🔧 Product Overview: UNC / Metric Knurled Thumb Screws – Aluminum Grip + Stainless Thread, Long 95mm Shank, Stepped Handle
For deep panel fastening or applications requiring extra long thread engagement, these stepped knurled thumb screws feature a long 95mm stainless steel threaded shank paired with a comfortable, colorful anodized aluminum grip. The stepped (step) handle design provides excellent leverage and a natural finger stop for tool‑less hand tightening. The diamond knurled surface ensures a secure, non‑slip grip even with oily or gloved hands. Available in metric sizes M3 to M6 (or custom UNC threads on request), fully threaded with coarse pitch, and in a wide range of thread lengths – including the long 95mm option. Choose from 10 vibrant anodized colors (Wine Red, Pink, Golden, Royal Blue, Sky Blue, Black, Silver, Green, Purple, Brown Orange). Ideal for machinery, 3D printers, camera rigs, and custom DIY builds.
✨ Why These Long‑Shank Stepped Thumb Screws Are a Workshop Essential
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Long 95mm thread length (and other lengths available) – Perfect for deep holes, thick panels, or applications requiring extended thread engagement.
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Stepped (step) handle design – Provides extra leverage and a natural finger stop, making hand tightening easier and more comfortable.
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Dual‑material construction – Anodized aluminum head (lightweight, colorful, non‑slip) + stainless steel threaded rod (corrosion‑resistant, strong, durable).
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Knurled grip for tool‑less operation – Diamond knurl pattern gives you secure finger traction – no screwdriver or wrench needed.
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10 vibrant anodized colors – Choose from Wine Red, Pink, Golden, Royal Blue, Sky Blue, Black, Silver, Green, Purple, or Brown Orange to match your project.
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Metric sizes M3, M3.5, M4, M5, M6 – Covers a wide range of applications from small electronics to medium machinery. UNC threads available on request.
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Fully threaded, coarse pitch – Threads run the entire length for maximum grip and easy nut engagement.
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Custom lengths available – If you need a specific thread length not listed, please contact customer service – we can accommodate most requests.
📏 Technical Specifications – Long‑Shank Stepped Knurled Thumb Screws
| Product Type |
Stepped Knurled Thumb Screws (Hand Grip Bolts) |
| Head Material |
Aluminum alloy (anodized) |
| Thread Material |
Stainless steel |
| Available Thread Sizes |
M3, M3.5, M4, M5, M6 (metric) – UNC threads available on request |
| Thread Pitches (coarse metric) |
M3x0.5, M3.5x0.6, M4x0.7, M5x0.8, M6x1.0 |
| Thread Type |
Fully threaded |
Thread Lengths Available |
Various lengths including long 95mm option (select from dropdown)
|
| Length Measurement |
Under head – from underside of stepped head to tip (head not included) |
| Head Style |
Stepped knurled cylinder (diamond knurl, long grip profile) |
| Drive Style |
Hand grip (toolless) |
Available Colors (10) |
Wine Red, Pink, Golden, Royal Blue, Sky Blue, Black, Silver, Green, Purple, Brown Orange
|
| Customization |
Custom thread lengths and UNC threads available – contact us |
❓ FAQs – Long‑Shank Knurled Thumb Screws
🔸 What is the advantage of the long 95mm thread length?
The 95mm thread length is ideal for deep blind holes, thick panel assemblies, or when you need to pass through multiple layers. It provides maximum thread engagement for secure fastening in heavy‑duty applications.
🔸 Are these screws fully threaded? How is length measured?
Yes – they are fully threaded from under the stepped head to the tip. Length is measured from the underside of the head to the tip (head not included). A 95mm screw has a 95mm threaded shank.
🔸 Are UNC (imperial) threads available? Which sizes?
Yes – while the primary listing is for metric threads (M3–M6), we can supply UNC threads (e.g., #6-32, #8-32, #10-24, 1/4-20, etc.) upon request. Please contact customer service with your specific UNC size and length requirements.
🔸 Will the anodized color fade or wear off?
Anodizing is an electrochemical process that bonds the color to the aluminum surface. It is durable and will not peel like paint. Under normal hand use, the color will remain vibrant for years. Heavy abrasion may wear the finish, but typical thumb screw applications are gentle.
🔸 Can I use these screws with nuts, or are they for tapped holes only?
These are standard machine screws – they work with matching metric nuts (or UNC nuts for custom orders) or in pre‑tapped holes. The long thread length is especially useful for through‑hole applications where a nut is used on the opposite side.
🔸 What other thread lengths are available besides 95mm?
We offer many thread lengths – please select from the dropdown options. Typical lengths include 10mm, 15mm, 20mm, 25mm, 30mm, 40mm, 50mm, 60mm, 70mm, 80mm, 95mm, and 100mm. If you need a specific length not listed, contact us for a custom quote.
