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Parallel Keys With Center Counterbored Hole (Part Numbers)

Volume Discount

Check FAQ of this product (4 items)

MISUMI

MiSUMi Economy

MISUMI

This is an economy item, The price is cheaper than the MISUMI standard product.

RoHS

Part Number

Configured Part Number is shown.

Drawing/Specifications
3D Preview
Part Numbers

Product Overview

Parallel key
A key that relies on two side surfaces as working surfaces, and transfers torque by pressing the sides of the key and the keyway.

Product photo
Economic type Machine Keys Center counterbored type

Economic type Machine Keys Center counterbored type

Dimensional Drawing

Economic type Parallel key Center counterbored type

Type			Material	Tensile Strength
Double Round Head Type A	Straight Type B	Single Round Head Type C	Material	Tensile Strength
C-KESZ	C-KEDZ	C-KEGZ	Steel	500 N/mm² or above
-	C-KEDSZ	-	Stainless Steel	500 N/mm² or above

Specification Table

Part Number			L Can be specified down to 5mm increments	H Tolerance		d	d1	h	C
Type	Bh9
C-KEDZ C-KESZ C-KEGZ	8	0 -0.036	35〜80	7	0 -0.09	3.4	6	3.5	0.25〜0.40

L	Tolerance
Shortest~10	0 -0.36
12~18	0 -0.43
20~28	0 -0.52
32~50	0 -0.62
56~80	0 -0.74
90~110	0 -0.87

Part Number			Total length L					H Tolerance		(d)	(d1)	(h)	C
Type	Width Bh9		Total length L					H Tolerance		(d)	(d1)	(h)	C
C-KESZ C-KEDZ C-KEGZ C-KEDSZ	8	0 -0.036	15	20	25			7	0 -0.09	3.4	6	3.5	0.25 to 0.40
	10	0 -0.036				30		8		4.5	7.5	4.5	0.40 to 0.60
	14	0 -0.043					35	9		5.5	9.5	5.5	0.40 to 0.60

L	Tolerance
Shortest~10	0 -0.36
12~18	0 -0.43
20~28	0 -0.52
32~50	0 -0.62
56~80	0 -0.74
90~110	0 -0.87

Product Features

Parallel key, is a key that relies on two side surfaces as working surfaces, and transfers torque by pressing the sides of the key and the keyway.
Parallel keys are divided into three types: standard parallel keys, thin parallel keys, guiding parallel keys.
Standard parallel keys have good centering, high positioning accuracy and easy assembly, but they cannot achieve axial fixation of parts on the shaft. They are used for shafts that are high-speed or subjected to impact and variable loads;
Thin parallel keys are used for thin-walled structures and places where the transmission torque is small; guiding parallel keys are used to fix the keys on the shaft with screws, and are used for occasions where the parts on the shaft do not move much along the shaft.

■Difference between MISUMI Economy series parallel key and generic products on the market※

Economy series product is different in tolerance compared to the standard product, and at the same time the price drops significantly.
· For MISUMI Economy series parallel keys, the tensile strength can meet the requirements of medium and low speed use. The dimensional tolerance conforms to GB standard, with guaranteed material and stable performance
■Quality:
Round R Angle: MISUMI Economy series incorporates imported cutting tools and strictly complies with GB standard. For generic products on the market, the accuracy of round R angle is poor, and it cannot be completely matched during assembly.

※The test data are obtained through testing by our company, which are for reference only
※Generic products on the market are similar products randomly purchased by our company from online or offline markets

Precautions

1) When the keyway is used in conjunction with the parallel key, if the clearance is too large, the parallel key will not fix completely due to loosening.
2) When the keyway and the parallel key are used too tightly, the parallel key cannot be installed in the keyway.

Economic type Machine Key Center counterbored type

Economic type Machine Key Center counterbored type

Example of Use

Example of using parallel key

Economic type Parallel key Center thread counterbored type

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

Part Number
C-KEDSZ14-35
C-KEDZ8-20
C-KEGZ8-20
C-KESZ8-15
C-KESZ8-20
C-KESZ8-25
C-KESZ10-30

Standard Unit Price	Minimum order quantity	Volume Discount	Days to Ship	Shape	Width (mm)	Overall Length (mm)	Material
MYR 17.92	10 Piece(s)	Available	14 Day(s)	[Parallel Keys (Straight)] Parallel Keys (Straight)	14	35	[Stainless Steel] Stainless Steel
MYR 3.02	1 Piece(s)	Available	1 Day(s)	[Parallel Keys (Straight)] Parallel Keys (Straight)	8	20	[Steel] Steel
MYR 3.02	1 Piece(s)	Available	1 Day(s)	Parallel Keys (Round at One End)	8	20	[Steel] Steel
MYR 12.72	10 Piece(s)	Available	14 Day(s)	Parallel Keys (Round at Both Ends)	8	15	[Steel] Steel
MYR 3.02	1 Piece(s)	Available	1 Day(s)	Parallel Keys (Round at Both Ends)	8	20	[Steel] Steel
MYR 12.72	10 Piece(s)	Available	6 Day(s)	Parallel Keys (Round at Both Ends)	8	25	[Steel] Steel
MYR 13.88	10 Piece(s)	Available	6 Day(s)	Parallel Keys (Round at Both Ends)	10	30	[Steel] Steel

Basic Information

Hole Machining	Counterbored Hole	Main Body Hardened	Not Provided

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7 Part Numbers

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Specification/Dimensions

Shape
- Parallel Keys (Straight)
  - Parallel Keys (Straight)
- Parallel Keys (Round at One End)
- Parallel Keys (Round at Both Ends)
Clear
Width(mm)
8

10

14
Clear
Overall Length(mm)
15

20

25

30

35
Clear
Material
- Steel
  - Steel
- Stainless Steel
  - Stainless Steel
Clear
type
- C-KEDSZ
- C-KEDZ
- C-KEGZ
- C-KESZ
Clear
CAD
- 2D
- 3D
Clear

Days to Ship

All

1 Day(s) or Less

6 Day(s) or Less

14 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 kinds of materials do parallel keys generally have?: Answer: There are two materials: steel and stainless steel.
Question: How to distinguish the use of parallel keys according to the different shapes?: Answer: Choose different shapes to use, depending on the keyway shape and position.
Question: What do I need to pay attention to when using parallel keys?: Answer: When the fit clearance is too large, it is easy to loosen and cannot be completely fixed, and when it is too tight, it may be unable to install.
Question: What is the effect of removing threaded hole on the parallel key?: Answer: It can facilitate disassembly and reuse without damaging the shaft and keyway.