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$25.99
sourcing map M4x30mm Knurled Thumb Screws, 304 Stainless Steel Flat Head Thumb Screws Metric Diamond Knurled Head Bolts Grip Knobs Hand Tighten Thread Fasteners, 12mm Dia. 12 Pcs
★★★★★
$25.99
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About this item
- These diamond knurled thumb screws offer a versatile fastening solution for restoring lighting fixtures, lampshades, furniture, industrial machinery, home appliances, electronic devices, and various other applications requiring manual adjustment. Their diamond-textured grip design ensures aesthetic appeal and practical functionality across repairs, renovations, and professional maintenance tasks.
- This pack includes 10 Pcs of M4x30mm knurled thumb screws, crafted from durable 304 stainless steel. Each screw has a 12mm / 0.39" head diameter and 5mm / 0.2" head thickness, offering a robust clamping force. The thread pitch is 0.7mm / 0.03". The knurled surface ensures a non-slip grip.
- These screws are made of quality 304 stainless steel, which has higher corrosion resistance, rust-proof and anti-rust effect than ordinary screws, prolonged lifespan, are not easy to damage, and are more solid; Featuring a diamond knurled texture on the head, these screws provide enhanced grip for easy hand-tightening. The flat head design ensures a flush, secure fit, making them good for applications requiring a sleek appearance.
- Simply grip the knurled head and rotate by hand to tighten or loosen. The textured surface provides a secure hold, even in tight spaces. Use them to fasten components in appliances, instruments, or DIY projects where quick, tool-free adjustments are needed.
- Please confirm the thread size. For optimal performance, avoid over-tightening, which could stress the threads.
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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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