M3.5×8mm Aluminium Knurled Thumb Screws — Flat Head Hand-Grip Bolts for PC Case & Panels
M3.5×8mm Aluminium Knurled Thumb Screws — Flat Head Hand-Grip Bolts for PC Case & Panels
M3.5×8mm Aluminium Knurled Thumb Screws — Flat Head Hand-Grip Bolts for PC Case & Panels
M3.5×8mm Aluminium Knurled Thumb Screws — Flat Head Hand-Grip Bolts for PC Case & Panels
M3.5×8mm Aluminium Knurled Thumb Screws — Flat Head Hand-Grip Bolts for PC Case & Panels
Roll over image to zoom in Click on image to zoom
M3.5×8mm Aluminium Knurled Thumb Screws — Flat Head Hand-Grip Bolts for PC Case & PanelsM3.5×8mm Aluminium Knurled Thumb Screws — Flat Head Hand-Grip Bolts for PC Case & PanelsM3.5×8mm Aluminium Knurled Thumb Screws — Flat Head Hand-Grip Bolts for PC Case & PanelsM3.5×8mm Aluminium Knurled Thumb Screws — Flat Head Hand-Grip Bolts for PC Case & PanelsM3.5×8mm Aluminium Knurled Thumb Screws — Flat Head Hand-Grip Bolts for PC Case & Panels

M3.5×8mm Aluminium Knurled Thumb Screws — Flat Head Hand-Grip Bolts for PC Case & Panels

HomeDIYer
No reviews

By HomeDIYer®

Price:
$1.39 USD
Stock:
In stock (500 units), ready to be shipped

Payment & Security

Ach Direct Debit Amazon American Express Apple Pay Bancontact Diners Club Discover Google Pay iDEAL Wero Mastercard PayPal Shop Pay USDC Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Quantity Discount Promotion
🎯 BULK DISCOUNT: Buy More, Save More!
Buy 2 Items
5% OFF
Buy 4 Items
10% OFF
Buy 6 Items
15% OFF
✅ Auto-discount • 🔄 Mix & match
Expert

DIY Expert Support

Get fitment advice & recommendations

Mon-Fri, 8:30AM-8PM
WhatsApp WhatsApp Email
⚡
24-Hour Fast Ship
🚚
Arrives in 3-14 days
🌍
Global Reach
↩️
30-Day Returns
🌱 1 tree planted with every purchase

Description

 

M3.5×8mm Knurled Thumb Screws — Tool-Free Aluminium Flat Head Bolts for PC Cases & Panels

If you've ever reached for a screwdriver just to swap a PC side panel or reseat a drive bay cover, you know how quickly that friction adds up. These M3.5×8mm aluminium knurled thumb screws are built for builders, modders, and anyone who opens their case more than once a month — giving you fast, tool-free access every time.

Each screw is machined from aluminium alloy with a knurled flat head for a secure finger grip. The M3.5 metric thread measures 8mm (≈5/16") in length. Available in 10 anodized colors — Black, Silver, Golden, Royal Blue, Sky Blue, Red Wine, Pink, Green, Purple, and Brown & Orange — and in pack quantities of 1, 4, 10, 20, 50, or 100 pieces to suit single builds or workshop stock.

Typical use cases include PC case side panel retention, 5.25" drive bay covers, front I/O panel fastening, and DIY electronics enclosures where hand-tightened knurled thumb screws replace standard hex bolts for faster access.

ℹ️ Compatibility Note: These screws use an M3.5 metric thread. Most modern PC cases use M3 or #6-32 UNC threads for motherboard standoffs. Please verify your case panel thread specification before ordering. M3.5 is commonly found on older ATX panel fasteners and some drive bay covers.

✅ Key Features of These M3.5×8mm Knurled Thumb Screws

  • ✋Knurled Flat Head for Tool-Free Use — The wide, textured flat head provides enough grip surface to hand-tighten and finger-loosen without a screwdriver, ideal for frequent PC case access and tool-free builds.
  • 🔩M3.5×8mm Metric Thread — Precisely cut M3.5 thread at 8mm (≈5/16") length fits standard M3.5 panel threaded inserts found in many ATX cases and drive bay assemblies.
  • 🪶Lightweight Aluminium Alloy Construction — Aluminium keeps weight minimal compared to steel fasteners — a practical advantage in weight-conscious builds and portable enclosures.
  • 🎨10 Anodized Color Options — Anodized finish provides a consistent, wear-resistant color layer. Match your PC case accent, cable sleeve color, or RGB scheme with colors ranging from neutral Black and Silver to bold Royal Blue and Red Wine.
  • 📦Flexible Pack Quantities (1–100 pcs) — Order a single piece for a replacement, a 4-pack for one panel, or up to 100 pieces for workshop inventory or small-batch PC assembly projects.
  • 🛡️Natural Corrosion Resistance — Aluminium's oxide layer provides inherent resistance to rust in typical indoor environments, keeping your fasteners looking clean over repeated panel removal cycles.

📐 Technical Specifications — M3.5 Aluminium Knurled Thumb Screws

Thread Standard M3.5 (Metric)
Screw Length 8mm (≈5/16")
Head Style Flat / Knurled Hand-Grip
Drive Style Hand-tightened (no tool required)
Material Aluminium Alloy
Finish Anodized (color options available)
Available Colors Black, Silver, Golden, Royal Blue, Sky Blue, Red Wine, Pink, Green, Purple, Brown & Orange
Pack Quantities 1, 4, 10, 20, 50, 100 pcs
Thread Pitch See variant options / Contact us to confirm
Head Diameter See variant options / Contact us to confirm
Application PC case panels, drive bay covers, DIY enclosures
Country of Origin See variant options / Contact us to confirm
⚠️ Spec Confirmation: Thread pitch and exact head diameter are not listed on the packaging. If your application requires precise tolerances, please contact us before ordering to confirm specifications.

❓ Frequently Asked Questions

What length thumb screw do I need for my PC case panel?

These screws are M3.5×8mm — 8mm (≈5/16") in length. This is generally suitable for standard PC side panels and drive bay covers, which typically use sheet metal in the 0.8–1.5mm range. If your panel is unusually thick or uses a threaded insert with deep engagement, confirm the required thread depth before ordering.

How strong are aluminium thumb screws for securing PC panels?

Aluminium thumb screws are typically sufficient for light-duty panel retention — PC side panels, dust filters, and access covers. They are not intended for structural or high-torque applications. For heavy-duty enclosures or vibration-prone environments, a steel fastener is generally recommended.

Can these thumb screws be used outdoors or in humid environments?

Aluminium has natural oxidation resistance, making it more corrosion-resistant than uncoated steel in most indoor and mildly humid environments. For prolonged outdoor or marine exposure, additional protective measures are generally recommended. The anodized finish adds an extra layer of surface protection.

What thread standard do these use — are they compatible with standard PC motherboard standoffs?

These are M3.5 metric thread screws. Most modern PC cases use M3 or #6-32 UNC threads for motherboard standoffs — M3.5 is a different size and will not fit M3 or #6-32 threaded holes. M3.5 is typically found on older ATX panel fasteners and some drive bay covers. Always verify your case's thread specification before ordering.

Do I need any tools to install or remove these thumb screws?

No tools are required. The knurled flat head is specifically designed for hand-tightening and finger removal, making these ideal for tool-free PC builds and any application where you need frequent panel access without reaching for a screwdriver.

Which color should I choose for my build?

We offer 10 anodized color options: Red Wine, Pink, Golden, Royal Blue, Sky Blue, Black, Silver, Green, Purple, and Brown & Orange. Black and Silver are the most neutral choices for mixed builds. Bold colors like Royal Blue or Red Wine work well as accent fasteners in windowed cases with matching cable sleeves or RGB lighting.

What pack size should I order?

A standard ATX mid-tower typically uses 2–4 thumb screws per panel. The 4-pack is generally sufficient for a single side panel; the 10-pack covers a full build with spares. The 20, 50, and 100-packs are suited for workshop stock, PC modding projects, or small-batch assembly where having extras on hand saves time.

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

You may also like

Recently viewed