🔩 Product Overview: M5 x 12mm Color Anodized Knurled Thumb Screws – Aluminium Alloy Hand Grip Knob Bolts (100pcs)
For tool‑less fastening that combines style and functionality, these M5 knurled thumb screws are an excellent choice. Made from lightweight, corrosion‑resistant aluminium alloy (6061) with a vibrant anodized finish, they offer a comfortable, slip‑resistant grip and a professional look. The knurled head allows for easy hand tightening and loosening – no screwdriver required. Fully threaded with M5 coarse pitch (0.8mm), and the 12mm thread length is measured under the head. Available in multiple anodized colors (please select your preference). Perfect for 3D printers, computer cases, RC vehicles, camera rigs, and any application where quick, tool‑less access is needed. Pack of 100 pieces – great for bulk builds or replacement.
✨ Why These Knurled Aluminium Thumb Screws Are a DIY Favorite
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Lightweight aluminium alloy (6061) – Strong yet lightweight. Anodized finish provides corrosion resistance and a vibrant, durable color.
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Knurled head for excellent grip – Diamond or straight knurl pattern ensures a secure, non‑slip grip even with oily or gloved hands.
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Tool‑less operation – No screwdriver or wrench needed. Ideal for frequent access panels, adjustments, and field maintenance.
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M5 metric thread – fully threaded – Standard coarse pitch (0.8mm). Threads run the entire 12mm length for maximum grip.
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12mm thread length (under head) – Perfect for panel thicknesses up to 10mm when used with nuts or threaded holes.
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Vibrant anodized colors – Available in multiple colors (e.g., Red, Blue, Black, Silver, Gold, etc.) – add a custom look to your projects.
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100 pieces per pack – Great value for bulk users, 3D printer enthusiasts, and repair shops.
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Wide applications – 3D printer bed leveling knobs, computer case thumbscrews, RC car body mounts, camera rigs, machine panels, and DIY projects.
📏 Technical Specifications – M5 Knurled Thumb Screws (100pcs)
| Specification |
Details |
| Product Type |
Knurled Thumb Screws (Hand Grip Knob Bolts) |
| Material |
Aluminium alloy (6061) with anodized finish |
| Thread Size |
M5 (metric coarse) |
| Thread Pitch |
0.8mm |
| Thread Length (under head) |
12mm (measured from underside of head to tip) |
| Total Length (including head) |
Approx. 18–20mm depending on head height |
| Head Style |
Knurled cylindrical / barrel shape |
| Drive Style |
Hand grip (toolless) |
| Finish |
Anodized (multiple colors available) |
| Quantity per Pack |
100 pieces |
❓ FAQs – Knurled Aluminium Thumb Screws
🔸 How is the length measured for these thumb screws?
Length is measured from the underside of the knurled head (the flat bearing surface) to the tip of the thread. The head itself is not included. So this M5 x 12mm screw has a 12mm long threaded shank – perfect for panel thicknesses up to 10‑11mm when using a nut or threaded hole.
🔸 Are these screws fully threaded? What is the thread pitch?
Yes – they are fully threaded from under the head to the tip. The thread pitch is standard M5 coarse: 0.8mm. This ensures compatibility with standard M5 nuts and tapped holes.
🔸 What colors are available?
We offer a range of anodized colors – please select your preferred color from the dropdown options when ordering. Common colors include Red, Blue, Black, Silver, Gold, and sometimes Green or Purple (availability varies). Contact us for specific color requests.
🔸 Will the anodized color wear off or fade?
Anodizing is an electrochemical process that bonds the color to the aluminium surface. It is durable and will not peel like paint. Under normal hand use, the color will remain vibrant for years. Heavy abrasion or contact with harsh chemicals may wear the finish, but typical finger tightening will not cause significant wear.
🔸 Can I use these screws outdoors?
Aluminium with anodized finish has good corrosion resistance for indoor and light outdoor use. For continuous saltwater or heavy industrial chemical exposure, stainless steel would be better. However, for general outdoor equipment, 3D printers in a garage, or RC cars, these are perfectly fine.
🔸 What applications are these 100‑piece packs best suited for?
These packs are ideal for 3D printer enthusiasts (bed leveling knobs, frame screws), computer case modders, RC hobbyists, camera rig builders, and repair shops. With 100 pieces, you have plenty for multiple projects or replacements. They also work well for machine access panels and electrical enclosures.
