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uxcell Knurled Thumb Screws, M4x12mm Brass Shoulder Bolts Grip Knobs Fasteners, Nickel Plated 5Pcs

Free shipping on orders over $29.99

$8.49

$ 4 .99 $4.99

In Stock

1.Size:M3x6mm


About this item

  • [Thread Size] - Thread Diameter: M4; Thread Pitch: 0.7mm/ 0.03”; Rod Length: 12mm/ 0.47”; Thread Style: Fully Thread
  • [Screw Head] - Head Style: Round Knurled Head; Head Diameter: 9.5mm/ 0.37"; Head Thickness: 8mm/ 0.31". The larger the diameter of the thumb portion, the greater the clamping force that can be applied
  • [Material] - Made of brass with a nickel plated finish, this thumb screw Knob is good for needs requiring high appearance, has corrosion resistance, rust resistance, and long-lasting service
  • [Applications] - Widely used in the installation, maintenance, and fixing of various daily needs: such as light covers, musical instruments, mechanical assemblies, electronic equipment, communication equipment, ornamental products, and so on
  • [Easy to Use] - No tools are required. Knurled head thumb screws provide a solid grip and smooth surface, making it easier to tighten or loosen the fastener by hand. The screws shown in the picture may be larger, please confirm the size before placing an order to avoid buying the wrong one.



Product Description

Brass thumb screws

Feature:

  • Made of brass, this thumb screw Knob is good for needs requiring high appearance, has corrosion resistance, rust resistance, good wear resistance, high hardness, well-fastening function, and long-lasting service than other materials.
  • Applied in home appliances, communications industry, automotive industry, etc. Widely used in the installation, maintenance, and fixing of various daily needs: such as light covers, musical instruments, mechanical assemblies, electronic equipment, communication equipment, ornamental products, and so on.
  • No tools are required. Knurled head thumb screws provide a solid grip and smooth surface, making it easier to tighten or loosen the fastener by hand. The larger the diameter of the thumb portion, the greater the clamping force that can be applied.
  • Please pay attention to the size when ordering, some may be small, please check to avoid ordering wrong sizes.

Wide Application:

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Donald Kiiskila
August 16, 2025
I got these for a 3d printer project for a touchscreen USB-C monitor that has actual VESA mount holes. They fit perfectly and were long enough to go through the relatively thick 3d print. And, I have an extra in my screw box now just in case I somehow lose one!
Nrsmith
July 15, 2025
Works perfectly for what I needed!
Billy B
June 4, 2025
These thumbscrews are the correct size and length as advertised. Turns out I needed M2 not M3 but I see no reason to return them as always have need for small screws.
Jason d.
May 21, 2025
I use them to make an adjustable square with two rullers, Work perfect
Will Wagner
May 15, 2025
They look nice but the threads might be a bit oversize or the plating makes the threads not right, but after installing once they loosen up and are easy to use to adjust the item being secured.
LiteningKid
April 25, 2025
They are too short. Would have worked but The finger tightener is weird. It was below the hole so it was hard to reach. Can’t get a good grip on it to engage a thread. I kept them for future use on other projects. More expensive than the one I replaced it with and got more in quantity.
Works
March 12, 2025
Worked well
Kindle Customer
February 19, 2025
I used these to replace plastic thumbscrews that weren't tough enough for the job. They worked great.
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