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Knob Screws（Mounting Section, Surface Treatment：Bright Chrome Plating）

Knob Screws are utilized in various applications to enable manual control, adjustment, or fastening in a wide range of applications. They have widespread applications across diverse industries such as in automation systems. In various manufacturing industries, for example, food and pharmaceutical industries, and electronics industries.
When selecting a Knobs Screws, it is crucial to consider factors, including size, shape (eg., round, mushroom, ball, T- shaped and polygon shape), material (eg., plastic, stainless steel, aluminum and so on.) and mounting type for example threaded and tapped. These considerations are crucial for ensuring the production of high-quality products. We highly recommend reputable brands such as MISUMI, ESCO and KONISHI, as well as cost-effective options from MISUMI ECONOMY.
Take advantage of the convenience of FREE SHIPPING and NO MINIMUM ORDER on knob screw. Should you have any doubts or require assistance in choosing the right product, our experts are readily available to provide advice and guidance.

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Specification/Dimensions

Mounting Section Dia. d (mm) or Nominal Dia.
1/2

1/4

3

M3

3/8

4

M4

5

M5

5/16

6

M6

6.1

7

8

M8

9

10

M10

12

M12

M14

16

M16

20

M20

M24
Drawing

Clear

Mounting Section Type
- Threaded
- Threaded (Stepped)
- Tapped
- Tapped (Stepped)
- Round Bore
- Press Fit
- Others
Clear

Mounting Section, Length L(mm)
2

3

4

5

6

6.5

6.6

7

7.2

7.5

8

8.4

8.5

8.8

9

9.1

9.5

9.6

10

10.5

10.7

11

11.5

11.9

12

12.5

13

13.4

13.5

13.8

14

14.5

14.6

15

16

17

18

18.4

18.8

19

19.6

20

21

22

23

23.4

23.8

24

24.6

25

26

26.5

27

28

28.4

28.5

28.8

29

30

31

32

33

34

35

36

37

38

39

39.5

40

42

44

45

50

54.5

55

60

70

80
Drawing

Clear

Main Body, Type
- Round Shape
- Polygonal Shape
- T Shape
- Wing Shape
- Special Shape
- Related Components
Images

Clear

Main Body Material
- Stainless Steel
- Steel
- Aluminum
- Nylon
- Phenol
- ABS
- Polyacetal
- Brass
- Polyamide
- Polypropylene
- Melamine Plastic
- EPDM
- Others
- Vinyl
- Cast Iron
- Plastic_
Clear

Round Shape, Type
- Cylindrical Shape
- Clamp Shape
- Mushroom Shape
- Rose Shape
- Volume Knob Shape
- Balls
Images

Clear

Mounting Section, Material
- Stainless Steel
- Steel
- Aluminum
- Nylon
- Phenol
- Polyacetal
- Brass
- Tinned Bronze
- Others
- Vinyl Chloride
Clear

Threaded End Machining
- None
- Spherical
- With Pad
- Cone Point
Clear

Set Screw Flat Machining
- None
- Provided (1 Place)
- Provided (2 Places)
Images

Clear

Side Machined
- Not Provided
- Knurling
- Checker Knurled
- Dimple
- Diamond Cut
Images

Clear

Polygonal Shape, Type
- Triangular Shape
- Cross Shape
- Pentagon Shape
- Hexagonal Shape
- Heptagonal Shape
- Octagonal Shape
- Star-shaped
Images

Clear

T Shape, Type
- Bar
- Wing
Images

Clear

Additional Function
- Not Provided
- With Hex Socket
- With Cross Recess
- With Slitting
- Washer Integrated
- Fall-off Prevention
- Axial Bearing Built-in
- Cylindrical (With Counterbored Hole)
- Lock
- With Scale
- Others
Images

Clear

Tapped, Round Hole Machining
- Blind Bore
- Through
- Reamer Finishing
Images

Clear

Main Body, Surface Treatment
- None
- Trivalent Chromate
- Black Oxide
- Tumble Polishing
- Coating
- Shot Blasting
- Buff Polished + Chrome Plating
- Brushed Finishing
- Chrome Plating
- Electroless Nickel Plating
- Electrolytic Polishing
- Buffed
- Anodize
- Others
- Gloss chrome plated
Clear

Mounting Section, Surface Treatment
- None
- Trivalent Chromate
- Black Oxide
- Nitriding Treatment
- Nickel Plating
- Bright Chrome Plating
- Zinc Plating
- Chrome Plating
- Others
- Chromate
Clear

Brand	(2) (0) DAIMARU BYORA SEISAKUSHO (0) ESCO (2) GOSHO WORKS (0) HALDER (0) HILOGIK (0) IMAO CORPORATION (0) KONISHI (0) KONOE (0) KYOWA (0) MITSUBOSHI CI (0) NBK (0) RICHENGINEERING (4) RS Pro (0) SHIMIZU (0) SUGATSUNE (0) SUNCO (0) TAKIGEN (0) TRUSCO (0)
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Days to Ship	All Same day 1 Day(s) or Less 3 Day(s) or Less 4 Day(s) or Less 5 Day(s) or Less Others

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Until 31/03/2025

Plastic Knobs/Wingnut Knobs

MISUMI

Plastic Knobs/Wingnut Knobs
Plastic Knobs Screws are commonly used in various applications to secure, adjust, and control different mechanical devices. They offer a wide variety of sizes to choose from.
[Feature]
● Shape : T-shaped wing knobs
● Thread Size : M4, M5, M6, and M8
● Material :
Knobs - ABS (Mat Balck)
Screws - Male Thread (SWCH12A), Female Thread (Brass)
[Application]
Plastic Knobs Screws are commonly used in fastening, assembly, adjustment, clamping and so on

From: ฿ 113.75
Special Price
Days to Ship: Same day

Same day

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Three Lobed Plastic Knobs

MISUMI

Three Lobed Plastic Knobs
Knobs Screws are commonly used in various applications to secure, adjust, and control different mechanical devices. They offer a wide variety of sizes to choose from.
[Feature]
● Shape : Three Lobed Knobs
● Thread Size : M5 and M8
● Material :
Knobs - Phenol Resin
Screws - SUM22L
● Surface Treatment : Zinc Plating
[Application]
Knob Screws are commonly used in fastening, assembly, adjustment, clamping and so on

From: ฿ 51.00
Days to Ship: Same day

Same day

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Retaining Knob

RICHENGINEERING

A highly versatile fixed knob.
[Features]
·The lineup includes five types: M4, M5, M6, M8, and blind hole types.
·The shape of the handle makes it easy to grip and turn.
·The shape of the mounting part is a thread.
[Applications]
·Use it as a handle for the table height adjustment screw or when you want to fix the movement.

From: ฿ 213.31
Days to Ship: 43 Day(s)

43 Day(s)

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Triangle Knob

RICHENGINEERING

It is recommended for program change of equipment and for places where screws are frequently tightened or loosened.
[Features]
·Nominal diameter. Compatible with M4 to M10
·A wide range of lineup from 16 to 40⌀
[Applications]
・ Position adjustment of places that are frequently attached/detached

From: ฿ 213.31
Days to Ship: 43 Day(s)

43 Day(s)

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Large Diameter Knob

RICHENGINEERING

A standard knob with high versatility.

[Features]
·Lineup of three commonly used types: M6, M8, and M10
·Octagonal shape that is easy to grip and turn
·Mounting shape is male thread

[Applications]
Handles for adjusting the height of the table, etc.

From: ฿ 213.31
Days to Ship: 43 Day(s)

43 Day(s)

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Octagonal Knob

RICHENGINEERING

A standard knob with high versatility.

[Features]
·We have a lineup of three commonly used types: M4, M5, and M6.
·The triangular shape makes it easy to grip and turn.
·The shape of the mounting part is a thread.
[Applications]
·Handles for adjusting the height of the table, etc.

From: ฿ 213.31
Days to Ship: 43 Day(s)

43 Day(s)

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Phenolic Resin Knob, Male Thread EA948B-1

ESCO

【Product Specifications】
・Material-Knob： phenolic resin, Male threaded： SUM22L (unichrome plating)Female threaded： brass
・Screw…M5 x 9
・D…17
・H…14
・d…10

From: ฿ 189.35
Days to Ship: 6 Day(s)

6 Day(s)

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Phenolic Resin Knob, Male Thread EA948B-2

ESCO

【Product Specifications】
・Material-Knob： phenolic resin, Male threaded： SUM22L (unichrome plating)Female threaded： brass
・Screw…M6 x 10
・D…21
・H…17
・d…12

From: ฿ 202.52
Days to Ship: 6 Day(s)

6 Day(s)


Brand
Product Series
CAD
From
Days to Ship
Mounting Section Dia. d (mm) or Nominal Dia.
Mounting Section Type
Mounting Section, Length L(mm)
Main Body, Type
Main Body Material
Round Shape, Type
Mounting Section, Material
Threaded End Machining
Set Screw Flat Machining
Side Machined
Polygonal Shape, Type
T Shape, Type
Additional Function
Tapped, Round Hole Machining
Main Body, Surface Treatment
Mounting Section, Surface Treatment

	You can add up to 6 items per a category to the compare list.Compare Until 31/03/2025	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare
Brand	MISUMI	MISUMI	RICHENGINEERING	RICHENGINEERING	RICHENGINEERING	RICHENGINEERING	ESCO	ESCO
Product Series	Plastic Knobs/Wingnut Knobs	Three Lobed Plastic Knobs	Retaining Knob	Triangle Knob	Large Diameter Knob	Octagonal Knob	Phenolic Resin Knob, Male Thread EA948B-1	Phenolic Resin Knob, Male Thread EA948B-2
CAD	2D / 3D	2D / 3D
From	฿ 113.75 Special Price On Sale Until 31/03/2025	฿ 51.00	฿ 213.31	฿ 213.31	฿ 213.31	฿ 213.31	฿ 189.35	฿ 202.52
Days to Ship	Same day	Same day	43 Day(s)	43 Day(s)	43 Day(s)	43 Day(s)	6 Day(s)	6 Day(s)
Mounting Section Dia. d (mm) or Nominal Dia.	4 ～ 8	5	M4 ～ M8	M4 ～ M10	M6 ～ M10	M4 ～ M6	M5	M6
Mounting Section Type	Threaded / Tapped	Threaded	Threaded	Threaded	Threaded	Threaded	Threaded	Threaded
Mounting Section, Length L(mm)	15 ～ 25	20	10 ～ 25	10 ～ 25	-	10 ～ 20	-	-
Main Body, Type	T Shape	Polygonal Shape	Round Shape	Round Shape	Polygonal Shape	Polygonal Shape	Round Shape	Round Shape
Main Body Material	ABS	Phenol	Phenol	Phenol	Phenol	Phenol	Phenol	Phenol
Round Shape, Type	-	-	Cylindrical Shape	Clamp Shape	-	-	Mushroom Shape	Mushroom Shape
Mounting Section, Material	Steel / Brass	Steel	Steel	Steel	Steel	Steel	Others	Others
Threaded End Machining	None	None	-	-	-	-	-	-
Set Screw Flat Machining	None	-	-	-	-	-	-	-
Side Machined	-	-	Dimple	Knurling	Not Provided	Not Provided	-	-
Polygonal Shape, Type	-	Triangular Shape	-	-	Octagonal Shape	Octagonal Shape	-	-
T Shape, Type	Wing	-	-	-	-	-	-	-
Additional Function	Not Provided	Not Provided	Not Provided	Not Provided	Not Provided	Not Provided	Not Provided	Not Provided
Tapped, Round Hole Machining	Blind Bore	-	Blind Bore	Blind Bore	Blind Bore	-	-	-
Main Body, Surface Treatment	-	-	None	None	None	None	-	-
Mounting Section, Surface Treatment	Bright Chrome Plating	Bright Chrome Plating	Bright Chrome Plating	Bright Chrome Plating	Bright Chrome Plating	Bright Chrome Plating	Bright Chrome Plating	Bright Chrome Plating

Related Categories to Knob Screws

FAQ Knob Screws

Question: How do I properly install the knob screw?: Answer: Here are some example to install a Knob Screws tapped type
1. Prepare the Surface: Clean and clear the area where the knob screw will be installed.
2. Choose the Right Screw: Select a screw with the appropriate size and thread that matches the knob.
3. Mark the Location: Use a pencil to mark where the knob screw will go, ensuring proper alignment.
4. Create Pilot Holes (if needed): Use a drill to create small guide holes in the marked spots, if the material is hard.
5. Insert the Screw: Place the screw through the knob and into the pilot hole or surface.
6. Tighten the Screw: Use a screwdriver to turn the screw clockwise, securely fastening the knob in place.
7. Test the Knob: Check the knob's movement and stability to ensure proper installation.
8. Adjust if Necessary: If the knob feels loose, you may need to tighten the screw further.
Question: Type of knobs screw?: Answer: There are various types of knob screws designed for specific applications. Here are a few common types:
1. Round Knurled Thumb Screws: These have textured heads for better grip, often used in applications where a secure grip is essential.

2. Lobed Knobs: Have a lobed design for a comfortable grip, commonly found on industrial and mechanical equipment.

3. Ball Knobs: These have a spherical shape and are commonly used on levers or control mechanisms.

4. T-Knobs: Shaped like the letter "T," these knobs are simple to turn and are used in applications where frequent adjustments are needed.

5. Star Knobs: Featuring a star-shaped head for easy turning, often used in applications requiring frequent adjustments.

6. Mushroom Knobs: Shaped like a mushroom. It is used for cabinets, drawers, and doors, these knobs provide a comfortable grip for opening and closing
Question: How to choose the knob screw?: Answer: Here are some example how to choose the knob screw
1. Usage: Identify its purpose, such as indoor/outdoor and specific applications like machines, jig fixtures, doors, cabinets, etc.
2. Material: Match durability to the environment (stainless steel, aluminum, brass and plastic (eg., ABS, Nylon and so on).
3. Thread Type and Thread Size : Ensure screw matches knob (Threaded, Tapped) or Press fit. and the thread size is appropriate to install
4. Size: Select a knob head size that is appropriate for your intended use.
5. Head Type: Choose based on knob design (eg.,round, T Shape, Wing Shape, Polygon shape etc.).
6. Easy to install : Ensure easy installation and tightening.
7. Follow Guidelines: Check knob manufacturer's recommendations.
Question: What is the usage for knob screw?: Answer: The primary usage of a knob screw is to enable manual control, adjustment, or fastening in a wide range of applications. Here are additional examples of how knob screws are used:
1. Camera Tripods: Knob screws are used to secure the legs and adjust the height of camera tripods, aiding photographers in achieving stable shots.
2. HVAC Systems: Knob screws are used to control airflow direction and intensity in ventilation systems, enhancing indoor air quality and comfort.
3. Scientific Research Instruments: In laboratories, knob screws are employed to fine-tune the position of laser optics, ensuring precise experimental setups.
4. Automated Manufacturing: Knob screws play a role in industrial automation by adjusting the position of sensors.
Question: What is the difference of knob screw and door knob?: Answer: Knob Screw:
A knob screw is a type of fastener used to secure or adjust objects together. It consists of a threaded and a head. The head is designed for easy gripping and turning by hand. Knob screws are commonly used in applications where frequent adjustments or temporary fastening is required. They are often found in devices like clamps, jigs, and fixtures. The main purpose of a knob screw is to provide a manual way of securing two components together without the need for additional tools.

Door Knob:
A door knob, on the other hand, is a handle or knob attached to a door that allows people to open and close the door. It is usually mounted on a spindle that connects the knob on the outside of the door to a mechanism on the inside, allowing the door to be latched or unlatched. Door knobs come in various designs and materials, and they serve both functional and aesthetic purposes. They are an integral part of doors in buildings and structures

In summary,
A knob screw is a threaded fastener used for securing or adjusting objects together, often by hand.
A door knob is a handle attached to a door, allowing people to open and close the door, serving a functional and aesthetic purpose.