M3 Precision Flow Restrictor Screws
Compact 304 stainless steel flow restrictor screws featuring precision fixed orifices from 0.3 to 1.0 mm. Designed with an M3 × 0.5 external thread and internal hex socket for installation in compact flow control assemblies.
- Material: 304 Stainless Steel
- Thread Size: M3 × 0.5
- Orifice Diameter: 0.3–1.0 mm
- Hex Socket Size: 1.5 mm
- Overall Length: 4 mm
- Design: Fixed Through-Hole Orifice
M3 Flow Restrictor Screw Dimensions
Dimension labels A–D match the product drawing. Thread OD, hex socket, overall length, and orifice diameter are listed separately to avoid confusion.
| Product Type | Fixed Orifice Flow Restrictor Screw |
|---|---|
| Material | 304 Stainless Steel |
| Thread Size (A) | M3 |
| Thread Pitch | 0.5 mm |
| Thread Outside Diameter | 3 mm |
| Hex Socket Size (C) | 1.5 mm |
| Overall Length (B) | 4 mm |
| Orifice Diameter (D) | 0.3–1.0 mm |
| Drive Type | Internal Hex Socket |
| Orifice Design | Fixed Through-Hole |
M3 Orifice Diameter Options
Choose from eight standard orifice diameters to match your flow restriction requirements. Selection is for inquiry routing only — no inferred flow, pressure drop, or Cv values.
No orifice diameter selected — you can still request a quote.
Key Features of M3 Precision Orifice Screws
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Precision Fixed Orifice
Eight standard bore sizes from 0.3 to 1.0 mm for fixed flow restriction requirements.
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Internal Hex Socket
A 1.5 mm internal hex drive enables installation in compact threaded assemblies.
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M3 Metric Thread
Standard M3 × 0.5 external threading with a compact 4 mm overall length.
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304 Stainless Steel Construction
Manufactured from 304 stainless steel for industrial component applications.
Applications of M3 Flow Restrictor Screws
Potential application directions. Confirm media compatibility, pressure, temperature, and duty conditions before specifying.
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Pneumatic Systems
Fixed orifice components for compact pneumatic flow restriction assemblies.
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Instrumentation
Miniature threaded restrictors for compatible gas measurement and control assemblies.
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Industrial Automation
Compact flow restriction elements for automation equipment and control modules.
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Gas Flow Control Assemblies
Threaded orifice screws for applications requiring a fixed flow passage.
These application notes are directional only. HENGTROL does not claim medical certification or use in any specific customer device on this page.
Explore Other Flow Restrictor Screw Sizes
Need Custom Flow Restrictor Screws?
Looking for a specific orifice diameter, thread size or material? Share your drawings and application requirements with our team to discuss available manufacturing options.
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