M3.5x6mm Aluminium Knurled Thumb Screws – Flat Head Hand-Grip Knob Bolts for PC Case
M3.5x6mm Aluminium Knurled Thumb Screws – Flat Head Hand-Grip Knob Bolts for PC Case
M3.5x6mm Aluminium Knurled Thumb Screws – Flat Head Hand-Grip Knob Bolts for PC Case
M3.5x6mm Aluminium Knurled Thumb Screws – Flat Head Hand-Grip Knob Bolts for PC Case
M3.5x6mm Aluminium Knurled Thumb Screws – Flat Head Hand-Grip Knob Bolts for PC Case
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M3.5x6mm Aluminium Knurled Thumb Screws – Flat Head Hand-Grip Knob Bolts for PC CaseM3.5x6mm Aluminium Knurled Thumb Screws – Flat Head Hand-Grip Knob Bolts for PC CaseM3.5x6mm Aluminium Knurled Thumb Screws – Flat Head Hand-Grip Knob Bolts for PC CaseM3.5x6mm Aluminium Knurled Thumb Screws – Flat Head Hand-Grip Knob Bolts for PC CaseM3.5x6mm Aluminium Knurled Thumb Screws – Flat Head Hand-Grip Knob Bolts for PC Case

M3.5x6mm Aluminium Knurled Thumb Screws – Flat Head Hand-Grip Knob Bolts for PC Case

HomeDIYer
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By HomeDIYer®

Price:
$1.35 USD
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In stock (500 units), ready to be shipped

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Description

 

M3.5x6mm Knurled Thumb Screws — Tool-Free Panel Fasteners for PC Cases

If you've ever fumbled for a screwdriver just to swap a side panel, you know how frustrating standard case screws can be. PC builders, modders, and home lab enthusiasts who frequently access their systems need a faster, cleaner solution — and that's exactly what these M3.5x6mm knurled thumb screws deliver.

Each screw features an M3.5 metric thread with a 6mm (approximately 1/4") length, machined from lightweight aluminium and finished with an anodized color coating. The flat knurled head provides a wide, textured grip surface for secure hand-tightening without any tools. Available in 10 anodized colors — Red Wine, Pink, Golden, Royal Blue, Sky Blue, Black, Silver, Green, Purple, and Brown & Orange — and in pack quantities of 1, 4, 10, 20, 50, or 100 pieces.

These hand-grip knob bolts are ideal for PC case side panel retention, computer chassis assembly, and DIY electronics enclosures where tool-free access is a priority. They also work well for custom PC builds where color-matched fasteners are part of the aesthetic, and for small electronics projects requiring lightweight M3.5 metric fasteners.

ⓘ Compatibility: Designed for M3.5 threaded standoffs found in most standard ATX, Micro-ATX, and Mini-ITX PC cases. Verify your case thread specification before ordering.

✅ Key Features of These M3.5 Knurled Thumb Screws

  • ✋Tool-Free Hand Tightening — The knurled flat head provides a textured grip surface that lets you finger-tighten and loosen panel screws without reaching for a screwdriver, making frequent case access fast and effortless.
  • ⚖Lightweight Aluminium Construction — Machined from aluminium alloy, these thumb screws add minimal weight to your build while offering adequate strength for panel retention and light-duty fastening applications.
  • 🌈10 Anodized Color Options — Choose from Red Wine, Pink, Golden, Royal Blue, Sky Blue, Black, Silver, Green, Purple, or Brown & Orange to match or accent your PC build's color scheme. The anodized finish also adds surface protection.
  • 📦Flexible Pack Quantities — Available in 1, 4, 10, 20, 50, and 100-piece packs, so whether you need a single replacement or a bulk supply for multiple builds, you can order exactly what you need.
  • 🔍Standard M3.5 Metric Thread — Compatible with the M3.5 threaded standoffs used in the vast majority of desktop PC cases, ensuring a reliable fit without thread-stripping risk when installed by hand.
  • 🏭Flat Head Profile — The low-profile flat head sits flush against panel surfaces, avoiding interference with adjacent components and maintaining a clean, finished look on your case exterior.

📐 Technical Specifications — M3.5 Knurled Thumb Screws

Thread Size M3.5
Screw Length 6mm (approximately 1/4")
Head Style Flat / Knurled (hand-grip)
Drive Style Thumb / Finger (tool-free)
Material Aluminium alloy
Finish Anodized (color options available)
Available Colors Red Wine, Pink, Golden, Royal Blue, Sky Blue, Black, Silver, Green, Purple, Brown & Orange
Pack Quantity 1 / 4 / 10 / 20 / 50 / 100 pcs (see variant options)
Thread Standard Metric (M3.5)
Typical Application PC case side panel retention, electronics enclosures
Country of Origin See variant options
⚠ Note: Thread pitch and exact head diameter are not listed on packaging. If your application requires confirmed specifications beyond those listed above, please contact us to confirm before ordering.

❓ Frequently Asked Questions

How do I choose the right screw length for my PC case panel?

For most standard PC case side panels, a 6mm (approximately 1/4") length is typically sufficient to engage the threaded standoff without bottoming out. Measure your panel thickness and standoff depth before ordering. If your panel is thicker than average, consider a longer variant.

What thread standard do these thumb screws use?

These screws use an M3.5 metric thread, which is the standard thread size used on the vast majority of ATX, Micro-ATX, and Mini-ITX PC cases for panel retention. Always verify your case’s thread spec before ordering to ensure compatibility.

Are these thumb screws strong enough to hold a PC side panel securely?

Aluminium thumb screws are generally suitable for light-duty panel retention applications such as PC case side panels, where hand-tightening force is sufficient. They are not intended for high-torque or structural load-bearing applications. For those use cases, steel fasteners are typically recommended.

Can these screws be used outdoors or in humid environments?

Aluminium has natural oxidation resistance, making it more corrosion-resistant than plain steel in mildly humid indoor conditions. However, these screws are primarily designed for indoor electronics use. For outdoor or high-moisture environments, additional protective measures are generally recommended.

Do the colors affect the material or function of the screws?

No. The color finish is an anodized coating applied to the aluminium surface. All color variants share the same M3.5x6mm specification and hand-grip knurled flat head design. The anodizing also adds a thin layer of surface protection against minor abrasion.

How many screws do I need for a typical PC build?

Most ATX cases use 2–4 thumb screws per side panel, so a 4-pack or 10-pack is typically enough for a single build. If you’re building multiple systems or want spares on hand, the 20-pack or 50-pack offers better per-unit value.

Can I tighten these screws without any tools?

Yes. The knurled flat head is specifically designed for finger-tightening. The textured grip pattern allows you to apply adequate torque by hand for panel retention without needing a screwdriver, making it ideal for tool-free PC case access.

🛒 Select your color and pack quantity above, then add to cart — ships from our US warehouse.

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