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When you need a fastener you can tighten and loosen by hand — without reaching for a wrench — standard hex bolts slow you down. These M6 M8 M10 thumb screws with hexalobular star disc pressure plate are designed for DIY builders, small workshop operators, and equipment assemblers who need fast, repeatable hand-tightened connections in enclosures, jigs, fixtures, and panel assemblies.
Each thumb screw combines a stainless steel threaded bolt with a wide-diameter plastic disc pressure plate (knob head). Thread sizes span M6, M8, and M10 metric; bolt lengths range from 16 mm to 90 mm (approximately 0.63 in to 3.54 in); head disc diameters are available in 25 mm, 31 mm, 38 mm, and 48 mm (approximately 0.98 in to 1.89 in). The hexalobular star recess on the bolt shank allows optional tool-assisted tightening when extra torque is needed.
Typical use cases include hand-tightened access panel fasteners on electrical enclosures, quick-release fixture clamps on woodworking jigs, and adjustable guard mounting bolts on light machinery — all scenarios where thumb screws with disc pressure plates reduce tool dependency and speed up assembly cycles.
| Type | Thumb Screw with Disc Pressure Plate (Hand Grip Knob Bolt) |
|---|---|
| Thread Standard | Metric (ISO) |
| Thread Sizes | M6, M8, M10 |
| Bolt Length Range | 16 mm – 90 mm (0.63 in – 3.54 in) |
| Head Disc Diameter Options | 25 mm, 31 mm, 38 mm, 48 mm |
| Drive Style | Hexalobular Star (Torx-compatible) |
| Bolt Material | Stainless Steel |
| Knob / Disc Material | Rigid Plastic |
| Thread Pitch | See variant options |
| Surface Finish | See variant options |
| Pack Quantity | 1 PCS / 2 PCS / 5 PCS / 10 PCS (select above) |
Select the thread size (M6, M8, or M10) to match your tapped hole or nut. Then choose a bolt length that is at least equal to the combined thickness of the parts being clamped plus the depth of the receiving thread. Finally, pick a head disc diameter (25–48 mm) based on how much grip surface you need — larger discs are easier to tighten by hand in high-torque applications.
Yes. The bolt shank features a hexalobular star (Torx-style) recess. You can use a matching star-head screwdriver or bit to apply additional torque beyond what hand tightening provides. This makes them suitable for applications where vibration or load may require a more secure fastening than finger-tight alone.
The threaded bolt portion is stainless steel, which offers good corrosion resistance for indoor workshop, light industrial, and dry outdoor environments. The plastic disc knob is not affected by surface rust. For harsh outdoor or high-humidity environments, verify suitability before use and consider applying a thread sealant if needed.
The head disc diameter determines how much surface area your fingers contact when tightening. A 25 mm disc is compact and suited for tight spaces; a 48 mm disc provides significantly more leverage and is easier to tighten firmly by hand. Choose a larger disc when you need higher clamping force without tools, and a smaller disc when panel clearance is limited.
Yes. M6, M8, and M10 are standard ISO metric thread sizes compatible with any metric nut, insert, or tapped hole of the matching diameter and pitch. Always confirm the thread pitch of your existing hardware matches the screw before ordering — standard coarse pitch is most common for these sizes.
These thumb screws are well suited for hand-tightened access panels on enclosures and control boxes, quick-release fixture clamps on woodworking or metalworking jigs, adjustable guard mounting on light machinery, electronics chassis assembly, and any application where frequent removal and reinstallation without tools is an advantage. They are not recommended for high-vibration or structural load-bearing connections without additional locking measures.
For a single replacement or trial, the 1 or 2-piece pack is the most economical choice. For a project requiring multiple fastening points — such as a 4-panel enclosure — the 5 or 10-piece pack offers better per-unit value. Workshop stock buyers typically choose the 10-piece pack to keep common sizes on hand for ongoing builds and repairs.
