Thumb Screws M4 Stainless Steels of 2025
Best Choice1
SeeRaphee(20 Pieces) M4x10 Flat Knurled Head Screw 304 Stainless Steel Thumb Screws Bolts Fastener
Main highlights- The surface of this product is polished. It's smooth and burr-free. The threads are clear and smooth.
- Size:M4x10mm;Package:20Pieces
- It is widely used in electronics industry, machinery industry,automotive industry and home improvement.
- It has better rust and corrosion resistance compared to regular stainless-steel material. It is sturdy and durable, making it suitable for outdoor and humid environments.
- Flat knurled head thumb nuts; material: 304 stainless steel
9.9Exceptional
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Value for Money2
SCXCLYSCXCLY 30pcs Knurled Thumb Screws,M4 Flat Knurled Head Fully Threaded Thumb Screws Bolts Assortment Kit (6 Sizes), 304 Stainless Steel (Silvery)
Main highlights- ☞You can easily use it in home appliances, electrical appliances, machinery, instruments etc.
- ☞Thumb screws(single layer step), flat knurled head fully threaded.
- ☞The thread texture of the product is clear and the surface is flat.
- ☞Screw has a flat head knurled surface, can provide better grip and make it easier to tighten or loosen screws.
- ☞Made of 304 stainless steel, are rust and corrosion-resistant.
9.7Exceptional
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3
uxcelluxcell M4x10mm Knurled Thumb Screws, 5pcs 304 Stainless Steel Flat Knurled Head Fully Threaded Thumb Screws Bolts Grip Knobs Fasteners
Main highlights- Thread Size: M4 x 10mm / M4 x 0.39"(D*L); Thread Pitch: 0.7mm; Head Size: 12 x 6mm / 0.47" x 0.24"(D*T); Package Content: 5pcs x Knurled Thumb Screws
- Material: Knurled thumb screws are made of 304 stainless steel, are rust and corrosion-resistant, durable materials that can be used indoors and outdoors, wear resistance, good fastening function.
- Feature: The thumb screw has a Flat head knurled surface, which provides a better grip and makes it easier to tighten or loosen the screw.
- Application: Knurled head thumb screws are widely used in home appliances, electrical appliances, machinery, instruments and other DIY projects. They can be used to fix panels, furniture, lampshades, musical instruments, mechanical components, electronic equipment, communication equipment, decorative products, etc.
- Advantage: Thumb screws can be installed and fastened without any tools, which is convenient. The larger the diameter of the thumb portion, the greater the clamping force that can be applied.
9.4Excellent
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4
uxcelluxcell M4x8mm Knurled Thumb Screws, 5pcs 304 Stainless Steel Flat Knurled Head Thumb Screws Bolts with Shoulder Grip Knobs Fasteners
Main highlights- Thread Size: M4 x 8mm / M4 x 0.31"(D*L); Thread Pitch: 0.7mm; Head Size: 12 x 8mm / 0.47" x 0.31"(D*T); Package Content: 5pcs x Knurled Thumb Screws
- Material: Knurled thumb screws are made of 304 stainless steel, are rust and corrosion-resistant, durable materials that can be used indoors and outdoors, wear resistance, good fastening function.
- Feature: The thumb screw has a flat knurled shoulder head, which provides a better grip and makes it easier to tighten or loosen the screw.
- Application: Knurled head thumb screws are widely used in home appliances, electrical appliances, machinery, instruments and other DIY projects. They can be used to fix panels, furniture, lampshades, musical instruments, mechanical components, electronic equipment, communication equipment, decorative products, etc.
- Advantage: Thumb screws can be installed and fastened without any tools, which is convenient. The larger the diameter of the thumb portion, the greater the clamping force that can be applied.
9.3Excellent
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5
uxcelluxcell Computer PC Case M4 x 10mm Stainless Steel Flat Head Knurled Thumb Screw 15pcs
Main highlights- Weight: 61g; Color: Silver Tone
- Thread Size: M4 x 10mm/0.16" x 0.4"(D*L); Total Length: 17mm/0.67"
- Thread Pitch: 0.7mm
- Product Name: Thumb Screw; Material: Stainless Steel
- Package Content: 15pcs x Thumb Screw
9.1Excellent
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6
MECCANIXITYMECCANIXITY 4 PCS M4 x 30mm Flat Knurled Head Thumb Screws,304 Stainless Steel Fully Threaded Thumbscrew Bolts Fasteners for Lighting Household Appliances Electronic Equipment
Main highlights- Screws are available in a variety of models and sizes. Please select the appropriate type and size before purchasing.
- Knurled thumb screws are widely used in lighting industry, home appliances, communication industry, electronic equipment and other DIY projects. Mainly used to repair vintage lamps, lampshades, mechanical parts, fix panels.
- Knurled head thumb screws are made of 304 stainless steel, which is corrosion-resistant, rust-proof, and has a long service life. It can withstand wear, ensure uniform force and is not easy to slip. The knurled texture on the surface provides a better grip, making it easier to tighten or loosen the knob.
- Fully Threaded Thumbscrew is easy to use and does not require tools. Knurled head thumb screws have a secure grip and smooth surface, making it easier to tighten or loosen fasteners by hand. Just hold the knurled head and turn the screw.
- Flat thumb screw thread size: M4 x 30mm/M4 x 1.2inch(DxL),head size: 12 x 8mm/0.47 x 0.31inch(DxL),thread pitch: 0.7mm,material: 304 stainless steel,color: Silver,in the package of: 4 x thumbscrew
9.0Excellent
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7
FoyoramKnurled Thumb Screws High Type M4 Stainless Steel 10 pcs (M4 x 25 mm)
Main highlights- Thread diameter: 4.0 mm
- Thread Length (L): 6.0 mm/8.0 mm/10.0 mm/12.0 mm/14.0 mm/16.0 mm/20.0 mm/25.0 mm/30.0 mm/35.0 mm
- Pack of 10 pieces
- Material: Stainless Steel
- M4 Knurled Thumb Screw High Type
8.9Very Good
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8
WokapeWokape 35Pcs M4 Knurled Thumb Screw Kit, M4x 8/10/12/16/20/25/30MM Nickel Plated 304 Stainless Steel Knurled Thumbscrew Flat Knurled Fully Threaded Bolts(Single Layer Step) Grip Knobs Fasteners for PC
Main highlights- 【Nickel-Plated Stainless Steel】: Our flat knurled thumb screws are made of 304 Stainless Steel with a nickel-plated surface, featuring durability, wear resistance, and robustness. They are resistant to rust and discoloration, providing the screws with an extended service life.
- 【Knurled Thumb Screw】: The M4 knurled thumb screw kit contains 8MM thumb screws, 10MM thumb screws, 12MM thumb screws, 16MM thumb screws, 20MM thumb screws, 25MM thumb screws, 30MM thumb screws, each size is 5pcs, 35pcs totally. Plenty of quantities and different sizes to meet your needs.
- 【Easy to Use】: No tools required. Flat knurled screws are easy and simple to use. Thumb screws with delicate knurling and thread design not only make them more beautiful, but also help to increase the friction and grip, no additional tools are needed to tighten them.
- 【Widely Application】: These grip knobs fasteners are widely used in medical equipment, communication equipment, electronic equipment, mechanical components, home appliances, furniture, lampshades, musical instruments and other DIY projects.
- 【Various Sizes】 ：In the M4 knurled thumb screws kit, We have prepared 8MM/0.31", 10MM/0.4", 12MM/0.47", 16MM/0.63", 20MM/0.79", 25MM/1", 30MM/1.2", 7 size fully thread knurled screws for you, you can free choose the products you need according to your needs.
8.8Very Good
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9
uxcelluxcell® Computer PC Case M4 x 30mm Stainless Steel Flat Head Knurled Thumb Screw 6pcs
Main highlights- Weight: 34g; Color: Silver Tone
- Thread Size: M4 x 30mm/0.16" x 1.2"(D*L); Total Length: 37mm/1.5"
- Thread Pitch: 0.7mm
- Product Name: Thumb Screw; Material: Stainless Steel
- Package Content: 6pcs x Thumb Screw
8.6Very Good
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10
HirtuOtter12 pcs M4 x 10 Knurled Thumb Screws 304 Stainless Steel, Flat Head with Shoulder Grip, for 3D Printers/Electronics/Machinery
Main highlights- Multi-Application Scenarios: Perfect for 3D printer components, telescope eyepieces, battery locks, beach umbrella holders, and machinery adjustments.
- Knurled Shoulder Grip & Flat Head Design: Easy hand-tightening without tools; the shoulder grip prevents over-tightening and ensures a secure hold.
- HirtuOtter Support Promise: We listen! Contact our 24/7 customer service for pre-sale inquiries or post-purchase support.
- Durable 304 Stainless Steel:Corrosion-resistant and rust-proof, designed for long-term use in workshops, labs, or outdoor environments.
- Convenience: Includes 12 pcs screws for replacements or multiple projects.
8.5Good
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