Custom Brass Knurled Thumb Screws with Round Head for Tool-Free Hand Adjustment
Frequent adjustment becomes easier when a fastener can be operated directly by hand. This brass thumb screw features a wide round head that provides a comfortable gripping surface without requiring a screwdriver or wrench.
Fine edge knurling can be added around the head to improve grip while maintaining a clean appearance. The screw is suitable for covers, panels, instruments, fixtures, small machinery and assemblies that require repeated installation or position adjustment.
The component is manufactured by CNC turning, thread machining and knurling. Its head diameter, profile, edge treatment and threaded section can be adapted to the customer's mounting structure.
Natural brass provides a warm decorative appearance and good machinability. Nickel plating, chrome plating and other finishes may be selected when a different color or improved surface protection is required.
Product Specifications：
| Item | Available Options |
|---|---|
| Product Type | Knurled thumb screw / hand-tightening screw |
| Material | Brass, stainless steel, aluminum or carbon steel |
| Head Shape | Round flat head, domed head or custom |
| Grip Style | Fine knurl, straight knurl, diamond knurl or smooth edge |
| Thread Standard | Metric, UNC, UNF or custom |
| Thread Size | Custom according to drawing |
| Thread Length | Custom |
| Manufacturing Process | CNC turning, threading, knurling and polishing |
| Dimensional Tolerance | Drawing-specific; ±0.01 mm–±0.05 mm for selected dimensions |
| Surface Finish | Natural brass, polished, nickel plated or chrome plated |
| Installation | Manual tightening and removal |
| Application | Panels, instruments, fixtures and adjustable assemblies |
Custom Options：
| Feature | Required Information |
| Head Diameter | Required outside diameter |
| Head Thickness | Finished head height |
| Head Profile | Flat, domed, stepped or custom |
| Knurling | Pattern, pitch and knurled area |
| Thread Size | Diameter, pitch and standard |
| Thread Length | Full threaded length |
| Thread End | Flat, chamfered, dog point or custom |
| Material | Required alloy or material grade |
| Surface Finish | Natural, polished, plated or custom |
| Logo or Marking | Engraving or head marking if required |
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