M2 M2.5 Aluminum Knurled Thumb Screws – Flat Hand Grip, 10 Colors
M2 M2.5 Aluminum Knurled Thumb Screws – Flat Hand Grip, 10 Colors
M2 M2.5 Aluminum Knurled Thumb Screws – Flat Hand Grip, 10 Colors
M2 M2.5 Aluminum Knurled Thumb Screws – Flat Hand Grip, 10 Colors
M2 M2.5 Aluminum Knurled Thumb Screws – Flat Hand Grip, 10 Colors
M2 M2.5 Aluminum Knurled Thumb Screws – Flat Hand Grip, 10 Colors
M2 M2.5 Aluminum Knurled Thumb Screws – Flat Hand Grip, 10 Colors
M2 M2.5 Aluminum Knurled Thumb Screws – Flat Hand Grip, 10 Colors
M2 M2.5 Aluminum Knurled Thumb Screws – Flat Hand Grip, 10 Colors
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M2 M2.5 Aluminum Knurled Thumb Screws – Flat Hand Grip, 10 ColorsM2 M2.5 Aluminum Knurled Thumb Screws – Flat Hand Grip, 10 ColorsM2 M2.5 Aluminum Knurled Thumb Screws – Flat Hand Grip, 10 ColorsM2 M2.5 Aluminum Knurled Thumb Screws – Flat Hand Grip, 10 ColorsM2 M2.5 Aluminum Knurled Thumb Screws – Flat Hand Grip, 10 ColorsM2 M2.5 Aluminum Knurled Thumb Screws – Flat Hand Grip, 10 ColorsM2 M2.5 Aluminum Knurled Thumb Screws – Flat Hand Grip, 10 ColorsM2 M2.5 Aluminum Knurled Thumb Screws – Flat Hand Grip, 10 ColorsM2 M2.5 Aluminum Knurled Thumb Screws – Flat Hand Grip, 10 Colors

M2 M2.5 Aluminum Knurled Thumb Screws – Flat Hand Grip, 10 Colors

HomeDIYer
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Price:
$2.03 USD
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In stock (500 units), ready to be shipped

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Description

 

M2 & M2.5 Aluminum Knurled Thumb Screws — Tool-Free Fastening in 10 Anodized Colors

Reaching for a screwdriver every time you open an enclosure, swap a panel, or adjust a jig gets old fast. Whether you're a maker building a Raspberry Pi case, a technician maintaining rack equipment, or a hobbyist assembling a custom frame, M2 M2.5 aluminum knurled thumb screws let you fasten and release panels by hand — no tools required, no stripped heads, no frustration.

Each screw features a flat knurled head for a secure finger grip and a fully threaded metric shank. Available in four size combinations — M2×4mm (≈5/32"), M2.5×4mm (≈5/32"), M2.5×12mm (≈15/32"), and M2.5×15mm (≈19/32") — and ten anodized colors including Black, Silver, Golden, Blue, Sky Blue, Green, Purple, Redwine, Peach, and Brown Orange. Sold in packs of 1, 2, 5, or 10 pieces.

Typical use cases include electronics enclosure panel retention, SBC (Raspberry Pi, Jetson Nano) standoff fastening, 3D printer frame assembly, RC model body mounting, and DIY jig or fixture clamping — anywhere a hand-tighten knurled bolt saves time and adds a clean, color-coded look.

🔩 Compatibility: Metric thread only — M2 (pitch 0.4mm) and M2.5 (pitch 0.45mm). Not compatible with imperial (UNC/UNF) threaded holes. Verify your mounting hole spec before ordering.

✅ Key Features of These Aluminum Knurled Thumb Screws

  • ✋Flat Knurled Head Design — The wide, textured flat head provides a comfortable finger grip for hand-tightening without tools, ideal for frequently accessed panels and enclosures.
  • 🎨10 Anodized Color Options — Anodized finish in Black, Silver, Golden, Blue, Sky Blue, Green, Purple, Redwine, Peach, and Brown Orange allows color-coding by zone, channel, or assembly stage.
  • ⚖️Lightweight Aluminum Construction — Aluminum alloy body keeps weight minimal — a practical advantage in weight-sensitive builds like drones, RC models, and portable electronics enclosures.
  • 📐Four Size Combinations — M2×4mm, M2.5×4mm, M2.5×12mm, and M2.5×15mm cover a range of panel thicknesses and thread engagement depths for thin-panel to medium-depth applications.
  • 🔄Fully Threaded Shank — Full thread engagement along the shank length allows flexible positioning in blind holes and through-hole assemblies, commonly used in 3D printer frame fastening and jig fixtures.
  • 📦Flexible Pack Sizes — Available in 1, 2, 5, or 10-piece packs so you can order exactly what your project needs — from a single replacement to a full set for a multi-point enclosure.

📐 Technical Specifications — Aluminum Knurled Thumb Screws

Thread Standard Metric (ISO)
Available Thread Diameters M2, M2.5
Available Lengths 4mm (≈5/32"), 12mm (≈15/32"), 15mm (≈19/32")
Thread Pitch — M2 0.4mm (standard metric coarse)
Thread Pitch — M2.5 0.45mm (standard metric coarse)
Head Style Flat knurled (hand-grip thumb head)
Drive Style Hand-tighten (no tool drive)
Material Aluminum alloy
Finish Anodized (10 colors)
Color Options Black, Silver, Golden, Blue, Sky Blue, Green, Purple, Redwine, Peach, Brown Orange
Pack Sizes 1, 2, 5, 10 pieces
Head Diameter See variant options
Head Thickness See variant options
Recommended Application Light to moderate clamping loads; electronics, hobby, DIY
⚠️ Note: Head diameter and thickness vary by size. Contact us to confirm exact head dimensions if your application has tight clearance requirements.

❓ Frequently Asked Questions

How do I choose the right length for my thumb screw?

Measure the total thickness of the material you're fastening, then add the depth of the threaded hole or nut. For example, M2×4mm (≈5/32") is typically used for thin panels up to 2–3mm thick, while M2.5×15mm (≈19/32") suits thicker assemblies. When in doubt, choose a length slightly longer than your stack thickness.

What material are these thumb screws made of?

These thumb screws are made of aluminum alloy with an anodized color finish. Aluminum is lightweight and generally corrosion-resistant, making it suitable for indoor electronics, hobby builds, and light-duty mechanical assemblies.

Can these be used outdoors or in wet environments?

Anodized aluminum generally offers moderate corrosion resistance. For occasional outdoor use in dry or mildly humid conditions, these thumb screws typically perform well. For prolonged exposure to rain, salt spray, or submersion, a stainless steel fastener is generally recommended.

What thread standard do these use — metric or imperial?

These are metric thread fasteners (M2 and M2.5). M2 has a 2mm nominal diameter with a standard pitch of 0.4mm, and M2.5 has a 2.5mm diameter with a standard pitch of 0.45mm. They are not compatible with imperial (UNC/UNF) threaded holes without an adapter.

How much clamping force can these thumb screws handle?

As hand-tightened fasteners, these are designed for light to moderate clamping loads — typically suitable for panel retention, electronics enclosures, and hobby assemblies. They are not intended for high-torque structural applications. For load-critical joints, a tool-driven bolt is generally recommended.

Do the colors affect the thread dimensions or fit?

No. The anodized color finish is applied after machining and does not meaningfully affect thread dimensions or fit. All color variants of the same size (e.g., M2×4mm) are dimensionally identical and interchangeable.

Which size should I choose for a PC case or electronics enclosure?

M2.5×4mm or M2.5×12mm are the most common choices for PC cases, SBCs (like Raspberry Pi), and electronics enclosures. M2 is typically used for smaller boards and ultra-thin panels. Check your board's mounting hole spec before ordering — most Raspberry Pi and similar boards use M2.5.

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

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