21	20
	22	20.5					4.1		31	22	21
	23	21.4				2.9	4.5		32.5	23	22
	24	22.2				3.1	4.2		33	24	22.9
	25	23.2					4.3		34	25	23.9
	26	24.2					4.4		35	26	24.9
	28	25.9		1.5			4.6		38	28	26.6		1.65
	29	26.9				3.5	4.7		39	29	27.6
	30	27.9					4.8		40	30	28.6
	32	29.6					5	2.5	43	32	30.3	0 － 0.25
	35	32.2	±0.25			4	5.4		46	35	33
	40	37	±0.4	1.75	±0.07	4.5	5.8		53	40	38		1.9		2
	45	41.5		1.75		4.8	6.3		58	45	42.5		1.9
	50	45.8		2		5	6.7		64	50	47		2.2
	52	47.8				5	6.8		66	52	49
	60	55.8	±0.45			5.5	7.2		75	60	57	0 － 0.3
	80	74.5	±0.45	2.5	±0.08	7.4	8.2		97	80	76.5	0 － 0.3	2.7		2.5

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

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Part Number
STWN3
STWN4
STWN5
STWN6
STWN7
STWN8
STWN10
STWN11
STWN12
STWN13
STWN14
STWN15
STWN16
STWN17
STWN18
STWN19
STWN20
STWN21
STWN22
STWN23
STWN24
STWN25
STWN26
STWN28
STWN29
STWN30
STWN32
STWN35
STWN40
STWN45
STWN50
STWN52
STWN60
STWN80
STWS4
STWS5
STWS6
STWS7
STWS8
STWS10
STWS11
STWS12
STWS13
STWS14
STWS15
STWS16
STWS17
STWS18
STWS19
STWS20
STWS21
STWS22
STWS23
STWS24
STWS25
STWS26
STWS28
STWS29
STWS30
STWS32

Standard Unit Price	Minimum order quantity	Volume Discount	Days to Ship	RoHS	Nominal	Material	Shaft or Hole Used d1 (Reference) (mm)	Applicable Shaft or Hole d2 (Reference) (mm)	Shaft / Shaft Bore / Groove Nominal (Reference) (mm)
MYR 2.67	1 Piece(s)	Available	2 Day(s) or more	10	3	Steel	3	2.85	3
MYR 2.67	1 Piece(s)	Available	2 Day(s) or more	10	4	Steel	4	3.8	4
MYR 2.67	1 Piece(s)	Available	1 Day(s) or more	10	5	Steel	5	4.8	5
MYR 2.67	1 Piece(s)	Available	2 Day(s) or more	10	6	Steel	6	5.7	6
MYR 2.67	1 Piece(s)	Available	2 Day(s) or more	10	7	Steel	7	6.7	7
MYR 2.67	1 Piece(s)	Available	2 Day(s) or more	10	8	Steel	8	7.6	8
MYR 2.67	1 Piece(s)	Available	4 Day(s) or more	10	10	Steel	10	9.6	10
MYR 2.67	1 Piece(s)	Available	2 Day(s) or more	10	11	Steel	11	10.5	11
MYR 2.67	1 Piece(s)	Available	1 Day(s) or more	10	12	Steel	12	11.5	12
MYR 2.67	1 Piece(s)	Available	2 Day(s) or more	10	13	Steel	13	12.4	13
MYR 2.67	1 Piece(s)	Available	2 Day(s) or more	10	14	Steel	14	13.4	14
MYR 2.67	1 Piece(s)	Available	2 Day(s) or more	10	15	Steel	15	14.3	15
MYR 2.67	1 Piece(s)	Available	1 Day(s) or more	10	16	Steel	16	15.2	16
MYR 2.67	1 Piece(s)	Available	1 Day(s) or more	10	17	Steel	17	16.2	17
MYR 3.73	1 Piece(s)	Available	1 Day(s) or more	10	18	Steel	18	17	18
MYR 3.73	1 Piece(s)	Available	2 Day(s) or more	10	19	Steel	19	18	19
MYR 3.73	1 Piece(s)	Available	4 Day(s) or more	10	20	Steel	20	19	20
MYR 3.73	1 Piece(s)	Available	1 Day(s) or more	10	21	Steel	21	20	21
MYR 4.87	1 Piece(s)	Available	1 Day(s) or more	10	22	Steel	22	21	22
MYR 4.87	1 Piece(s)	Available	1 Day(s) or more	10	23	Steel	23	22	23
MYR 4.87	1 Piece(s)	Available	2 Day(s) or more	10	24	Steel	24	22.9	24
MYR 4.87	1 Piece(s)	Available	1 Day(s) or more	10	25	Steel	25	23.9	25
MYR 4.87	1 Piece(s)	Available	1 Day(s) or more	10	26	Steel	26	24.9	26
MYR 8.25	1 Piece(s)	Available	2 Day(s) or more	10	28	Steel	28	26.6	28
MYR 8.25	1 Piece(s)	Available	4 Day(s) or more	10	29	Steel	29	27.6	29
MYR 8.25	1 Piece(s)	Available	2 Day(s) or more	10	30	Steel	30	28.6	30
MYR 8.25	1 Piece(s)	Available	1 Day(s) or more	10	32	Steel	32	30.3	32
MYR 12.35	1 Piece(s)	Available	2 Day(s) or more	10	35	Steel	35	33	35
MYR 12.35	1 Piece(s)	Available	2 Day(s) or more	10	40	Steel	40	38	40
MYR 12.88	1 Piece(s)	Available	2 Day(s) or more	10	45	Steel	45	42.5	45
MYR 14.92	1 Piece(s)	Available	1 Day(s) or more	10	50	Steel	50	47	50
MYR 15.95	1 Piece(s)	Available	2 Day(s) or more	10	52	Steel	52	49	52
MYR 18.55	1 Piece(s)	Available	2 Day(s) or more	10	60	Steel	60	57	60
MYR 37.57	1 Piece(s)	Available	2 Day(s) or more	10	80	Steel	80	76.5	80
MYR 2.93	1 Piece(s)	Available	2 Day(s) or more	10	4	Stainless Steel	4	3.7	4
MYR 2.93	1 Piece(s)	Available	2 Day(s) or more	10	5	Stainless Steel	5	4.7	5
MYR 2.93	1 Piece(s)	Available	1 Day(s) or more	10	6	Stainless Steel	6	5.7	6
MYR 2.93	1 Piece(s)	Available	1 Day(s) or more	10	7	Stainless Steel	7	6.5	7
MYR 2.93	1 Piece(s)	Available	2 Day(s) or more	10	8	Stainless Steel	8	7.4	8
MYR 2.93	1 Piece(s)	Available	2 Day(s) or more	10	10	Stainless Steel	10	9.6	10
MYR 2.93	1 Piece(s)	Available	2 Day(s) or more	10	11	Stainless Steel	11	10.5	11
MYR 2.93	1 Piece(s)	Available	2 Day(s) or more	10	12	Stainless Steel	12	11.5	12
MYR 2.93	1 Piece(s)	Available	1 Day(s) or more	10	13	Stainless Steel	13	12.4	13
MYR 3.92	1 Piece(s)	Available	1 Day(s) or more	10	14	Stainless Steel	14	13.4	14
MYR 3.92	1 Piece(s)	Available	2 Day(s) or more	10	15	Stainless Steel	15	14.3	15
MYR 3.92	1 Piece(s)	Available	2 Day(s) or more	10	16	Stainless Steel	16	15.2	16
MYR 3.92	1 Piece(s)	Available	1 Day(s) or more	10	17	Stainless Steel	17	16.2	17
MYR 4.87	1 Piece(s)	Available	2 Day(s) or more	10	18	Stainless Steel	18	17	18
MYR 4.87	1 Piece(s)	Available	1 Day(s) or more	10	19	Stainless Steel	19	18	19
MYR 4.87	1 Piece(s)	Available	2 Day(s) or more	10	20	Stainless Steel	20	19	20
MYR 4.87	1 Piece(s)	Available	1 Day(s) or more	10	21	Stainless Steel	21	20	21
MYR 6.39	1 Piece(s)	Available	1 Day(s) or more	10	22	Stainless Steel	22	21	22
MYR 6.39	1 Piece(s)	Available	1 Day(s) or more	10	23	Stainless Steel	23	22	23
MYR 6.39	1 Piece(s)	Available	2 Day(s) or more	10	24	Stainless Steel	24	22.9	24
MYR 6.39	1 Piece(s)	Available	1 Day(s) or more	10	25	Stainless Steel	25	23.9	25
MYR 6.39	1 Piece(s)	Available	4 Day(s) or more	10	26	Stainless Steel	26	24.9	26
MYR 9.79	1 Piece(s)	Available	2 Day(s) or more	10	28	Stainless Steel	28	26.6	28
MYR 9.79	1 Piece(s)	Available	2 Day(s) or more	10	29	Stainless Steel	29	27.6	29
MYR 9.79	1 Piece(s)	Available	1 Day(s) or more	10	30	Stainless Steel	30	28.6	30
MYR 9.79	1 Piece(s)	Available	2 Day(s) or more	10	32	Stainless Steel	32	30.3	32

Product TOP

Basic Information

Type	Retained with Outer Ring	Shape	Standard Type (C-Ring)	Retaining Ring Type	Retained with Outer Ring
Mounting Method Type	Standard	Sales Unit	Low Quantity (Available beginning with 1 pc.)	Product Type	Retaining Ring

Configure

67 Part Numbers

View Part Numbers

Configure Remaining Specifications

Completed

Specification/Dimensions

Nominal
3

4

5

6

7

8

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

28

29

30

32

35

40

45

50

52

60

80
Clear
Material
Steel

Stainless Steel
Clear
Shaft or Hole Used d1 (Reference)(mm)
3

4

5

6

7

8

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

28

29

30

32

35

40

45

50

52

60

80
Clear
Applicable Shaft or Hole d2 (Reference)(mm)
2.85

3.7

3.8

4.7

4.8

5.7

6.5

6.7

7.4

7.6

9.6

10.5

11.5

12.4

13.4

14.3

15.2

16.2

17

18

19

20

21

22

22.9

23.9

24.9

26.6

27.6

28.6

30.3

33

38

42.5

47

49

57

76.5
Clear
Shaft / Shaft Bore / Groove Nominal (Reference)(mm)
3

4

5

6

7

8

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

28

29

30

32

35

40

45

50

52

60

80
Clear
type
- STWN
- STWS
Clear
CAD
- 2D
- 3D
Clear

Days to Ship

All

1 Day(s) or Less

2 Day(s) or Less

4 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 a C-type retaining ring?: Answer: A C-type retaining ring is a metal ring used to secure components on a shaft or in a bore. It is designed to fit into a machined groove and prevent axial movement of the components.
Question: What are the common uses of C-type retaining rings?: Answer: C-type retaining rings are used to hold components in place on shafts or within bores in various applications, such as automotive, machinery, and equipment assemblies.
Question: How are C-type retaining rings installed?: Answer: They are typically installed using special pliers designed for snap rings. The pliers compress the ring, allowing it to fit into the groove on a shaft or bore.
Question: What are the types of C-type retaining rings?: Answer: This is external C-type rings for shafts.

Check other FAQ (1 items) Hide

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Retaining Rings/External/C-Type

(i)Caution

Specifications

Part Number

Basic Information

Configure

Specification/Dimensions

Nominal

Material

Shaft or Hole Used d1 (Reference)(mm)

Applicable Shaft or Hole d2 (Reference)(mm)

Shaft / Shaft Bore / Groove Nominal (Reference)(mm)

type

CAD

Days to Ship

Specify Alterations

Frequently asked question (FAQ)

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