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WSCA-SUS-UNC1/4

Surface Treatment Inner Dia. d Outer Dia. D Nominal of Thread (M) Thickness t Sales Unit Material: Stainless Steel Surface Treatment (Detailed) type Nominal of Thread (inch) Days to Ship

Specification/Dimensions

Surface Treatment
- Painting, Coating
  - Painting / Coating
Clear
Inner Dia. d(mm)
3.4

4.4

5.4

6.5

7.2

8.7

10.7

13

15.2

17

19.5

20

21.4

23.4

25.3

28.4

31.4

34.4

40.4
Clear
Outer Dia. D(mm)
9

11.5

18.5

23

34.5

39

42

47

48.5

58.5
Clear
Nominal of Thread (M)
3

4

5

6

8

10

12

14

16

18

20

22

24

30
Clear
Thickness t(mm)
2

2.2

3

3.2

6.8
Clear
Sales Unit
- Low Quantity (can be purchased from one)
- Box/package
Clear
Material: Stainless Steel
- 254SMO
- SUS316L
  - EN1.4404
Clear
Surface Treatment (Detailed)
- Copper Plating
  - German Brown plating
Clear
type
- N
- WSCA
Clear
Nominal of Thread (inch)
1/4

3/4
Clear

Days to Ship

All

5 Day(s) or Less

6 Day(s) or Less
Clear

Specify Alterations

Nord-Lock Washer【1-200 Pieces Per Package】

Volume Discount

Brand :

Order Qty :
Total Price :

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Days to ship :

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Product Description

[Nominal] 3/3.5/4/5/6/8/10/11/12/14/16/18/20/22/24/27/30/33/36/39/42/45/48/52/56/60/64/68/72/76/80/85/90/95/100/105/110/115/120/125/130
[Material] Steel/Stainless Steel
[Surface Processing] Chromate Plating / Trivalent White / Baked Paint Finish / None

Friction-Independent Thread-Locker Product

Wedge locking mechanism

It is based on wedge locking technology that uses a wedge-shaped cam, and can physically prevent the bolted joint from loosening in rotation even under severe vibration and fluctuating loads.
Instead of using friction, the axial force of the bolted body itself prevents loosening. This system comprises a pair of washers with a cam surface on one side and a radial rib surface on the other side.
The cam angle (α) is designed to be larger than the screw lead angle (β), and the cam surfaces create a wedge effect each other, which prevents the bolt from loosening due to rotation. Therefore, the Nord-Lock washer can be used for fine and extra-fine items that are finer than coarse screws. On the other hand, self-tapping screws and wood screws with a larger pitch than coarse screws do not provide a sufficient thread-locker effect.
Although it can be reused, the maximum number of reuses depends on the amount of wear on the cam surface that occurs when the cam surface is released, so it varies depending on the axial force being fastened. In addition, if the pitch becomes finer in the fine, extra fine, etc., the amount of wear at the time of release increases, and the number of reuse limits decreases.

Drawing and Dimensions of Nord-Lock Washer

Drawing

(Unit: mm)

Model	ød (inner diameter)	ød (outer diameter)	T (thickness)
Model	ød (inner diameter)	ød (outer diameter)	Steel (SC material)	SUS	254SMO
NL3	3.4	7.0	1.8	2.2	2.2
NL4	4.4	7.6	1.8	2.2	2.2
NL5	5.4	9.0	1.8	2.2	2.2
NL6	6.5	10.8	1.8	2.2	2.2
NL8	8.7	13.5	2.5	2.0	2.0
NL10	10.7	16.6	2.5	2.0	2.0
NL11	11.4	18.5	2.5	2.2	2.2
NL12	13.0	19.5	2.5	2.0	2.0
NL14	15.2	23.0	3.4	3.0	3.0
NL16	17.0	25.4	3.4	3.0	3.0
NL18	19.5	29.0	3.4	3.2	3.2
NL20	21.4	30.7	3.4	3.0	3.0
NL22	23.4	34.5	3.4	3.2	3.2
NL24	25.3	39.0	3.4	3.2	3.2
NL27	28.4	42.0	5.8	6.8	5.8
NL30	31.4	47.0	5.8	6.8	5.8
NL33	34.4	48.5	5.8	6.8	5.8
NL36	37.4	55.0	6.6	6.8	5.8
NL39	40.4	58.5	6.6	6.8	5.8

How to Use Nord-Lock Washers and Precautions

Tapped hole
Please use it by attaching it between the bolt/nut and the mating material.

Counterbore
Since the outer diameter of the washer may be larger than the bolt head, please check the dimensions before use.

Through hole
Use Nord-Lock washers on both the bolt and nut sides.
If it is used on only one side, it may loosen on the side without the Nord-Lock, so please be careful.

Stud Bolt
It can be used without using adhesive.

When the pilot hole is large or a slotted hole, or the surface of the mating material is soft
Wide (SP) type Nord-Lock washers with a large outer diameter are recommended. More effective when used in combination with flange bolts and nuts.

Please Avoid Using It in the Following Designs

Combined use with other washers such as plain washers and spring washers
When the mating material is harder than the Nord-Lock washer due to hardening, etc.
When the mating material is very soft (wood, plastic, etc.)
When the mating material is deeply recessed or greatly fits or , such as a thick coating layer
When slipping between the materials to be fastened and between the bolts and nuts is premised, as in the case with bearing
When axial force is not generated with the use of intermediate fastening, etc.

: 30; 45; 60

Part Number
WSCA-SUS-UNC1/4

Part Number	Price	Minimum Order Qty.	Volume Discount	Days to Ship	RoHS	Surface Treatment	Inner Dia. d (mm)	Outer Dia. D (mm)	Nominal of Thread (M)	Thickness t (mm)	Sales Unit	Material: Stainless Steel	Surface Treatment (Detailed)	Nominal of Thread (inch)	Diameter	Standard Name (Material)
	₹ 267.47	1 Piece(s)		6 Day(s) or more	-	[Painting, Coating] Painting / Coating	7.2	11.5	-	-	Low Quantity (can be purchased from one)	[SUS316L] EN1.4404	[Copper Plating] German Brown plating	1/4	-	Stainless steel

Basic Information

Material	Stainless Steel	Type	Nord-Lock Washer	Type (Application)	Loosening prevention

Please check the type/dimensions/specifications of the part WSCA-SUS-UNC1/4 in the Nord-Lock Washer series.

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

Product variants

Part Number
WSCA-254SMO-M12
WSCA-254SMO-M14
WSCA-254SMO-M16
WSCA-SUS-UNC3/4
WSCB-SUS-M11
WSCB-SUS-M20

Standard Unit Price	Minimum order quantity	Volume Discount	Days to Ship	RoHS	Surface Treatment	Inner Dia. d (mm)	Outer Dia. D (mm)	Nominal of Thread (M)	Thickness t (mm)	Sales Unit	Material: Stainless Steel	Surface Treatment (Detailed)	Nominal of Thread (inch)	Diameter	Standard Name (Material)
₹ 1,066.40	1 Piece(s)		6 Day(s) or more	10	-	13	-	12	2	Low Quantity (can be purchased from one)	254SMO	-	-	-	-
₹ 1,921.00	1 Piece(s)	Available	6 Day(s) or more	10	-	15.2	-	14	3	Box/package	254SMO	-	-	-	-
₹ 1,652.80	1 Piece(s)		6 Day(s) or more	10	-	17	-	16	3	Low Quantity (can be purchased from one)	254SMO	-	-	-	-
₹ 1,582.41	1 Piece(s)		6 Day(s) or more	-	[Painting, Coating] Painting / Coating	20	-	-	-	Low Quantity (can be purchased from one)	[SUS316L] EN1.4404	[Copper Plating] German Brown plating	3/4	-	Stainless steel
₹ 653.49	1 Piece(s)		6 Day(s) or more	-	[Painting, Coating] Painting / Coating	-	18.5	-	-	Low Quantity (can be purchased from one)	[SUS316L] EN1.4404	[Copper Plating] German Brown plating	-	M11	Stainless steel
₹ 1,376.39	1 Piece(s)		6 Day(s) or more	-	[Painting, Coating] Painting / Coating	21.4	-	-	-	Low Quantity (can be purchased from one)	[SUS316L] EN1.4404	[Copper Plating] German Brown plating	-	M20	Stainless steel

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