🔧 Product Overview: 6#-32 UNC Flat Head Knurled Thumb Screws – Aluminum Alloy, 10mm & 20mm Lengths
For tool‑less fastening in PC cases, electronics enclosures, and light machinery, these 6#-32 UNC knurled thumb screws are a perfect choice. Made from 6061 aluminum alloy with a durable anodized finish, they feature a flat, diamond‑knurled head that provides a secure non‑slip grip for hand tightening and loosening – no screwdriver needed. The #6-32 thread is the standard size for many computer case side panels, hard drives, and expansion cards. Available in two thread lengths: 10mm and 20mm (measured under the head). Fully threaded with standard UNC coarse pitch (32 TPI). Ideal for PC modding, 3D printers, camera rigs, and general DIY applications.
✨ Why These Aluminum Knurled Thumb Screws Are a DIY Essential
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Flat knurled head for tool‑less grip – Diamond knurl pattern provides excellent finger traction for hand tightening and loosening – no tools required.
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High‑quality 6061 aluminum alloy – Lightweight, strong, and corrosion‑resistant. Anodized finish adds durability and a professional appearance.
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Standard 6#-32 UNC thread – Common imperial size for PC cases, electronics, and light machinery. Fully threaded with 32 threads per inch.
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Two length options: 10mm and 20mm – Choose the length that fits your panel thickness or assembly depth. Thread length measured under the head.
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Smooth, burr‑free workmanship – Neat threads, even force distribution, and high‑quality materials ensure anti‑corrosion and long service life.
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Wide applications – Machinery, precision molds, bearing assembly, PC cases, 3D printers, camera rigs, and general DIY.
📏 Technical Specifications – 6#-32 UNC Flat Head Knurled Thumb Screws
| Product Type |
Flat Head Knurled Thumb Screws (Hand Grip Bolts) |
| Material |
6061 Aluminum Alloy (anodized) |
| Thread Size |
6#-32 UNC (Unified National Coarse, 32 TPI) |
| Thread Type |
Fully threaded |
| Thread Lengths Available (under head) |
10mm, 20mm (select from options) |
| Length Measurement |
Under head – from underside of flat head to tip (head not included) |
| Head Style |
Flat head with diamond knurling |
| Drive Style |
Hand grip (toolless) |
| Finish |
Anodized (multiple colors available) |
| Tolerance |
±0.3mm |
❓ FAQs – 6#-32 UNC Knurled Thumb Screws
🔸 Will these screws fit my computer case?
Most standard PC cases use 6#-32 UNC threads for side panels, power supplies, and drive bays. The 10mm length is ideal for standard panel thickness (1‑2mm steel). The 20mm length works for thicker panels or when using nuts. Check your existing screws – if they are #6-32, these will fit perfectly.
🔸 How is thread length measured? Which length should I choose?
Thread length is measured from the underside of the flat head to the tip. For standard PC side panels (1‑2mm), 10mm is sufficient. For panels with nuts or thicker materials (up to 15mm), choose the 20mm length. Measure your material thickness and add 2‑3mm for proper engagement.
🔸 Are these screws fully threaded? What is the thread pitch?
Yes – they are fully threaded from under the head to the tip. 6#-32 UNC means 32 threads per inch (fine enough for precise adjustment).
🔸 Will the anodized color fade or wear off?
Anodizing is an electrochemical process that bonds the color to the aluminum surface. It is durable and will not peel like paint. Under normal hand use, the color will remain vibrant for years. Heavy abrasion may wear the finish, but typical thumb screw applications are gentle.
🔸 Can I use these screws with nuts, or are they for tapped holes only?
These are standard machine screws – they work with matching 6#-32 UNC 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 inside computers and near camera equipment.
