US-M
Heavy-Duty Metric-Thread Fittings for Flexible Conduit Termination
FLEXA US-M fittings are straight metal-body conduit connectors with an external Metric thread for terminating compatible flexible conduit at enclosures, junction boxes, machinery, and industrial equipment. Their nickel-plated brass construction provides a durable metal-threaded connection and supports bonding continuity where required by the correctly assembled conduit system.
US-M fittings are available in a broad range of Metric thread and conduit sizes for selected FLEXA non-liquidtight metal, liquidtight metal, and liquidtight all-plastic conduit families.
Choose the US-M fitting by compatible conduit family, conduit size, Metric thread size, and required ingress-protection level.
Properties:
- Material: Nickel-plated brass
- Temperature Range: -40°C to +125°C
- Thread Type: External Metric thread
- Ingress Protection: IP40 to IP67, 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, SPR-PVC-EDU-AS
- Compatible FLEXAgraff conduit families: FLEXAgraff-PU-AS, FLEXAgraff-PU-F, FLEXAgraff-AS, FLEXAgraff-VA, FLEXAgraff-SI-ASF, FLEXAgraff-CU-AS
- Compatible FLEXA AIRflex conduit families: AIRflex-KUW-PVC-AS, AIRflex-KUW-PU-AS, AIRflex-GRS, AIRflex-K, AIRflex-KUW-EDU
FLEXA US-M Metric-Thread 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: 5010.301.025 | FLEXAgraff-SI-ASF | Metric | M25 x 1.5 | 27 | Ni-Brass | IP67 | 25 pcs | | ||
 | Old: 5010.327.010 | FLEXAgraff-AS ⋅ FLEXAgraff-VA ⋅ SPR-AS ⋅ SPR-VA | Metric | M10 x 1.0 | 10 | Ni-Brass | IP 40 | 50 pcs | | ||
 | Old: 5010.327.012 | FLEXAgraff-AS ⋅ FLEXAgraff-VA ⋅ SPR-AS ⋅ SPR-VA | Metric | M12 x 1.5 | 14 | Ni-Brass | IP 40 | 50 pcs | | ||
 | Old: 5010.327.016 | FLEXAgraff-AS ⋅ FLEXAgraff-VA ⋅ SPR-AS ⋅ SPR-VA | Metric | M16 x 1.5 | 17 | Ni-Brass | IP 40 | 50 pcs | | ||
 | Old: 5010.327.020 | FLEXAgraff-AS ⋅ FLEXAgraff-VA ⋅ SPR-AS ⋅ SPR-VA | Metric | M20 x 1.5 | 21 | Ni-Brass | IP 40 | 50 pcs | | ||
 | Old: 5010.327.025 | FLEXAgraff-AS ⋅ FLEXAgraff-VA ⋅ SPR-AS ⋅ SPR-VA | Metric | M25 x 1.5 | 27 | Ni-Brass | IP 40 | 25 pcs | | ||
 | Old: 5010.327.032 | FLEXAgraff-AS ⋅ FLEXAgraff-VA ⋅ SPR-AS ⋅ SPR-VA | Metric | M32 x 1.5 | 36 | Ni-Brass | IP 40 | 25 pcs | | ||
 | Old: 5010.327.040 | FLEXAgraff-AS ⋅ FLEXAgraff-VA ⋅ SPR-AS ⋅ SPR-VA | Metric | M40 x 1.5 | 45 | Ni-Brass | IP 40 | 20 pcs | | ||
 | Old: 5010.327.050 | FLEXAgraff-AS ⋅ FLEXAgraff-VA ⋅ SPR-AS ⋅ SPR-VA | Metric | M50 x 1.5 | 56 | Ni-Brass | IP 40 | 10 pcs | | ||
 | Old: 5010.327.163 | FLEXAgraff-AS ⋅ FLEXAgraff-VA ⋅ SPR-AS ⋅ SPR-VA | Metric | M63 x 1.5 | 56 | Ni-Brass | IP 40 | 10 pcs | | ||
 | Old: 5010.328.010 | 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 67 | 50 pcs | | ||
 | Old: 5010.328.012 | SPR-PA ⋅ SPR-PU-AS ⋅ SPR-PU-F ⋅ SPR-PVC-AS | Metric | M12 x 1.5 | 14 | Ni-Brass | IP 67 | 50 pcs | | ||
 | Old: 5010.328.016 | 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 | 50 pcs | | ||
 | Old: 5010.328.020 | 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 | 50 pcs | | ||
 | Old: 5010.328.025 | SPR-PA ⋅ SPR-PU-AS ⋅ SPR-PU-F ⋅ SPR-PVC-AS | Metric | M25 x 1.5 | 27 | Ni-Brass | IP 67 | 25 pcs | | ||
 | Old: 5010.328.032 | 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 | 25 pcs | | ||
 | Old: 5010.328.040 | 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 | 20 pcs | | ||
 | Old: 5010.328.050 | 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 | 10 pcs | | ||
 | Old: 5010.328.163 | FLEXAgraff-PU-AS ⋅ FLEXAgraff-PU-F ⋅ SPR-PA ⋅ SPR-PU-AS ⋅ SPR-PU-F ⋅ SPR-PVC-AS | Metric | M63 x 1.5 | 56 | Ni-Brass | IP 67 | 10 pcs | | ||
 | Old: 5010.330.010 | AIRflex-GRS ⋅ AIRflex-K ⋅ AIRflex-KUW-PU-AS ⋅ AIRflex-KUW-PVC-AS | Metric | M10 x 1.0 | 10 | Ni-Brass | IP 54 | 50 pcs | | ||
 | Old: 5010.330.012 | AIRflex-GRS ⋅ AIRflex-K ⋅ AIRflex-KUW-PU-AS ⋅ AIRflex-KUW-PVC-AS | Metric | M12 x 1.5 | 14 | Ni-Brass | IP 54 | 50 pcs | | ||
 | Old: 5010.330.016 | AIRflex-GRS ⋅ AIRflex-K ⋅ AIRflex-KUW-PU-AS ⋅ AIRflex-KUW-PVC-AS | Metric | M16 x 1.5 | 17 | Ni-Brass | IP 54 | 50 pcs | | ||
 | Old: 5010.330.020 | AIRflex-GRS ⋅ AIRflex-K ⋅ AIRflex-KUW-PU-AS ⋅ AIRflex-KUW-PVC-AS | Metric | M20 x 1.5 | 21 | Ni-Brass | IP 54 | 50 pcs | | ||
 | Old: 5010.330.025 | AIRflex-GRS ⋅ AIRflex-K ⋅ AIRflex-KUW-PU-AS ⋅ AIRflex-KUW-PVC-AS | Metric | M25 x 1.5 | 27 | Ni-Brass | IP 54 | 25 pcs | | ||
 | Old: 5010.330.032 | AIRflex-GRS ⋅ AIRflex-K ⋅ AIRflex-KUW-PU-AS ⋅ AIRflex-KUW-PVC-AS | Metric | M32 x 1.5 | 36 | Ni-Brass | IP 54 | 25 pcs | | ||
 | Old: 5010.330.040 | AIRflex-GRS ⋅ AIRflex-K ⋅ AIRflex-KUW-PU-AS ⋅ AIRflex-KUW-PVC-AS | Metric | M40 x 1.5 | 45 | Ni-Brass | IP 54 | 20 pcs | | ||
 | Old: 5010.330.050 | AIRflex-GRS ⋅ AIRflex-K ⋅ AIRflex-KUW-PU-AS ⋅ AIRflex-KUW-PVC-AS | Metric | M50 x 1.5 | 56 | Ni-Brass | IP 54 | 10 pcs | | ||
 | Old: 5010.330.163 | AIRflex-GRS ⋅ AIRflex-K ⋅ AIRflex-KUW-PU-AS ⋅ AIRflex-KUW-PVC-AS | Metric | M63 x 1.5 | 56 | Ni-Brass | IP 54 | 10 pcs | | ||
 | Old: 5010.335.020 | FLEXAgraff-SI-ASF | Metric | M20 x 1.5 | 21 | Ni-Brass | IP 67 | 50 pcs | | ||
 | Old: 5010.337.012 | FLEXAgraff-SI-ASF | Metric | M12 x 1.5 | 14 | Ni-Brass | IP 67 | 50 pcs | | ||
 | Old: 5010.337.016 | FLEXAgraff-SI-ASF | Metric | M16 x 1.5 | 17 | Ni-Brass | IP 67 | 50 pcs | | ||
 | Old: 5010.337.032 | FLEXAgraff-SI-ASF | Metric | M32 x 1.5 | 36 | Ni-Brass | IP 67 | 25 pcs | | ||
 | Old: 5010.337.040 | FLEXAgraff-SI-ASF | Metric | M40 x 1.5 | 45 | Ni-Brass | IP 67 | 20 pcs | | ||
 | Old: 5010.337.050 | FLEXAgraff-SI-ASF | Metric | M50 x 1.5 | 56 | Ni-Brass | IP 67 | 10 pcs | | ||
 | Old: 5010.337.163 | FLEXAgraff-SI-ASF | Metric | M63 x 1.5 | 56 | Ni-Brass | IP 67 | 10 pcs | | ||
 | Old: 5010.339.012 | FLEXAgraff-AS ⋅ FLEXAgraff-VA | Metric | M12 x 1.5 | 14 | Ni-Brass | IP 40 | 50 pcs | | ||
 | Old: 5010.339.025 | FLEXAgraff-AS ⋅ FLEXAgraff-VA | Metric | M25 x 1.5 | 27 | Ni-Brass | IP 40 | 25 pcs | | ||
 | Old: 5010.340.025 | FLEXAgraff-PU-AS ⋅ FLEXAgraff-PU-F | Metric | M25 x 1.5 | 27 | Ni-Brass | IP 67 | 25 pcs | | ||
 | Old: 5011.301.025 | SPR-PVC-EDU-AS | Metric | M25 x 1.5 | 27 | Ni-Brass | IP 54 | 25 pcs | | ||
 | Old: 5011.327.012 | FLEXAgraff-CU-AS | Metric | M12 x 1.5 | 14 | Ni-Brass | IP 67 | 50 pcs | | ||
 | Old: 5011.328.010 | FLEXAgraff-CU-AS ⋅ FLEXAhightemp ⋅ SPR-CU-AS ⋅ SPR-EDU-AS | Metric | M10 x 1.0 | 10 | Ni-Brass | IP 40 | 50 pcs | | ||
 | Old: 5011.328.012 | AIRflex-KUW-EDU ⋅ FLEXAhightemp ⋅ SPR-CU-AS ⋅ SPR-EDU-AS ⋅ SPR-PVC-EDU-AS | Metric | M12 x 1.5 | 14 | Ni-Brass | IP 40 | 50 pcs | | ||
 | Old: 5011.328.016 | FLEXAgraff-CU-AS ⋅ FLEXAhightemp ⋅ SPR-CU-AS ⋅ SPR-EDU-AS | Metric | M16 x 1.5 | 17 | Ni-Brass | IP 40 | 50 pcs | | ||
 | Old: 5011.328.020 | FLEXAgraff-CU-AS ⋅ FLEXAhightemp ⋅ SPR-CU-AS ⋅ SPR-EDU-AS | Metric | M20 x 1.5 | 21 | Ni-Brass | IP 40 | 50 pcs | | ||
 | Old: 5011.328.025 | FLEXAhightemp ⋅ SPR-CU-AS ⋅ SPR-EDU-AS | Metric | M25 x 1.5 | 27 | Ni-Brass | IP 40 | 25 pcs | | ||
 | Old: 5011.328.032 | AIRflex-KUW-EDU ⋅ FLEXAgraff-CU-AS ⋅ FLEXAhightemp ⋅ SPR-CU-AS ⋅ SPR-EDU-AS | Metric | M32 x 1.5 | 36 | Ni-Brass | IP 40 | 25 pcs | | ||
 | Old: 5011.328.040 | FLEXAgraff-CU-AS ⋅ FLEXAhightemp ⋅ SPR-CU-AS ⋅ SPR-EDU-AS | Metric | M40 x 1.5 | 45 | Ni-Brass | IP 40 | 20 pcs | | ||
 | Old: 5011.328.050 | FLEXAgraff-CU-AS ⋅ FLEXAhightemp ⋅ SPR-CU-AS ⋅ SPR-EDU-AS | Metric | M50 x 1.5 | 56 | Ni-Brass | IP 40 | 10 pcs | | ||
 | Old: 5011.328.163 | FLEXAgraff-CU-AS ⋅ FLEXAhightemp ⋅ SPR-CU-AS ⋅ SPR-EDU-AS | Metric | M63 x 1.5 | 56 | Ni-Brass | IP 40 | 10 pcs | | ||
 | Old: 5011.335.016 | AIRflex-KUW-EDU ⋅ SPR-PVC-EDU-AS | Metric | M16 x 1. 5 | 17 | Ni-Brass | IP 54 | 50 pcs | |
How to Choose a FLEXA US-M Fitting
Select the correct US-M fitting by matching all four of the following:
- Conduit family — confirm that the fitting is approved for the selected FLEXA conduit construction.
- Conduit size — match the fitting to the conduit’s nominal size and outside diameter.
- Metric thread size — select the thread required by the enclosure, junction box, or equipment entry.
- Ingress protection — confirm the IP rating of the complete fitting-and-conduit combination for the installation environment.
For applications requiring EMC performance, strain relief, an inner thread, a swivelling thread, or hygienic construction, select the corresponding special straight metal fitting family.
Frequently Asked Questions About US-M Fittings
What is a FLEXA US-M fitting?
A FLEXA US-M fitting is a straight nickel-plated brass conduit connector with an external Metric thread. It is used to terminate compatible flexible conduit at machinery, enclosures, junction boxes, and industrial equipment.
Which conduits work with US-M fittings?
US-M fittings are available for selected FLEXA non-liquidtight metal, liquidtight metal, and liquidtight all-plastic conduit families. Compatibility depends on the exact fitting size and conduit construction, so the conduit family and diameter must be confirmed before selection.
What IP rating do US-M fittings provide?
Available US-M fitting combinations range from IP40 to IP67. The achieved rating depends on the selected fitting, compatible conduit, proper assembly, and installation conditions.
How do I choose the correct Metric thread size?
Match the fitting’s Metric thread to the threaded entry on the enclosure or equipment. Also confirm that the same fitting is sized for the selected conduit family and conduit diameter.
Need Help Selecting a FLEXA US-M Fitting?
IBIS can help identify the correct US-M fitting based on conduit family, conduit size, Metric thread, required ingress protection, and installation conditions.
Related Products & Resources
- Straight Metal Body Conduit Fittings
- FLEXA USW-M 90° Elbow Fittings with Metric Threads
- FLEXA US-P Straight Metal Fittings with PG Threads
- EMC-Rated Straight Metal Fittings
- Strain-Relief Straight Metal Fittings
- Liquidtight Flexible Metal Conduits
- Non-Liquidtight Flexible Metal Conduits
- Sealing Washers and O-Rings for Threaded Conduit Fittings
- Locknuts and Counternuts for Securing Conduit Fittings