Situo Hardware specializes in custom manufacturing of 303 stainless steel M4 adjusting screw rods, threaded fine-tuning rods, free-cutting stainless steel adjusting screws, and CNC non-standard precision adjustment shafts. Our products serve automation modules, tooling fixtures, inspection jigs, precision instruments, and vision equipment fine-adjustment mechanisms.

This series of 303 stainless steel M4 adjusting screw rods are CNC precision turned from free-cutting 303 stainless steel bars. Grade 303 features excellent machinability, convenient for secondary processing such as slotting, drilling, and end face machining. Metric M4 threads are precisely formed for smooth rotation without jamming.

Multiple end configurations are available: flat end, ball end, tip end, stepped structure, slotted head, and hex socket head. Widely used for distance fine-tuning, limit pushing, tension, and height adjustment. Customization on overall length, thread length, and end shape is available for precision assemblies requiring frequent fine adjustment and secondary machining.

• Free-Cutting 303 Stainless Steel: Superior machinability compared to 304, facilitating slotting, flat milling, drilling, and grinding. Provides basic anti-rust performance suitable for precision mechanisms in indoor and dry working environments.
• Integrated CNC Machining: One-piece CNC turning ensures good straightness and controlled perpendicularity of end faces. M4 threads are fully inspected by go/no-go gauges for smooth rotation and stable repeated adjustment.
• Customizable End Configurations: Optional ends include flat, round, ball, taper, stepped limit, straight slot, inner hexagon, and outer hexagon. Single-end thread, full thread, and partial thread designs available.
• Flexible Non-Standard Customization: Custom overall length, effective M4 thread length, shaft diameter, end profile, chamfer, and relief groove. Support for prototype sampling, small trial orders, and mass continuous production.
• Optional Surface Treatment: Standard finishes include vibratory deburring and passivation. Mirror polishing available for smooth burr-free surfaces.
• Systematic Quality Control: Raw material verification, dimension inspection, M4 thread gauge test, straightness sampling, and deburring treatment ensure stable consistency and interchangeability.

• M4 fine-adjustment pushing screw rods for tooling & inspection jigs
• Height and stroke limit adjusting rods for automation and vision platforms
• Tension & clearance adjusting shafts for precision instruments
• Fine-tune mechanisms, ejector assemblies and positioning supports
• Adjustable threaded shafts requiring further secondary machining
• Miniature M4 threaded limit and adjustment components for precision machinery

Situo Hardware provides CNC custom service for 303 stainless steel M4 adjusting screw rods. The complete production process covers bar cutting, CNC turning, threading, end forming, deburring, and surface treatment. Sampling lead time: 3-5 days. All order volumes are acceptable. Dimension inspection documents and export packaging can be provided.

We optimize shaft structure and end design according to adjustment travel, load, and secondary machining demands, delivering one-stop customized solutions for M4 stainless steel adjusting screw rods.