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$27.99
sourcing map 40 Pcs M4x25mm Knurled Thumb Screws, Carbon Steel Zinc Plated Flat Knurled Head Fully Threaded Screw Bolts Fasteners for Home, Machine
★★★★★
$27.99
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About this item
- These knurled thumb screws are widely used in mechanical equipment, communication industry, marine industry, automotive and lighting industries. They are reliable fasteners for various purposes. They are mainly used in DIY projects, electronic equipment, mechanical parts, decorative products, etc. These knurled screws are easy to install and can be firmly fixed on various components.
- Flat thumb screw, Thread Size: M4x25mm/M4x0.98inch(DxL); Head Size: 12x8mm/0.47x0.31inch(DxT); Material: Carbon Steel; Surface Treatment: Galvanized; Color: Silver; In the package of: 40 x Thumbscrew
- The knurled thumb screw is made of carbon steel with a zinc-plated surface. It has a beautiful appearance, good rust and oxidation resistance, wear resistance, no deformation, and a long service life. The thread is deep, the pitch is uniform, and the tightening force is strong. The flat head thumb screw has knurling on the surface, which can be easily installed and removed manually without tools.
- Fully threaded thumbscrews are easy to use. The knurled head thumb screws have a secure grip and a smooth, burr-free surface, making it easy to hand-tighten or loosen fasteners. Just hold the knurled head and turn the screw.
- Check the thumb screws regularly for wear or looseness, and replace if necessary to maintain performance. Please choose the appropriate type and size before purchasing.
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What customers say about Bigamart
10 Trustpilot reviews total, with 2 shown at a time.
Trustpilot
★★★★★
Excellent
4.5 average rating
S
Sigalit
🇮🇱 · January 2026
★★★★★
I wrote to Bigamart's customer support and they accompanied the process of reshipping the item until it finally arrived. I felt a genuine effort to solve the problem till it was finally solved.
V
Verified buyer
🇦🇺 · November 2025
★★★★★
The package was here in Australia from England in a few days — so quick! Something was missing and they refunded it straight away. Pretty happy with these guys.
Showing 1–2 of 10 reviews
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