M3×16mm Aluminum Knurled Thumb Screws — Hand - Tighten Grip Knob Bolts, 10 Colors, 1–100 Pcs - HomeDIYer
M3×16mm Aluminum Knurled Thumb Screws — Hand - Tighten Grip Knob Bolts, 10 Colors, 1–100 Pcs - HomeDIYer
M3×16mm Aluminum Knurled Thumb Screws — Hand - Tighten Grip Knob Bolts, 10 Colors, 1–100 Pcs - HomeDIYer
M3×16mm Aluminum Knurled Thumb Screws — Hand - Tighten Grip Knob Bolts, 10 Colors, 1–100 Pcs - HomeDIYer
M3×16mm Aluminum Knurled Thumb Screws — Hand - Tighten Grip Knob Bolts, 10 Colors, 1–100 Pcs - HomeDIYer
M3×16mm Aluminum Knurled Thumb Screws — Hand - Tighten Grip Knob Bolts, 10 Colors, 1–100 Pcs - HomeDIYer
M3×16mm Aluminum Knurled Thumb Screws — Hand - Tighten Grip Knob Bolts, 10 Colors, 1–100 Pcs - HomeDIYer
M3×16mm Aluminum Knurled Thumb Screws — Hand - Tighten Grip Knob Bolts, 10 Colors, 1–100 Pcs - HomeDIYer
M3×16mm Aluminum Knurled Thumb Screws — Hand - Tighten Grip Knob Bolts, 10 Colors, 1–100 Pcs - HomeDIYer
M3×16mm Aluminum Knurled Thumb Screws — Hand - Tighten Grip Knob Bolts, 10 Colors, 1–100 Pcs - HomeDIYer
M3×16mm Aluminum Knurled Thumb Screws — Hand - Tighten Grip Knob Bolts, 10 Colors, 1–100 Pcs - HomeDIYer
M3×16mm Aluminum Knurled Thumb Screws — Hand - Tighten Grip Knob Bolts, 10 Colors, 1–100 Pcs - HomeDIYer
M3×16mm Aluminum Knurled Thumb Screws — Hand - Tighten Grip Knob Bolts, 10 Colors, 1–100 Pcs - HomeDIYer
M3×16mm Aluminum Knurled Thumb Screws — Hand - Tighten Grip Knob Bolts, 10 Colors, 1–100 Pcs - HomeDIYer
M3×16mm Aluminum Knurled Thumb Screws — Hand - Tighten Grip Knob Bolts, 10 Colors, 1–100 Pcs - HomeDIYer
M3×16mm Aluminum Knurled Thumb Screws — Hand - Tighten Grip Knob Bolts, 10 Colors, 1–100 Pcs - HomeDIYer
M3×16mm Aluminum Knurled Thumb Screws — Hand - Tighten Grip Knob Bolts, 10 Colors, 1–100 Pcs - HomeDIYer
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M3×16mm Aluminum Knurled Thumb Screws — Hand - Tighten Grip Knob Bolts, 10 Colors, 1–100 Pcs - HomeDIYerM3×16mm Aluminum Knurled Thumb Screws — Hand - Tighten Grip Knob Bolts, 10 Colors, 1–100 Pcs - HomeDIYerM3×16mm Aluminum Knurled Thumb Screws — Hand - Tighten Grip Knob Bolts, 10 Colors, 1–100 Pcs - HomeDIYerM3×16mm Aluminum Knurled Thumb Screws — Hand - Tighten Grip Knob Bolts, 10 Colors, 1–100 Pcs - HomeDIYerM3×16mm Aluminum Knurled Thumb Screws — Hand - Tighten Grip Knob Bolts, 10 Colors, 1–100 Pcs - HomeDIYerM3×16mm Aluminum Knurled Thumb Screws — Hand - Tighten Grip Knob Bolts, 10 Colors, 1–100 Pcs - HomeDIYerM3×16mm Aluminum Knurled Thumb Screws — Hand - Tighten Grip Knob Bolts, 10 Colors, 1–100 Pcs - HomeDIYerM3×16mm Aluminum Knurled Thumb Screws — Hand - Tighten Grip Knob Bolts, 10 Colors, 1–100 Pcs - HomeDIYerM3×16mm Aluminum Knurled Thumb Screws — Hand - Tighten Grip Knob Bolts, 10 Colors, 1–100 Pcs - HomeDIYerM3×16mm Aluminum Knurled Thumb Screws — Hand - Tighten Grip Knob Bolts, 10 Colors, 1–100 Pcs - HomeDIYerM3×16mm Aluminum Knurled Thumb Screws — Hand - Tighten Grip Knob Bolts, 10 Colors, 1–100 Pcs - HomeDIYerM3×16mm Aluminum Knurled Thumb Screws — Hand - Tighten Grip Knob Bolts, 10 Colors, 1–100 Pcs - HomeDIYerM3×16mm Aluminum Knurled Thumb Screws — Hand - Tighten Grip Knob Bolts, 10 Colors, 1–100 Pcs - HomeDIYerM3×16mm Aluminum Knurled Thumb Screws — Hand - Tighten Grip Knob Bolts, 10 Colors, 1–100 Pcs - HomeDIYerM3×16mm Aluminum Knurled Thumb Screws — Hand - Tighten Grip Knob Bolts, 10 Colors, 1–100 Pcs - HomeDIYerM3×16mm Aluminum Knurled Thumb Screws — Hand - Tighten Grip Knob Bolts, 10 Colors, 1–100 Pcs - HomeDIYerM3×16mm Aluminum Knurled Thumb Screws — Hand - Tighten Grip Knob Bolts, 10 Colors, 1–100 Pcs - HomeDIYer

M3×16mm Aluminum Knurled Thumb Screws — Hand-Tighten Grip Knob Bolts, 10 Colors, 1–100 Pcs

HomeDIYer
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By HomeDIYer®

Price:
$3.85 USD
Stock:
In stock (500 units), ready to be shipped

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Description

M3×16mm Aluminum Knurled Thumb Screws — Tool-Free Hand-Tighten Knob Bolts in 10 Colors

Reaching for a screwdriver every time you need to open an enclosure, adjust a panel, or swap a component gets old fast. Makers, electronics hobbyists, RC builders, and DIY enthusiasts who need frequent tool-free access to their builds rely on knurled thumb screws to make adjustments quick and frustration-free. Finding aluminum alloy thumb screws in a size that actually fits standard M3 threads — and in a color that matches your build aesthetic — is where most listings fall short.

Each order includes your selected quantity (1 to 100 pieces) of M3×16mm knurled thumb screws machined from aluminum alloy. Thread diameter is M3 (3mm / ≈0.118"), thread length is 16mm (≈0.63"), and the thread pitch follows the standard M3×0.5 metric coarse specification. The knurled head provides a textured grip surface for secure finger-tight installation. Available in 10 anodized colors: Wine Red, Rose Red, Golden, Royal Blue, Sky Blue, Black, Silver, Green, Purple, and Orange.

Typical use cases include securing electronics enclosure panels on 3D printers and CNC machines using M3 hand-tighten knob bolts, assembling RC car and drone frames where frequent component swaps require tool-free fasteners, and adding color-coded thumb screws to DIY project boxes and maker builds for both function and visual organization.

🔗 Compatibility: Standard M3×0.5 metric coarse thread — fits any M3 nut, threaded insert, or tapped hole following the ISO metric standard. Thread diameter: 3mm (≈0.118"). Thread length: 16mm (≈0.63").

✅ Key Features of These M3 Aluminum Knurled Thumb Screws

  • ✋Knurled Grip Head — The textured knurl pattern on the head gives your fingers enough purchase to drive and remove the screw without any tools, making it ideal for hand-tighten knob bolt applications on panels and enclosures.
  • 🎨10 Anodized Color Options — Choose from Wine Red, Rose Red, Golden, Royal Blue, Sky Blue, Black, Silver, Green, Purple, or Orange to color-code your builds or match your project's aesthetic without sacrificing function.
  • ⚖️Lightweight Aluminum Alloy — Aluminum construction keeps weight low compared to steel fasteners — a meaningful advantage in weight-sensitive builds like RC aircraft, drones, and portable electronics enclosures.
  • 🔩Standard M3×0.5 Thread — Machined to ISO metric coarse thread spec, these screws engage cleanly with standard M3 nuts, heat-set inserts, and tapped aluminum or plastic panels without cross-threading risk.
  • 📦Flexible Quantity Options — Order from 1 to 100 pieces in a single SKU — useful whether you need a single replacement screw or a bulk stock for production assembly of DIY electronics or maker kits.
  • 🛡️Corrosion-Resistant Finish — The anodized surface treatment adds a layer of oxidation resistance to the aluminum base, helping the screws hold up in typical indoor workshop and electronics environments.

📐 Technical Specifications — M3 Aluminum Knurled Thumb Screws

Thread Size M3 (3mm / ≈0.118" diameter)
Thread Pitch M3×0.5 (standard metric coarse)
Thread Length (Shank) 16mm (≈0.63")
Material Aluminum Alloy
Finish Anodized (color varies by selection)
Available Colors Wine Red · Rose Red · Golden · Royal Blue · Sky Blue · Black · Silver · Green · Purple · Orange
Head Style Knurled (textured grip, tool-free installation)
Head Diameter See variant options
Head Height See variant options
Drive Type Hand-tighten (no tool required for standard torque)
Available Quantities 1 · 2 · 3 · 5 · 8 · 10 · 15 · 20 · 25 · 30 · 40 · 50 · 60 · 80 · 100 pcs
Compatible Standards ISO metric M3 — fits standard M3 nuts, threaded inserts, tapped holes
⚠️ Note: These are aluminum alloy fasteners intended for light-duty, tool-free applications. They are not rated for high-torque or structural load-bearing use. For vibration-critical or outdoor heavy-duty applications, stainless steel fasteners are generally recommended.

❓ Frequently Asked Questions

What size are these thumb screws and what does M3×16mm mean?

M3 refers to the metric thread diameter of 3mm (≈0.118"). 16mm (≈0.63") is the thread length (shank length). These are the only size currently available in this listing. If you need a different size, please check our other listings or contact us.

Are these thumb screws strong enough for structural use?

These thumb screws are made from aluminum alloy, which is generally suitable for light-duty fastening, panel assembly, electronics enclosures, RC builds, and DIY projects where tool-free adjustment is needed. For high-load or vibration-critical structural applications, stainless steel fasteners are typically recommended instead.

Can I use these thumb screws outdoors?

Aluminum alloy has natural corrosion resistance and generally performs well in dry or mildly humid outdoor environments. For prolonged exposure to rain, salt spray, or harsh chemicals, applying a protective coating or choosing stainless steel fasteners is typically recommended.

What thread standard do these use — are they compatible with standard M3 nuts and inserts?

Yes. These use standard M3 metric coarse thread (M3×0.5 pitch), which is compatible with standard M3 nuts, threaded inserts, and tapped holes. They will fit any M3-threaded component that follows the ISO metric standard.

How do I choose the right quantity?

Select the quantity that matches your project needs from the dropdown above: 1, 2, 3, 5, 8, 10, 15, 20, 25, 30, 40, 50, 60, 80, or 100 pieces. Buying in larger quantities generally reduces the per-unit cost. For prototyping or single repairs, 1–5 pcs is typically sufficient; for production runs or stocking, 20–100 pcs is more economical.

What colors are available and do the colors affect strength?

Available colors are: Wine Red, Rose Red, Golden, Royal Blue, Sky Blue, Black, Silver, Green, Purple, and Orange. The color is an anodized or surface finish applied to the aluminum — it does not affect the mechanical strength or thread dimensions of the screw.

Do I need a tool to install these thumb screws?

No. The knurled head is designed for finger-tight installation without any tools. The textured grip pattern allows you to apply sufficient torque by hand for most light-duty fastening applications. For higher-torque requirements, a coin or flat-head screwdriver can typically be used on the head.

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

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