🔧 Product Overview: M3.5 High‑Type Knurled Thumb Screws – Aluminum Hand Grip Knob Bolts (DIN 464)
For applications requiring a tall, easy‑to‑grip head and tool‑less operation, these M3.5 high‑type knurled thumb screws are an excellent choice. Manufactured to DIN 464 standards, they feature a tall, round knurled head that provides excellent finger grip and leverage for hand tightening and loosening – no tools needed. Made from lightweight, corrosion‑resistant aluminum alloy, they are ideal for machine covers, jigs, fixtures, and DIY projects where frequent adjustments are required. Fully threaded with M3.5 coarse pitch (0.6mm), and available in various thread lengths (select from options). Available in packs of 1, 5, or 10 pieces.
✨ Why These High‑Type Knurled Thumb Screws Are a Workshop Favorite
-
High‑type round knurled head – Taller than standard thumb screws, providing more gripping surface and extra leverage for hand tightening.
-
DIN 464 standard – Precision manufacturing ensures consistent dimensions and reliable performance.
-
Lightweight aluminum alloy – Strong yet lightweight, corrosion‑resistant, and available in various anodized colors.
-
Tool‑less operation – Diamond knurl pattern gives you a secure, non‑slip grip – no screwdriver or wrench needed.
-
M3.5 metric thread – fully threaded – Standard coarse pitch (0.6mm). Threads run the entire length for maximum grip.
-
Flexible pack sizes – Choose from 1, 5, or 10 pieces to suit your project needs.
-
Wide applications – Machine covers, jigs and fixtures, 3D printers, camera rigs, electronics enclosures, and general DIY.
📏 Technical Specifications – M3.5 High‑Type Knurled Thumb Screws (DIN 464)
| Specification |
Details |
| Product Type |
High‑Type Knurled Thumb Screws (Hand Grip Knob Bolts) |
| Standard |
DIN 464 |
| Material |
Aluminum alloy |
| Thread Size |
M3.5 |
Thread Pitch |
0.6mm (metric coarse)
|
| Thread Type |
Fully threaded |
| Head Style |
High‑type round knurled head (tall profile, diamond knurl) |
| Drive Style |
Hand grip (toolless) |
| Finish |
Anodized (various colors available) |
| Pack Sizes Available |
1 piece, 5 pieces, 10 pieces |
| Length Measurement |
Under head – from underside of head to tip (head not included) |
❓ FAQs – M3.5 High‑Type Knurled Thumb Screws
🔸 What is the advantage of the high‑type (tall) head design?
The high‑type head is taller than standard knurled thumb screws, giving you more surface area for your fingers and better leverage. This makes it easier to apply torque by hand – especially useful when you need a secure hold or are working in tight spaces.
🔸 How is thread length measured? What lengths are available?
Thread length is measured from the underside of the head to the tip (head not included). We offer various thread lengths – please select your desired length from the dropdown options. Typical lengths range from 6mm to 30mm. For custom lengths, contact us.
🔸 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 M3.5 coarse: 0.6mm.
🔸 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 Black, Silver, Red, Blue, Gold, and Green. Colors may vary slightly due to lighting and photography.
🔸 Can I use these screws with nuts, or are they for tapped holes only?
These are standard machine screws – they work with matching M3.5 nuts or in pre‑tapped holes. For through‑hole applications, use a nut on the back side. The knurled head is designed for hand grip only – do not use tools on the knurling.
🔸 Are these screws magnetic? Will they affect sensitive electronics?
Aluminum is non‑magnetic, so these thumb screws will not interfere with sensitive electronics, hard drives, or magnetic sensors. They are completely safe for use in electronic equipment and medical devices.
