UNC 6 - 32 x 12mm Flat Head Aluminum Thumb Screws — Anodized, 10 Colors, Multi - Pack - HomeDIYer

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UNC 6#-32 x 12mm Flat Head Aluminum Thumb Screws — Anodized, 10 Colors, Multi-Pack

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Size: 6#-32x12mm

Colors: Wine Red

QTY: 1 Pcs

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$6.94 USD

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In stock (500 units), ready to be shipped

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UNC 6#-32 x 12mm Flat Head Aluminum Thumb Screws — Low-Profile Anodized Fasteners in 10 Colors

When you need a thumb screw that won’t protrude above the panel surface — whether you’re building a compact electronics enclosure, assembling a drone frame, or fitting access panels on an RC car chassis — a standard tall-knob design gets in the way. These UNC 6#-32 x 12mm flat head aluminum thumb screws give makers, hobbyists, and light-assembly technicians a low-profile, tool-free fastening solution with a knurled outer edge that still provides a reliable finger grip.

Each screw is machined from aluminum alloy with an anodized finish and features a flat disc head with a knurled outer edge for hand-tightening. The shank is 12mm (≈15/32") long on the UNC 6#-32 thread standard. Ten anodized colors are available — Wine Red, Rose Red, Golden, Royal Blue, Sky Blue, Black, Silver, Green, Purple, and Orange — and screws are sold in packs of 1, 5, 8, 10, 15, or 20 pieces, including an 8-piece option that suits builds with an even number of fastener positions.

Typical use cases include securing access panels on electronics enclosures and DIY project boxes where a low-profile fastener avoids interference with adjacent components, fastening body panels on RC cars and drone frames where the flat head profile reduces snagging on cables or covers, and color-coding fastener positions across multi-panel assemblies so disassembly is faster and less error-prone during maintenance or iteration.

🔩 Thread Compatibility: UNC 6#-32 — fits any standard UNC 6#-32 nut, threaded insert, or tapped hole. Shank length is 12mm (≈15/32"). Verify your panel thickness and mating thread depth before ordering.

✅ Key Features of These UNC 6#-32 Flat Head Aluminum Thumb Screws

📐Low-Profile Flat Head Design — The flat disc head sits close to the panel surface when tightened, making these flat head thumb screws a practical choice for space-constrained enclosures or builds where a protruding knob would interfere with adjacent parts or covers.
✋Knurled Edge for Tool-Free Tightening — The knurled outer edge of the flat head provides enough finger grip for hand-tightening and loosening without a screwdriver, making it practical for panels and enclosures that need frequent access.
🎨10 Anodized Color Options — Choose from Wine Red, Rose Red, Golden, Royal Blue, Sky Blue, Black, Silver, Green, Purple, or Orange. Anodized finish integrates into the aluminum surface and generally resists chipping and peeling under normal use.
📦Flexible Pack Sizes Including 8-Piece — Available in 1, 5, 8, 10, 15, or 20-piece packs. The 8-piece option is particularly useful for builds with an even number of fastener positions — such as panels with 8 access points — avoiding leftover screws from a 10-piece pack.
⚖️Lightweight Aluminum Construction — Aluminum alloy keeps fastener weight minimal, a practical advantage in weight-sensitive builds like RC vehicles, drones, and portable enclosures where every gram matters.
🔧UNC 6#-32 Standard Thread — One of the most widely used thread standards in the US, ensuring broad compatibility with off-the-shelf nuts, inserts, and tapped holes in American-spec hardware and electronics enclosures.

📐 Technical Specifications — UNC 6#-32 Flat Head Anodized Aluminum Thumb Screws

Thread Standard	UNC 6#-32
Thread Diameter	#6 (≈3.5mm / 0.138")
Thread Pitch	32 TPI (threads per inch)
Shank Length	12mm (≈15/32")
Head Style	Flat disc head with knurled outer edge (hand-tighten)
Head Diameter	See variant options
Head Height	See variant options
Material	Aluminum alloy
Surface Finish	Anodized
Available Colors	Wine Red, Rose Red, Golden, Royal Blue, Sky Blue, Black, Silver, Green, Purple, Orange
Pack Quantities	1, 5, 8, 10, 15, 20 PCS
Drive Type	Hand-tighten (no tool required)
Recommended Use	Light-duty panel fastening, electronics enclosures, RC builds, DIY project boxes

⚠️ Note: These are aluminum thumb screws designed for hand-tightening and light-duty applications. They are not intended for high-torque or structural load-bearing use. Verify your panel thickness and mating thread depth before ordering.

❓ Frequently Asked Questions

Is 12mm the right shank length for my panel?

Match the shank length to your panel stack-up. The 12mm (≈15/32") shank is generally suited for panels or material stacks in the 6–10mm thickness range, leaving enough thread engagement in the mating nut or insert. If your panel is thinner, a shorter shank may be more appropriate. Always verify your mating thread depth before ordering.

What is a flat head thumb screw and when should I use one?

A flat head thumb screw has a low-profile, disc-shaped head that sits flush or nearly flush with the panel surface when tightened. This makes it a practical choice when vertical clearance above the panel is limited, when a cleaner visual profile is preferred, or when a protruding knob would interfere with adjacent components or covers. The knurled outer edge still allows tool-free hand-tightening.

What thread standard is UNC 6#-32, and what will it fit?

UNC 6#-32 is Unified National Coarse thread, #6 diameter (≈3.5mm / 0.138") at 32 threads per inch. It is one of the most common thread standards in the United States and is compatible with any standard UNC 6#-32 nut, threaded insert, or tapped hole. Always verify your mating thread specification before ordering.

How much torque or clamping force can these handle?

These are aluminum thumb screws designed for hand-tightening and light-duty panel fastening. Typical hand-tightening torque for a #6-32 aluminum screw is generally in the range of 2–5 in-lbs. For higher load requirements or structural connections, a steel fastener is recommended.

Can these be used outdoors or in humid environments?

The anodized aluminum finish provides moderate corrosion resistance, making these screws generally suitable for light outdoor or humid-environment use. For prolonged saltwater exposure or heavy-weather conditions, a stainless steel alternative is typically recommended. For most indoor and sheltered outdoor applications, these should perform well.

Do the anodized colors affect performance or durability?

No. The colors are achieved through anodizing, an electrochemical process that integrates into the aluminum surface rather than sitting on top like paint. The finish generally does not chip or peel under normal use and does not affect the screw's mechanical performance. Color-coding can also be useful for organizing or identifying different fastener positions across a build.

Why would I choose the 8-piece pack over a 5- or 10-piece pack?

The 8-piece pack is a practical middle option for enclosures or builds that use an even number of fastener positions — such as a panel with 4 corners and 4 mid-points, or a chassis with 8 access screws. It avoids the waste of a 10-piece pack when you only need 8, and is more economical per screw than buying two 5-piece packs.

Can I use these without any tools?

Yes. The knurled edge on the flat head is designed for tool-free, hand-tightening. The knurled surface provides enough friction for finger-tightening in most panel and enclosure applications. If you need a tighter hold than hand-tightening allows, these screws may not be the right choice for that specific application.

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