4mm OD x 1/8 in. Male NPT Adapter, Nickel-Plated
4mm OD x 1/8 in. Male NPT Adapter, Nickel-Plated
Overview
The Midland 20630N is a straight male adapter joining a 4 mm push-to-connect tube port to a 1/8 in. male global thread. The nickel-plated brass body measures 0.702 in. long with a 0.429 in. hex, making it a compact way to land metric tubing on threaded ports in pneumatic and instrumentation assemblies.
Technical Specifications
| Manufacturer Part Number | 20630N |
| Fitting Type | Straight Male Adapter |
| Tube Size | 4 mm push-to-connect |
| Thread Size | 1/8 in. Male Global Thread |
| Pressure Rating | 290 psi |
| Temperature Range | -4°F to 176°F |
Materials of Construction
| Body | Nickel-Plated Brass |
| Finish | Nickel Plating |
| Connection | Push-to-Connect collet x Male Global Thread |
Typical Applications
Used on metric pneumatic equipment, lab instruments, and OEM machinery imported with 4 mm tubing. The 1/8 in. thread lands the line on manifolds, solenoid valves, and gauge ports where space is tight.
Cross-Reference and Interchange
This 4 mm male adapter cross-references to these competitor and industry part numbers: 0441367, 268PPNI-4MM-A, 268PPNI-4MMX1/8, 50000N-4-1/8. Replacing one of these? Match nominal size, connections, and rating, or send us your part number and we will confirm the interchange.
Sizing and Installation Resources
- Push-to-Connect Fittings Selection Guide
- NPT Thread Tightening: Turns Past Hand Tight
- Pipe Size Reference Chart
- Teflon Tape vs. Pipe Dope
Frequently Asked Questions
Does the 4 mm port fit 1/8 in. tubing?
No. 4 mm and 1/8 in. (about 3.18 mm) OD are not interchangeable; use true 4 mm OD tubing for a reliable seal.
What thread is on the male end?
A 1/8 in. global thread, which seats on tapered or O-ring ports common on metric-spec equipment.
Do I need thread sealant?
On tapered NPT-style ports, yes; on O-ring or cone-seal ports, no sealant is needed.
WARNING: This product can expose you to chemicals, including lead, known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.