M3.5 Knurled Thumb Screws – Hand Grip Knob Bolts for PC Case, Tripod, DIY (Aluminum + Stainless) - HomeDIYer
M3.5 Knurled Thumb Screws – Hand Grip Knob Bolts for PC Case, Tripod, DIY (Aluminum + Stainless) - HomeDIYer
M3.5 Knurled Thumb Screws – Hand Grip Knob Bolts for PC Case, Tripod, DIY (Aluminum + Stainless) - HomeDIYer
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M3.5 Knurled Thumb Screws – Hand Grip Knob Bolts for PC Case, Tripod, DIY (Aluminum + Stainless) - HomeDIYerM3.5 Knurled Thumb Screws – Hand Grip Knob Bolts for PC Case, Tripod, DIY (Aluminum + Stainless) - HomeDIYerM3.5 Knurled Thumb Screws – Hand Grip Knob Bolts for PC Case, Tripod, DIY (Aluminum + Stainless) - HomeDIYer

M3.5 Knurled Thumb Screws – Hand Grip Knob Bolts for PC Case, Tripod, DIY (Aluminum + Stainless)

HomeDIYer
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By HomeDIYer®

Price:
$21.98 USD
Stock:
In stock (500 units), ready to be shipped

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Description

🖥️ M3.5 Knurled Thumb Screws – Hand Grip Knob Bolts for PC Cases & DIY Projects

Ever struggled with tiny screws when opening your PC case, mounting a tripod plate, or adjusting a camera bracket? These M3.5 knurled thumb screws solve that. Made from lightweight aluminum alloy 6061 with a round knurled head, they give you a solid finger grip – no screwdriver needed. Perfect for PC case side panels, rackmount gear, 3D printer beds, and any spot where you need tool‑free access. The knurled pattern on the head ensures you won’t slip, even with slightly oily hands. Upgrade your rig with hardware that looks good and works faster.

✨ Why These Knurled Thumb Screws Are a DIY Favorite

Tool‑free hand grip – Knurled round head lets you tighten or loosen these M3.5 thumb screws by hand in seconds. No more hunting for a Phillips driver.

Aluminum alloy 6061 construction – Lightweight but sturdy, corrosion‑resistant, and looks clean on any PC build or machine.

Perfect for PC cases & electronics – Standard M3.5 thread size fits many computer case side panels, power supply mounts, and expansion slot brackets.

Customizable dimensions – Example format: M3.5 x thread length - knob diameter x knob height. Contact us if you need specific lengths.

Wide application range – Works for tripod mounting plates, camera rigs, machine tools, jigs, and general assembly.

Manufactured to GB standard – Consistent thread geometry from GooBetter Fastener, a trusted brand for DIY hardware.

📏 Technical Specifications – M3.5 Knurled Thumb Screws

Screw Size (Thread) M3.5 (metric)
Head Style Round knurled head – textured for finger grip
Material Aluminum alloy 6061 (knurled head) + Stainless steel threaded rod (per image spec)
Grade Grade 5 equivalent (for threaded rod)
System of Measurement Metric
Standard GB (Chinese national standard)
Brand GooBetter Fastener
Typical Uses PC case panels, camera tripod mounts, bracket shooting, machine tools, DIY assemblies
Dimensional Tolerance Standard industry tolerances – contact us for specific tolerance data
MPN Does not apply (generic high‑quality part)

📐 Dimension naming example: M3.5 x 6 - D12 x H12 = M3.5 thread, 6mm thread length, 12mm knob diameter, 12mm knob height. Custom lengths available upon request.

❔ Frequently Asked Questions

Will these M3.5 thumb screws fit my PC case?

Most standard PC cases use M3.5 threads for side panels and some internal mounts. However, some cases use 6-32 UNC (imperial). We recommend checking your original screw against an M3.5 nut or thread gauge. If you’re not sure, remove one existing screw and compare – M3.5 has a 0.6mm pitch, while 6-32 is finer. For the vast majority of gaming PC cases, these work perfectly.

Are these screws fully aluminum or stainless steel?

The knurled knob head is made from aluminum alloy 6061 for lightweight grip. The threaded shaft is stainless steel (per the image specs), giving you the best of both: a non‑rust, strong thread and a comfortable, cool‑to‑touch aluminum head.

What thread lengths are available? I don’t see a dropdown.

We stock many lengths from 5mm to 30mm in M3.5. If this listing doesn’t show your exact length, please contact customer service with your required thread length, knob diameter, and knob height. We can normally supply custom sizes within a few days.

What does the tolerance situation mean? Is ±0.1mm guaranteed?

All manufactured parts have acceptable variation. Our M3.5 thumb screws are produced within standard GB tolerances (typically ±0.1mm for diameter and ±0.2mm for length). This ensures they fit industry standard nuts and threaded holes. If you need very tight tolerances for a precision instrument, message us – we can provide specific tolerance data before you order.

Can I use these on a camera tripod?

Yes! Many tripod mounting plates and quick‑release brackets use M3.5 or M4 screws. These knurled thumb screws let you hand‑tighten your camera securely without carrying a coin or Allen key. Just check your tripod’s thread size first.

Do you offer other colors besides silver?

Currently this M3.5 model comes with a natural aluminum silver head and stainless steel shaft. For anodized colors (red, blue, black, gold, etc.), please see our other listings – we have many sizes with colored aluminum knobs.

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