Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
When you need to open, adjust, or secure a panel repeatedly without reaching for a screwdriver, standard hex bolts become a daily frustration. Makers, electronics builders, and workshop owners who work with enclosures, jigs, access panels, and equipment covers need a fastener they can tighten and release by hand — quickly and reliably. These black plastic pentagram star thumb screws are designed exactly for that workflow.
Each thumb screw features a round domed black plastic star-grip head (approximately 25 mm / ~1 in diameter) over a Grade 4.8 carbon steel threaded shank. Available in metric thread sizes M5, M6, M8, and M10, with thread lengths ranging from 15 mm (~0.59 in) to 70 mm (~2.76 in). The closed-end domed head provides a comfortable grip surface while protecting the thread end.
Typical use cases include securing 3D printer enclosure panels and access doors, fastening electronic equipment rack covers and chassis lids, and assembling DIY woodworking jigs, fixtures, and adjustable stops where hand-tightening thumb screws replace tool-dependent fasteners in workshop setups.
The pentagram star-shaped plastic head provides five grip points for firm finger torque — no screwdriver, wrench, or hex key needed for routine tightening and loosening.
Available in M5, M6, M8, and M10 thread diameters with thread lengths from 15 mm to 70 mm (~0.59–2.76 in), covering the most common metric fastener needs in one product family.
The threaded shank is Grade 4.8 carbon steel — adequate tensile strength for panel fastening, jig assembly, and light-duty clamping applications where hand torque is the limiting factor.
The round domed head is molded in black plastic, approximately 25 mm in diameter, giving a clean finished appearance on enclosures, panels, and equipment while protecting the thread tip.
Order as 1, 2, 5, or 10 pieces per variant — buy exactly what your project needs without overstocking, or stock up in 10-packs for workshop use.
Closed-end domed head covers the thread tip for a tidy finish. Metric system measurement throughout — straightforward sizing for metric-standard builds and equipment.
| Thread Standard | Metric (ISO) |
|---|---|
| Thread Diameter Options | M5, M6, M8, M10 |
| Thread Length Options | 15 mm, 20 mm, 25 mm, 30 mm, 35 mm, 40 mm, 50 mm, 60 mm, 65 mm, 70 mm |
| Thread Pitch | See variant options (standard coarse pitch per diameter) |
| Head Style | Domed, pentagram star shape |
| Head Diameter | Approximately 25 mm (~1 in) |
| Head Material | Black plastic |
| Shank Material | Carbon steel |
| Grade | Grade 4.8 |
| Drive Style | Thumb (hand-tightened, no tool required) |
| End Type | Closed |
| Head Color | Black |
| System of Measurement | Metric |
| Pack Quantity Options | 1 Pcs, 2 Pcs, 5 Pcs, 10 Pcs |
Match the thread diameter (M5, M6, M8, or M10) to your existing threaded hole or nut size. For thread length, measure the depth of the threaded hole or the thickness of the material being clamped, then add 3–5 mm of engagement. For through-hole applications, the thread length should exceed the total material thickness.
The carbon steel shank is Grade 4.8, which provides adequate clamping force for panel retention, enclosure lids, and jig fixtures when hand-tightened. These are not designed for high-torque structural joints — they are optimized for applications where hand torque is sufficient and repeated removal is expected.
The domed plastic head is designed for hand-tightening loads. Avoid using tools to drive the head — applying wrench or plier torque to the plastic head can crack it. For hand-tightening in typical panel and enclosure applications, the head provides durable service.
The carbon steel shank has standard surface treatment but is not stainless steel. For occasional indoor use in dry or low-humidity environments these are suitable. For outdoor, marine, or consistently damp environments, a stainless steel thumb screw would be a more appropriate choice.
These use standard ISO metric coarse pitch for each diameter: M5×0.8, M6×1.0, M8×1.25, M10×1.5. This is the most common pitch for general fastening applications and is compatible with standard metric nuts, inserts, and threaded holes.
Yes — the threaded shank is standard metric and compatible with any matching metric nut, T-nut, threaded insert, or tapped hole of the correct diameter and coarse pitch. They are commonly used with T-nuts in woodworking jigs and with threaded inserts in 3D-printed or aluminum enclosures.
Each variant is available in 1, 2, 5, or 10 piece packs. Select the Qty option that matches your project needs. For a single replacement or test fit, choose 1 Pcs. For workshop stock or multi-panel builds, the 5 or 10 Pcs packs offer better value per piece.
