Black Thumb Screws M4s of 2025
Best Choice1
JOJOCY100PCS Carbon Steel Threaded Knurled Thumbscrew Knurled Knobs Monitor Mounting Screws Black Round Clamping Screws Grip Knobs Thumb Screw M4 x 10 mm
Main highlights- Warm notice: it is recommended that you need washers as gaskets when installing some monitors to prevent affect to the computer monitor; The length of the screw part is 10 mm, which may bottom out on some computer monitors; You just need a layer of buffer to prevent direct contact in some cases
- Quality material: the male thread knurled clamping knobs are made of quality carbon steel, with good hardness, strength, corrosion resistance and wear resistance; It is a fastening accessory that can be applied for a long time and could be reusable for most different purposes
- Nice craftsmanship: the surface of the grip thumb screw on type round head is smooth, the thread is neat and uniform, without burrs, making the installation effect more tight
- Easy to Use: These handle knob thumbscrews are screw-on design, which is simple and easy for you to install. They have smooth and clean surface, thus making them more convenient to use.
- Ample quantity: you will receive 100 pieces M4 x 10 mm threaded knurled thumbscrews, which can be installed in any place you need, and meet your daily use and replacement
9.9Exceptional
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Value for Money2
GenericM4 Light Saber Retention Screws Black Knurled Thumb Screw Bolt 4mm x 8mm 4 Pack
Main highlights- M4 x 8mm Light Saber Retention Screws Black Knurled Thumb Screw Bolt
9.8Exceptional
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3
MECCANIXITYMECCANIXITY 12pcs M4x8mm Knurled Thumb Screw Computer Case Threaded Hand Tighten Screws Aluminum Alloy for PC Case, Black
Main highlights- Select screws of appropriate specifications, insert the screws into the screw holes at the corresponding positions, and tighten the screws by hand or with tools.
- Quality Material: Our thumb screws are made of aluminum alloy, which is strong and durable. Knurled hand screw surface is anodized, with bright and beautiful appearance, corrosion resistance, long service life, suitable for indoor and outdoor use. Easy to Install: Our thumbscrew has an easy-grip head that can be easily installed by hand like a traditional thumbscrew. Knurled hand screw has a knurled surface that provides extra grip for quick installation and easy release by hand.
- Please allow slight differences in the color and size of the products due to different shooting environment and measuring tools.
- PC Case Thumb Screw;Color: Black;Threads Diameter: M4;Thread Length: 8mm / 0.31 Inch;Body Size: 12x12x18 mm / 0.47"x0.47"x0.71" (L*W*H);Material: Aluminum Alloy;Package Content: 12Pcs Computer Case Thumb Screw
- Our products are thumb screws with knurled design, which have the advantages of easy installation, durability, beauty and reusability. Knurled thumb screws are suitable for products such as computer cases, hard drives, power supplies, etc. that require manual tightening.
9.7Exceptional
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4
Cilky10pcs M3 M4 Black Carbon Steel Flat Head Thumb Screw Hand Tighten Computer Screw Metal Screws(6mm,M4 10pcs)
Main highlights- Versatile and Reliable - our Screw is an essential addition to your toolkit, can be used for a variety of projects in homes, workplaces, furniture and courtyards, perfect for your daily life use.
- Size -- M3, M4
- Quantity -- 10pcs
- Material -- Black Carbon Steel
- Length -- 6-60mm
- Item -- Flat Head Thumb Screw Hand
9.6Exceptional
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5
Cilky5pcs M2 M2.5 M3 M4 Black Carbon Steel Thumb Screw Plain Type Metric Knurled Head Manual Adjustment Screw Metal Screws(12mm,M2 5pcs)
Main highlights- Versatile and Reliable - our Screw is an essential addition to your toolkit, can be used for a variety of projects in homes, workplaces, furniture and courtyards, perfect for your daily life use.
- Size (Optional) -- M2 (Thread Diameter 2mm) , M2.5 (Thread Diameter 2.5mm) , M3 (Thread Diameter 3mm) , M4 (Thread Diameter 4mm)
- Quantity -- 5pcs
- Material -- Black Carbon Steel
- Length -- 5mm , 6mm , 8mm , 10mm , 12mm
- Item -- Knurled Head Thumb Screw
9.5Excellent
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6
uxcelluxcell Computer PC Case M4x16mm Shoulder Type Knurled Thumb Screw Black 4pcs
Main highlights- Weight: 12g; Product Name: Thumb Screw
- Variatation Theme: Color
- Thread Size: M4 x 16mm/0.16" x 0.63"(D*L); Total Length: 26mm/1.02"
- Thread Pitch: 0.7mm; Color: Black
- Material: Aluminum Alloy; Package Content: 4pcs x Thumb Screw
9.2Excellent
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7
HSCRSTARHSCRSTAR Black Carbon Steel Flat Head Thumb Screw Hand Tighten Computer Screws M3 M4 M5 (M4x12mm(20pcs))
Main highlights- Thread pitch: 0.5mm(M3) / 0.7mm(M4) / 0.8mm(M5)
- Thread diameter: 3mm(M3) / 4mm(M4) / 5mm(M5)
- Size=thread diameter(d) x thread length(L)
- Material: Carbon Steel
9.1Excellent
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8
Jinshining10Pcs Black M4 Thumb Screws, M4 X 10mm Screw, Monitor Mount Screws Knurled Thumbscrews with Carbon Steel Thread, Mechanical Door Fastening Elements, Clamping Screw with Round Head, Round Screws
Main highlights- VERSATILE USE: Ideal for monitor mounts, door fastening, and various mechanical clamping applications requiring tool-free adjustment
- THREAD TYPE: M4 metric thread design ensures precise fit and secure connection for compatible mounting applications
- SPECIFICATIONS: M4 x 10mm thumbscrews made of durable carbon steel with black finish, perfect for monitor mounting and mechanical applications
- PACKAGE CONTENTS: Set includes 10 pieces of knurled thumbscrews with round heads for easy manual tightening
- DESIGN FEATURES: Knurled pattern on head provides enhanced grip for comfortable finger tightening without need for additional tools
8.8Very Good
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9
uxcelluxcell 20pcs M4 x 20mm Male Thread Knurled Knobs, Thumb Screws Clamping Knobs Grip 14mm Plastic Round Head Hand Knobs Thumbscrews, Black
Main highlights- Tips: Always tighten the knurled knob securely to prevent any movement of the fixed assembly. Do not over-tighten the knob as this may damage or strip the threads in the mating assembly. Replace the knob if necessary.
- Knurled Clamping Knobs: Thread Size: M4 (0.7mm Pitch); Thread Length: 20mm / 0.79"; Head Diameter: 14mm / 0.55"; Total Length: 32mm / 1.26"; 20pcs x Knurled Knobs. Safe and secure knurled thumb screws for the ultimate in adjusting and tightening control.
- Hand Knob with Stud: The zinc plated carbon steel threaded stud on the knob ensure durability, strength, functionality and wear resistance. The tightly-in metal threaded stud can securely join components together, easy to install, suitable for various applications.
- Features: The knurled texture on the surface provides better grip, making it easier to tighten or loosen the knob. Threads are neat and clear, the force is even and deep, not easy to slip, and there are no burrs. Durable plastic knobs provide a smooth and beautiful surface as well as a comfortable grip.
- Applications: Knurled knobs are commonly used in applications that require frequent adjustments or tightening. Widely used in lathes, drill presses, sawing machines, packaging and woodworking machinery, printing, instrument and industrial equipment, and fixtures.
8.6Very Good
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10
uxcelluxcell 6pcs Knurled Clamping Knobs M4 x 20mm Metric Zinc Plated Carbon Steel Male Thread Thumb Screw on Type 16mm Plastic Round Head Threaded Hand Bolt Stud Knobs Black
Main highlights- Zinc plated carbon steel threaded stud enhances the durability, making it resistant to wear, corrosion and rust. The tightly-in metal insert ensures optimal durability and functionality, easy to install.
- Standard Thread Size: M4 (0.7mm Pitch); Thread Length: 20mm / 0.79"; Knurled Head Diameter: 16mm / 0.63"; Total Height: 30mm / 1.22". The screws are neat and clear, the force is even, and it is not easy to slip.
- Safe and secure knurled thumb screws for the ultimate in adjusting and tightening control. Great for saw, drill press, lathe and routing jigs, fixtures, packaging machinery, printing equipment, woodworking machinery and equipment.
- Hand stud knobs with thermoset plastic knobs provide comfortable hand grip. The clamping knob is tight, sturdy and durable, with a smooth and beautiful surface.
- Always tighten the knurled knob securely to prevent any movement of the fixed assembly. Do not over-tighten the knob as this may damage or strip the threads in the mating assembly. Replace the knob if necessary.
8.3Good
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