1/4 - 20 x 20mm Knurled Thumb Screws – Anodized Aluminum, 10 Colors - HomeDIYer
1/4 - 20 x 20mm Knurled Thumb Screws – Anodized Aluminum, 10 Colors - HomeDIYer
1/4 - 20 x 20mm Knurled Thumb Screws – Anodized Aluminum, 10 Colors - HomeDIYer
1/4 - 20 x 20mm Knurled Thumb Screws – Anodized Aluminum, 10 Colors - HomeDIYer
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1/4 - 20 x 20mm Knurled Thumb Screws – Anodized Aluminum, 10 Colors - HomeDIYer1/4 - 20 x 20mm Knurled Thumb Screws – Anodized Aluminum, 10 Colors - HomeDIYer1/4 - 20 x 20mm Knurled Thumb Screws – Anodized Aluminum, 10 Colors - HomeDIYer1/4 - 20 x 20mm Knurled Thumb Screws – Anodized Aluminum, 10 Colors - HomeDIYer

1/4-20 x 20mm Knurled Thumb Screws – Anodized Aluminum, 10 Colors

HomeDIYer
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By HomeDIYer®

Price:
$1.50 USD
Stock:
In stock (500 units), ready to be shipped

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Description

 

Knurled Thumb Screws 1/4-20 x 20mm — Anodized Aluminum in 10 Colors for PC Builds, Enclosures & DIY Projects

Reaching for a screwdriver every time you open a PC case panel, swap a component, or access an equipment enclosure adds unnecessary friction to your workflow. These 1/4-20 knurled thumb screws are designed for builders, modders, and DIY enthusiasts who want reliable, tool-free hand-tightening with a grip that actually holds — without slipping or marring the surface.

Each screw is machined from aluminum alloy with a knurled outer head for secure finger grip, and finished with an anodized coating available in 10 distinct colors: Deep Red, Peach, Gold, Jewel Blue, Azure, Black, Silver, Green, Purple, and Brownish Orange. Thread specification is 1/4-20 UNC (1/4" diameter, 20 threads per inch) with a 20mm (≈25/32") length. Pack sizes range from 1 to 50 pieces, so you can order exactly what your project requires.

Typical applications include custom PC case builds where color-matched knurled thumb screws replace standard panel fasteners, electronics enclosure covers that need frequent tool-free access, and DIY camera rigs or tripod accessories that use 1/4-20 threaded mounts. The anodized color options also make these a popular choice for color-coding fasteners by location or function in complex assemblies.

🔩 Thread Standard: UNC 1/4-20 (1/4" diameter, 20 TPI). Not compatible with metric threads (e.g., M6). Verify your mating thread before ordering.
⚠️ Material note: Aluminum alloy with anodized finish. Suitable for light-to-moderate hand-tightened loads. Not recommended for structural or high-torque applications. Contact us to confirm suitability for your use case.

✅ Key Features of These Knurled Thumb Screws

  • ✋Knurled Head for Secure Hand Grip — The cross-hatched knurl pattern machined into the head provides significantly more finger traction than smooth-head designs, making tool-free tightening and loosening reliable even in frequently accessed enclosures or PC case panels.
  • 🎨10 Anodized Color Options — Available in Deep Red, Peach, Gold, Jewel Blue, Azure, Black, Silver, Green, Purple, and Brownish Orange — ideal for color-coded fastener systems, custom PC builds, or any assembly where visual identification matters.
  • ⚙️1/4-20 UNC Thread — Widely Compatible — The 1/4-20 thread is one of the most common UNC sizes in North American hardware, used across PC cases, camera mounts, electronics enclosures, and DIY fixtures — making these a versatile replacement for standard panel fasteners.
  • 🔧Lightweight Aluminum Construction — Aluminum alloy keeps weight low compared to steel equivalents — an advantage in weight-sensitive builds like camera rigs, portable enclosures, or any assembly where cumulative fastener weight is a consideration.
  • 📐20mm Length — Versatile Panel Depth — At 20mm (≈25/32"), these screws accommodate a wide range of panel thicknesses while providing adequate thread engagement for secure hand-tightened connections in most enclosure and cover applications.
  • 📦Flexible Pack Sizes — 1 to 50 Pieces — Order 1, 2, 5, 10, 20, or 50 pieces per color. Stock up for a full build, replace a single lost fastener, or buy in bulk for production runs — without over-ordering.

📐 Technical Specifications — Knurled Aluminum Thumb Screws

Thread Standard UNC (Unified National Coarse)
Thread Size 1/4-20 (1/4" diameter, 20 threads per inch)
Length 20mm (≈25/32")
Head Style Knurled round head (hand-tighten, no tool required)
Material Aluminum alloy
Finish Anodized (color options below)
Color Options Deep Red, Peach, Gold, Jewel Blue, Azure, Black, Silver, Green, Purple, Brownish Orange
Pack Sizes 1 / 2 / 5 / 10 / 20 / 50 PCS
Drive Type Hand-tighten (knurled grip, no tool required)
Recommended Use PC case panels, electronics enclosures, camera mounts, DIY fixtures
Outdoor Suitability Light indoor/outdoor use; not recommended for prolonged salt or moisture exposure
Head Diameter See variant options / Contact us to confirm

❓ Frequently Asked Questions

What does 1/4-20 mean, and how do I know if it fits my application?

1/4-20 refers to a UNC (Unified National Coarse) thread with a 1/4" (6.35mm) diameter and 20 threads per inch. This is one of the most common thread sizes in North American hardware, widely used in PC case panels, electronics enclosures, camera equipment, and DIY fixtures. To confirm compatibility, check the thread specification of your mating nut or threaded insert before ordering.

Is 20mm the right length for my panel or enclosure?

20mm (approximately 25/32") is a versatile length suitable for most panel-mount and enclosure applications. As a general rule, you need enough thread engagement beyond the panel thickness to seat securely — typically at least 1x the thread diameter (about 6mm for 1/4-20). If your panel is thicker than about 12–14mm, you may need a longer screw. Contact us to confirm if you have a specific clearance requirement.

What is the difference between knurled and smooth thumb screw heads?

Knurled heads have a textured, cross-hatched or diamond pattern machined into the outer surface of the head. This texture significantly improves grip when tightening or loosening by hand, especially in applications where the screw is accessed frequently or where gloves may be worn. Smooth-head thumb screws generally require more finger pressure and are more prone to slipping under load.

How strong are these aluminum knurled thumb screws?

These are aluminum alloy thumb screws designed for hand-tightened, light-to-moderate clamping loads — typically sufficient for PC case panels, access covers, electronics enclosures, and non-structural DIY assemblies. Aluminum is lighter than steel but has lower tensile strength. For applications requiring higher clamping force or structural load-bearing, a steel thumb screw would generally be more appropriate. Contact us to confirm suitability for your specific use case.

Are these suitable for outdoor use?

The anodized finish on these aluminum thumb screws provides a reasonable level of corrosion resistance for indoor and light outdoor use. However, anodized aluminum is generally not recommended for prolonged exposure to salt spray, standing water, or harsh outdoor environments. For outdoor or high-humidity applications, a stainless steel thumb screw would typically offer better long-term durability.

What thread standard do these use — UNC or metric?

These thumb screws use UNC (Unified National Coarse) thread — specifically 1/4-20, meaning 1/4" diameter and 20 threads per inch. They are not metric. If your application uses metric threads (e.g., M6), these will not be compatible. Always verify your thread standard before ordering.

Can I use these for PC case builds or computer hardware?

Yes — 1/4-20 is a common thread size used in some PC case panels, camera mounts, and electronics enclosures. The knurled head allows tool-free installation and removal, making these a practical choice for side panels, access covers, or any component that needs to be opened frequently. The wide range of anodized colors also makes them popular for custom PC builds where aesthetics matter.

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

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