1/4 - 20 Knurled Thumb Screws — Aluminum & Stainless Steel | Black & Red | 6–60mm - HomeDIYer

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1/4-20 Knurled Thumb Screws — Aluminum & Stainless Steel | Black & Red | 6–60mm

Name: 1/4-20 Knurled Thumb Screws — Aluminum & Stainless Steel | Black & Red | 6–60mm
Brand: HomeDIYer
Price: 10.59 USD
Availability: InStock

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Thread Diameter x Length: 1/4-20 x 6mm

Colour: Black

Quantity(Pcs): 1 Pcs

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$10.59 USD

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In stock (500 units), ready to be shipped

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1/4-20 Knurled Thumb Screws for Tool-Free Fastening — Black & Red, Aluminum & Stainless Steel

Constantly hunting for a screwdriver to open an access panel breaks your rhythm — whether you're a maker assembling a custom PC build, a technician servicing rack equipment, or a DIYer putting together a project enclosure. These 1/4-20 knurled thumb screws are built for anyone who needs fast, tool-free access without sacrificing a finished look. Available in bold black and eye-catching red, they let you color-code panels, add a visual accent to a build, or simply match your existing hardware aesthetic.

Each order is available in quantities of 1, 2, 5, 10, or 20 pieces — so you can grab a single replacement or stock up for a full project. Both aluminum and stainless steel options are offered in the same black and red finishes. Thread diameter is 1/4-20 UNC (≈6.35mm), with thread lengths from 6mm (≈1/4") to 60mm (≈2-3/8") to match a wide range of fastening depths.

Common applications include securing side panels and access covers on custom PC cases and electronics enclosures where tool-free removal is a daily convenience, fastening covers on DIY project boxes and Raspberry Pi housings where a pop of red or a clean black finish adds a personal touch, and assembling workshop fixtures or jigs where hand-adjustable 1/4-20 thumb screws speed up setup and teardown without reaching for tools.

🔩 Thread Compatibility: 1/4-20 UNC — fits standard North American tapped holes with 1/4-inch diameter and 20 threads per inch. Verify your hole's thread pitch before ordering.

✅ Key Features of These 1/4-20 Knurled Thumb Screws

✋Knurled Head for Firm Hand-Grip — The textured knurl pattern gives your fingers solid traction for tool-free tightening and loosening, even in tight spaces or during repeated access cycles on enclosures and panels.
🔴⚫Black & Red Color Options — Black blends into dark chassis and stealth builds; red stands out for quick visual identification on access panels or color-coded custom PC and electronics projects.
📏12 Length Options: 6mm to 60mm — From 6mm (≈1/4") for shallow tapped holes to 60mm (≈2-3/8") for deeper fastening applications, giving you precise thread engagement across a wide range of builds.
📦Flexible Pack Sizes — Order 1, 2, 5, 10, or 20 pieces per variant — whether you need a single replacement thumb screw or a full set for a multi-panel enclosure build.
⚖️Aluminum & Stainless Steel — Aluminum reduces weight in weight-sensitive builds; stainless steel offers greater tensile strength and corrosion resistance for more demanding fastening tasks.
🔄Designed for Repeated Use — The knurled thumb screw head withstands repeated installation and removal cycles without tool wear, making it a reliable choice for panels and covers that need regular opening.

📐 Technical Specifications — 1/4-20 Knurled Thumb Screws

Product Type	Knurled Thumb Screw (Hand Knob Bolt)
Head Style	Knurled round head (thumb screw)
Thread Size	1/4-20 UNC (1/4-inch diameter, 20 threads per inch)
Thread Standard	UNC (Unified National Coarse)
Available Thread Lengths	6mm (≈1/4"), 8mm (≈5/16"), 10mm (≈3/8"), 12mm (≈1/2"), 15mm (≈19/32"), 20mm (≈25/32"), 25mm (≈1"), 30mm (≈1-3/16"), 35mm (≈1-3/8"), 40mm (≈1-9/16"), 50mm (≈2"), 60mm (≈2-3/8")
Material	Aluminum alloy / Stainless steel (see variant options)
Available Colors	Black, Red
Drive Type	Hand-drive (no tool required)
Available Quantities	1, 2, 5, 10, or 20 pieces per order
Head Diameter	See variant options
Corrosion Resistance	Moderate (aluminum) / Good (stainless steel)
Recommended Use	PC cases, electronics enclosures, DIY project boxes, workshop jigs, access panels
Country of Origin	Contact us to confirm

⚠️ Sizing Note: Thread length is measured from the underside of the head to the tip of the screw. Ensure your tapped hole depth accommodates the full thread length selected. When in doubt, choose a shorter length and verify fit before ordering in quantity.

❓ Frequently Asked Questions

How do I choose the right thread length for my application?

Measure the depth of your tapped hole or the thickness of the material being clamped. For a secure hold, thread engagement should generally be at least 1–1.5× the thread diameter. For 1/4-20 screws (6.35mm diameter), aim for at least 6–9mm of engagement. Available lengths range from 6mm (≈1/4") to 60mm (≈2-3/8"), so you can match your exact requirement.

What is the load-bearing capacity of these thumb screws?

These screws are designed for light-to-medium clamping and panel-fastening applications. Stainless steel variants generally offer higher tensile strength than aluminum. They are not intended for structural or high-vibration load-bearing use. Contact us to confirm suitability for your specific application.

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

Stainless steel variants are generally suitable for light outdoor or damp environments due to their corrosion resistance. Aluminum variants are naturally oxidation-resistant but may not be ideal for prolonged salt-spray or highly corrosive conditions. For outdoor use, the stainless steel option is recommended.

What thread standard does 1/4-20 follow?

1/4-20 is a UNC (Unified National Coarse) thread standard — 1/4-inch diameter with 20 threads per inch. It is one of the most common thread sizes in North American equipment, enclosures, and hardware. Always verify your tapped hole matches 1/4-20 UNC before ordering.

How do I choose between black and red?

Black thumb screws blend into dark enclosures, server chassis, and stealth builds for a clean, low-profile look. Red thumb screws are ideal for builds where quick visual identification matters — such as access panels that need to stand out, or custom PC and electronics projects where color-coding improves workflow and reduces errors during assembly.

How do I decide between aluminum and stainless steel?

Choose aluminum if weight reduction is a priority — it is typically about 65% lighter than stainless steel. Choose stainless steel if you need higher strength or better corrosion resistance for use in damp or demanding environments. Both materials are available in black and red finishes.

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

No tools are required. The knurled head provides a firm finger grip for hand-tightening and loosening, making these ideal for panels and enclosures that need frequent access — such as PC side panels, electronics project boxes, and workshop jig covers.

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

1/4-20 Knurled Thumb Screws — Aluminum & Stainless Steel | Black & Red | 6–60mm

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Description

1/4-20 Knurled Thumb Screws for Tool-Free Fastening — Black & Red, Aluminum & Stainless Steel

✅ Key Features of These 1/4-20 Knurled Thumb Screws

📐 Technical Specifications — 1/4-20 Knurled Thumb Screws

❓ Frequently Asked Questions

1/4-20 Knurled Thumb Screws — Aluminum & Stainless Steel | Black & Red | 6–60mm

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