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Plastic Thumb Nuts

Thumb nuts are a type of nut that can be tightened/removed by hand without the need for tools. They consist of a plastic knob head and a built-in metal insert nut, and can be quickly assembled and adjusted by gripping the knob with fingers.
  • Plastic Knob Thumb Nuts

  • PDM

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Features of Knurled Thumb Nut

Multi Colored Thumb Nuts Title:

China Suppliers M3 M5 M6 M8 Plastic Head Thumb Nuts plastic knurled thumb nuts colorful matte finish


Plastic Knob Thumb Nuts Introduction:

Core use: Used for occasions that require frequent disassembly, manual adjustment, insulation, scratch resistance, and aesthetics.

Plastic Knob

Material: PA66, PP, PE, ABS, POM, etc

PA66 (nylon 66) is the most commonly used material due to its high strength, wear resistance, and heat resistance.

ABS has good rigidity and a bright appearance, suitable for home appliances and equipment panels.

PP/PE is chemical resistant, low temperature resistant, and cost-effective.

POM (polyoxymethylene) has high hardness, low friction, and dimensional stability, and is used for precision adjustment


Surface: Roll pattern, vertical pattern, grid pattern, increase friction, easy to twist by hand

Shape: circular, star shaped, T-shaped, butterfly shaped, cylindrical head


Insert Nut

Material: Carbon steel, stainless steel (SS304/316)

Metric threads: M3, M4, M5, M6, M8

British thread: # 4-40, # 6-32, # 8-32, 10-24, 1/4-20

Height/Outer Diameter: Customized according to customer requirements, with a standard outer diameter of 10mm to 30mm.

Process: Injection molding, encapsulation, press fit, integrated molding;

triangle handle knob nut screw

Thread Size
D(mm) H(mm) d1(mm)
H1(mm)
M4/M5/M6 25 13 14 3
M5/M6/M8 31 13 16 2
M6/M8/M10 38 14 20 3

thumb nut nylon

Thread Size
D(mm) H(mm) d1(mm)
H1(mm)
M3/M4/M5 14 8 10 3
M4/M5/M6 18 9 11 3
M6/M8 25 12 19 5

thumb nut star knob

Thread Size
D(mm) H(mm) d1(mm)
H1(mm)
M4/M5/M6 27 7 13 4
M5/M6 35 10 14 8

plastic thumb nut

Thread Size
D(mm) H(mm) d1(mm)
H1(mm)
M6/M8 40 11 17 4

plastic bolt nut


Thread Size
D(mm) H(mm) d1(mm)
H1(mm)
M6/M8 48 11 17 8
M6/M8/M10/M12 65 16 20 13

plastic head flat thumb nut

T Head Thumb Female Nut Application:

Electronic devices, instruments, and chassis panels

Home appliances, speakers, monitor stands

Office equipment, medical equipment

Lighting fixtures, adjustable brackets, protective covers

Fitness equipment, furniture quick installation structure

Equipment that requires manual adjustment and frequent disassembly


black knob nut


Knurled Thumb Nuts Advantages & Features

Manual operation, quick installation, disassembly, and adjustment without the need for tools, improves assembly efficiency.

The insulated and non-conductive plastic casing provides good insulation and is suitable for electronic devices.

Corrosion and rust resistant plastics are acid and alkali resistant, moisture-proof, and suitable for humid/outdoor environments.

Comfortable to touch, does not harm hands, does not damage panels with sharp edges, and will not scratch the device casing.

The appearance is neat and beautiful, and can be made in black, white, gray, and color to enhance the texture of the product.

Customizable in size, color, and thread logo、Shape.

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