US2-M
Heavy-Duty Inner-Thread Metric Fittings for Flexible Conduit Termination
FLEXA US2-M fittings are straight metal-body conduit connectors with a female Metric inner thread for terminating compatible flexible conduit at equipment or connection points with an external male thread. Their nickel-plated brass construction provides a durable threaded connection and supports bonding continuity where required by the correctly assembled conduit system.
US2-M fittings are available for selected FLEXA SPR, FLEXAgraff, and AIRflex conduit families, including non-liquidtight metal, liquidtight metal, and selected liquidtight all-plastic conduit constructions. The female inner-thread design provides an alternative to conventional external-thread fittings where the enclosure, equipment, adaptor, or adjoining component has a compatible male Metric thread.
Choose the US2-M fitting by compatible conduit family, conduit size, female Metric thread size, and required ingress-protection level.
Properties:
- Material: Nickel-plated brass
- Temperature Range: -40°C to +125°C
- Thread Type:: Female Metric inner thread
- Fitting Design: Heavy-duty straight metal-body fitting
- Ingress Protection: IP40 to IP65, depending on the fitting, compatible conduit, and correctly assembled connection
- Compatible FLEXA SPR conduit families: SPR-AS, SPR-VA, SPR-PA, SPR-PU-F, SPR-PVC-AS, SPR-PU-AS, SPR-CU-AS, SPR-EDU-AS
- Compatible FLEXAgraff conduit families: FLEXAgraff-PU-AS, FLEXAgraff-PU-F, FLEXAgraff-AS, FLEXAgraff-VA, FLEXAgraff-CU-AS
- Compatible FLEXA AIRflex conduit family: AIRflex-KUW-EDU
FLEXA US2-M Inner-Thread Metric Fitting Sizes
Image | Part Number | Fits Conduit Types | Thread Type | Thread Size | OD (mm) | Material | IP Rating | Package Size | Quantity | Product Details | Add to Cart |
|---|---|---|---|---|---|---|---|---|---|---|---|
 | Old: 5018.328.032 | AIRflex-GRS ⋅ AIRflex-K ⋅ AIRflex-KUW-PU-AS ⋅ AIRflex-KUW-PVC-AS | Metric | M32 x 1.5 | 36.0 | Ni-Brass | IP 54 | 10 pcs | | ||
 | Old: 5012.327.010 | FLEXAgraff-AS ⋅ FLEXAgraff-VA ⋅ SPR-AS ⋅ SPR-VA | Metric | M10 x 1.0 | 10 | Ni-Brass | IP 40 | 25 pcs | | ||
 | Old: 5012.327.012 | FLEXAgraff-AS ⋅ FLEXAgraff-PU-AS ⋅ FLEXAgraff-PU-F ⋅ FLEXAgraff-VA ⋅ SPR-AS ⋅ SPR-VA | Metric | M12 x 1.5 | 14 | Ni-Brass | IP 40 | 25 pcs | | ||
 | Old: 5012.327.016 | FLEXAgraff-AS ⋅ FLEXAgraff-VA ⋅ SPR-AS ⋅ SPR-VA | Metric | M16 x 1.5 | 17 | Ni-Brass | IP 40 | 25 pcs | | ||
 | Old: 5012.327.020 | FLEXAgraff-AS ⋅ FLEXAgraff-VA ⋅ SPR-AS ⋅ SPR-VA | Metric | M20 x 1.5 | 21 | Ni-Brass | IP 40 | 25 pcs | | ||
 | Old: 5012.327.025 | FLEXAgraff-AS ⋅ FLEXAgraff-VA ⋅ SPR-AS ⋅ SPR-VA | Metric | M25 x 1.5 | 27 | Ni-Brass | IP 40 | 10 pcs | | ||
 | Old: 5012.327.032 | FLEXAgraff-AS ⋅ FLEXAgraff-VA ⋅ SPR-AS ⋅ SPR-VA | Metric | M32 x 1.5 | 36 | Ni-Brass | IP 40 | 10 pcs | | ||
 | Old: 5012.327.040 | FLEXAgraff-AS ⋅ FLEXAgraff-VA ⋅ SPR-AS ⋅ SPR-VA | Metric | M40 x 1.5 | 45 | Ni-Brass | IP 40 | 5 pcs | | ||
 | Old: 5012.327.050 | FLEXAgraff-AS ⋅ FLEXAgraff-VA ⋅ SPR-AS ⋅ SPR-VA | Metric | M50 x 1.5 | 56 | Ni-Brass | IP 40 | 5 pcs | | ||
 | Old: 5012.328.010 | FLEXAgraff-PU-AS ⋅ FLEXAgraff-PU-F ⋅ SPR-PA ⋅ SPR-PU-AS ⋅ SPR-PU-F ⋅ SPR-PVC-AS | Metric | M10 x 1.0 | 10 | Ni-Brass | IP 65 | 25 pcs | | ||
 | Old: 5012.328.012 | SPR-PA ⋅ SPR-PU-AS ⋅ SPR-PU-F ⋅ SPR-PVC-AS | Metric | M12 x 1.5 | 14 | Ni-Brass | IP 67 | 25 pcs | | ||
 | Old: 5012.328.016 | FLEXAgraff-PU-AS ⋅ FLEXAgraff-PU-F ⋅ SPR-PA ⋅ SPR-PU-AS ⋅ SPR-PU-F ⋅ SPR-PVC-AS | Metric | M16 x 1.5 | 17 | Ni-Brass | IP 67 | 25 pcs | | ||
 | Old: 5012.328.020 | FLEXAgraff-PU-AS ⋅ FLEXAgraff-PU-F ⋅ SPR-PA ⋅ SPR-PU-AS ⋅ SPR-PU-F ⋅ SPR-PVC-AS | Metric | M20 x 1.5 | 21 | Ni-Brass | IP 67 | 25 pcs | | ||
 | Old: 5012.328.025 | SPR-PA ⋅ SPR-PU-AS ⋅ SPR-PU-F ⋅ SPR-PVC-AS | Metric | M25 x 1.5 | 27 | Ni-Brass | IP 67 | 10 pcs | | ||
 | Old: 5012.328.032 | FLEXAgraff-PU-AS ⋅ FLEXAgraff-PU-F ⋅ SPR-PA ⋅ SPR-PU-AS ⋅ SPR-PU-F ⋅ SPR-PVC-AS | Metric | M32 x 1.5 | 36 | Ni-Brass | IP 67 | 10 pcs | | ||
 | Old: 5012.328.040 | FLEXAgraff-PU-AS ⋅ FLEXAgraff-PU-F ⋅ SPR-PA ⋅ SPR-PU-AS ⋅ SPR-PU-F ⋅ SPR-PVC-AS | Metric | M40 x 1.5 | 45 | Ni-Brass | IP 67 | 5 pcs | | ||
 | Old: 5012.328.050 | FLEXAgraff-PU-AS ⋅ FLEXAgraff-PU-F ⋅ SPR-PA ⋅ SPR-PU-AS ⋅ SPR-PU-F ⋅ SPR-PVC-AS | Metric | M50 x 1.5 | 56 | Ni-Brass | IP 67 | 5 pcs | | ||
 | Old: 5012.339.012 | FLEXAgraff-AS ⋅ FLEXAgraff-VA | Metric | M12 x 1. 5 | 14. 0 | Ni-Brass | IP 40 | 25 pcs | | ||
 | Old: 5012.339.025 | FLEXAgraff-AS ⋅ FLEXAgraff-VA | Metric | M25 x 1. 5 | 27. 0 | Ni-Brass | IP 40 | 10 pcs | | ||
 | Old: 5012.340.025 | FLEXAgraff-PU-AS ⋅ FLEXAgraff-PU-F | Metric | M25 x 1. 5 | 27. 0 | Ni-Brass | IP 65 | 10 pcs | | ||
 | Old: 5018.327.012 | FLEXAgraff-CU-AS | Metric | M12 x 1. 5 | 14. 0 | Ni-Brass | IP 54 | 10 pcs | | ||
 | Old: 5018.328.010 | AIRflex-GRS ⋅ AIRflex-K ⋅ AIRflex-KUW-PU-AS ⋅ AIRflex-KUW-PVC-AS | Metric | M10 x 1.0 | 10.0 | Ni-Brass | IP 54 | 50 pcs | | ||
 | Old: 5018.328.012 | AIRflex-GRS ⋅ AIRflex-K ⋅ AIRflex-KUW-PU-AS ⋅ AIRflex-KUW-PVC-AS | Metric | M12 x 1.5 | 14.0 | Ni-Brass | IP 54 | 10 pcs | | ||
 | Old: 5018.328.016 | AIRflex-GRS ⋅ AIRflex-K ⋅ AIRflex-KUW-PU-AS ⋅ AIRflex-KUW-PVC-AS | Metric | M16 x 1.5 | 17.0 | Ni-Brass | IP 54 | 50 pcs | | ||
 | Old: 5018.328.020 | AIRflex-GRS ⋅ AIRflex-K ⋅ AIRflex-KUW-PU-AS ⋅ AIRflex-KUW-PVC-AS | Metric | M20 x 1.5 | 21.0 | Ni-Brass | IP 54 | 50 pcs | | ||
 | Old: 5018.328.025 | SPR-CU-AS ⋅ SPR-EDU-AS | Metric | M25 x 1. 5 | 27. 0 | Ni-Brass | IP 54 | 10 pcs | | ||
 | Old: 5018.328.040 | FLEXAgraff-CU-AS ⋅ SPR-CU-AS ⋅ SPR-EDU-AS | Metric | M40 x 1. 5 | 45. 0 | Ni-Brass | IP 54 | 5 pcs | | ||
 | Old: 5018.328.050 | AIRflex-GRS ⋅ AIRflex-K ⋅ AIRflex-KUW-PU-AS ⋅ AIRflex-KUW-PVC-AS | Metric | M50 x 1.5 | 56.0 | Ni-Brass | IP 54 | 10 pcs | | ||
 | Old: 5018.335.016 | AIRflex-KUW-EDU | Metric | M16 x 1. 5 | 17. 0 | Ni-Brass | IP 54 | 10 pcs | | ||
 | Old: 5018.335.020 | AIRflex-KUW-EDU | Metric | M20 x 1. 5 | 21. 0 | Ni-Brass | IP 54 | 10 pcs | | ||
 | Old: 5018.335.025 | AIRflex-KUW-EDU | Metric | M25 x 1. 5 | 27. 0 | Ni-Brass | IP 54 | 10 pcs | | ||
 | Old: 5018.335.040 | AIRflex-KUW-EDU | Metric | M40 x 1. 5 | 45. 0 | Ni-Brass | IP 54 | 5 pcs | | ||
 | Old: 5018.335.050 | AIRflex-KUW-EDU | Metric | M50 x 1. 5 | 56. 0 | Ni-Brass | IP 54 | 5 pcs | | ||
 | Old: 5018.340.025 | FLEXAgraff-CU-AS | Metric | M25 x 1. 5 | 27. 0 | Ni-Brass | IP 54 | 10 pcs | |
How to Choose a FLEXA US2-M Fitting
Select the correct US2-M fitting by matching the following:
- Conduit family — confirm compatibility with the selected FLEXA SPR, FLEXAgraff, or AIRflex conduit construction.
- Conduit size — match the fitting to the conduit’s nominal size and outside diameter.
- Female Metric thread size — match the fitting’s inner thread to the external male thread on the equipment or connection point.
- Connection configuration — use US2-M where the installation requires a female-thread fitting instead of a conventional external male thread.
- Ingress protection — confirm the IP rating of the complete fitting-and-conduit combination for the installation environment.
For installations requiring an external male Metric thread, select the corresponding US-M fitting family.
Frequently Asked Questions About US2-M Fittings
What is a FLEXA US2-M fitting?
A FLEXA US2-M fitting is a straight nickel-plated brass conduit connector with a female Metric inner thread. It is used to terminate compatible flexible conduit at equipment, adaptors, or connection points with an external male Metric thread.
What is the advantage of an inner-thread fitting?
The female inner thread allows the fitting to connect directly to a compatible external male thread. This provides an alternative where a conventional external-thread fitting cannot be used.
Which conduits work with US2-M fittings?
US2-M fittings are available for selected FLEXA SPR, FLEXAgraff, and AIRflex conduit families. Compatibility depends on the exact fitting size, conduit family, and conduit construction.
Can US2-M fittings be used with jacketed conduits?
Yes. The US2-M family includes fittings for selected jacketed and unjacketed FLEXA conduit constructions. Confirm the exact fitting and conduit compatibility before selection.
What IP rating do US2-M fittings provide?
Available US2-M fitting combinations range from IP40 to IP65. The achieved rating depends on the selected fitting, compatible conduit, correct assembly, and installation conditions.
How do I choose the correct female Metric thread size?
Match the fitting’s female Metric inner thread to the external male thread on the equipment, adaptor, or connection point. Then confirm that the same fitting is compatible with the selected conduit family and conduit diameter.
What is the difference between US2-M and US-M fittings?
US2-M fittings have a female Metric inner thread for connection to an external male thread. US-M fittings have an external male Metric thread for installation into a female-threaded enclosure or equipment entry.
Need Help Selecting a FLEXA US2-M Fitting?
IBIS can help identify the correct US2-M fitting based on conduit family, conduit size, female Metric thread, ingress-protection requirement, and connection configuration.
Related Products & Resources
- Straight Metal Body Conduit Fittings
- 90° Elbow Metal Body Conduit Fittings
- FLEXA US-M Heavy-Duty Metric-Thread Fittings
- FLEXA USDR-M Fittings with a Swivelling Metric Thread
- Compatible FLEXA SPR Flexible Metal Conduits
- Compatible FLEXAgraff Flexible Metal Conduits
- FLEXA AIRflex-KUW-EDU Conduit
- Sealing Washers and O-Rings for Threaded Conduit Fittings
- Locknuts and Counternuts for Securing Conduit Fittings