🔘 Long 45mm Step Thumb Screws – Stainless UNC Thread + Anodised Aluminium Grip Knob (M3–M6, DIY Fixing)
You need a thumbscrew that reaches deep into a panel, a machine guard, or a DIY fixture – and you want a comfortable, colourful grip that won’t rust. These long step thumb screws combine a 45mm stainless steel threaded stud (UNC or metric – please select) with a knurled anodised aluminium head. The precision‑ground step (shoulder) acts as a built‑in spacer or bearing surface, while the extra‑long thread lets you fasten through thick materials or into deep recesses. Available in M3, M3.5, M4, M5, and M6 metric, or UNC sizes on request. Choose from 10 vibrant anodised colours. Perfect for PC modding, camera rigs, 3D printers, and any application requiring a tool‑less, long‑reach hand fastener.
✨ Key Features – Long 45mm Step Thumb Screws
- 🔘 Long 45mm overall stud length – Extra reach for thick panels, deep threaded holes, or through‑fastening with a nut.
- ⚙️ Step (shoulder) design – Smooth, unthreaded section provides precise spacing and acts as a bearing surface.
- 🎨 Anodised aluminium grip knob – Lightweight, colourful, and non‑slip with diamond knurling – hand tightens easily.
- 🛡️ Stainless steel threaded section – Corrosion‑resistant and strong. Available in UNC (imperial) or metric (M3–M6).
- 📏 Choice of thread standards – UNC for US equipment, metric for international/DIY. Please specify when ordering.
- 🔧 Tool‑less operation – No screwdrivers or wrenches needed. Tighten and loosen by hand with a secure grip.
- 🌈 10 vivid anodised colours – Wine red, pink, golden, royal blue, sky blue, black, silver, green, purple, brown orange.
- 📦 Custom lengths available – If 45mm isn’t what you need, contact us for other step/thread lengths.
📏 Specifications – Long Step Thumb Screws (Aluminium + Stainless)
| Thread Type |
Size Options |
Thread Pitch |
Overall Stud Length (mm) |
Step Length (mm) |
Thread Length (mm) |
Head Style |
Head Material / Colours |
| 📐 Overall stud length = step (unthreaded) + threaded section. Select exact size, colour and thread type from dropdown. |
| Metric |
M3 |
0.5 mm |
45 mm (total) |
5–10 mm (varies by size – contact for exact) |
45 mm minus step length |
Round knurled (step head) |
6061 aluminium / Anodised (10 colours) |
| M3.5 |
0.6 mm |
| M4 |
0.7 mm |
| M5 |
0.8 mm |
| M6 |
1.0 mm |
| UNC (imperial) |
#6-32 |
32 TPI |
| #8-32 |
32 TPI |
| #10-24 |
24 TPI |
| 1/4-20 |
20 TPI |
* Step length and thread length vary by design – the total length is 45mm. For exact step dimensions, please contact customer service. UNC sizes available on request – select from dropdown or leave a note.
🎨 Available Anodised Colours – Personalise Your Project
| Colour |
Best Suited For |
| Wine red / Pink / Purple |
Gaming PCs, custom modding, artistic projects |
| Golden / Royal blue / Sky blue |
High‑contrast accents, camera rigs, racing sims |
| Black / Silver |
Industrial equipment, professional tools, minimalist builds |
| Green / Brown orange |
Outdoor gear, military‑style projects, nature themes |
❓ Frequently Asked Questions – Long Step Thumb Screws
1. What does “step” mean on these thumb screws?
The step is a smooth, unthreaded shoulder between the knurled head and the threaded section. It acts as a built‑in spacer, pivot, or bearing surface. For example, it can pass freely through a hole, allowing the threads to engage a nut or tapped hole while the step provides precise positioning.
2. How do I measure the total length of a step thumb screw?
Total length is measured from the underside of the aluminium head to the tip, including both the step and the threaded section. For these screws, the total length is 45mm. The step and thread lengths vary – please contact us for exact dimensions if required.
3. Can I get UNC threads instead of metric?
Yes – we offer UNC sizes (#6-32, #8-32, #10-24, 1/4-20) on request. Please select from the dropdown or leave a note when ordering. If your size is not listed, contact us.
4. Will the anodised aluminium head fade or scratch?
Anodising is a hard, electrochemical finish that bonds to the aluminium. It resists scratches and fading far better than paint. Normal hand use will not remove the colour.
5. Are these screws suitable for outdoor use?
The stainless steel threaded stud offers good corrosion resistance for indoor and light outdoor use. The anodised aluminium head is also corrosion‑resistant. For continuous saltwater or harsh chemical environments, consider A4 (316) stainless studs – contact us for custom orders.
6. What if I need a different total length or step length?
We offer custom lengths. Please contact customer service with your required total length, step length, thread size, and colour – we’ll create a custom listing for you.
