Metric-Thread Strain-Relief Fittings for EX-Area Conduit Installations

Flexa LogoFLEXA USZ-EX-M fittings are straight metal-body conduit connectors with an external Metric thread and integrated strain relief. They are designed to secure compatible flexible metal conduit where pull forces, vibration, or cable movement could place additional stress on the conduit connection.

USZ-EX-M fittings are intended for selected FLEXA conduit systems used in applicable EX-area installations. Their nickel-plated brass construction provides a durable metal-threaded connection, while the strain-relief design helps protect the conduit and enclosed wiring from excessive mechanical loading.

Choose the USZ-EX-M fitting by compatible conduit family, conduit size, Metric thread size, strain-relief requirement, and EX-area installation conditions.

Properties:

FLEXA USZ-EX-M Metric-Thread Strain-Relief Fitting Sizes

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Old:
5023.327.020
FLEXAgraff-AS
FLEXAgraff-VA
SPR-AS
SPR-VA
Metric
M20 x 1. 5
21. 0
Ni-Brass
IP 40
10 pcs
Max: 100000
Min: 1
Step: 1
Old:
5023.327.120
FLEXAgraff-AS
FLEXAgraff-VA
SPR-AS
SPR-VA
Metric
M20 x 1. 5
17. 0
Ni-Brass
IP 40
10 pcs
Max: 100000
Min: 1
Step: 1
Old:
5023.327.125
FLEXAgraff-AS
FLEXAgraff-VA
SPR-AS
SPR-VA
Metric
M25 x 1. 5
21. 0
Ni-Brass
IP 40
10 pcs
Max: 100000
Min: 1
Step: 1
Old:
5023.327.132
SPR-AS
SPR-VA
Metric
M32 x 1. 5
27. 0
Ni-Brass
IP 40
10 pcs
Max: 100000
Min: 1
Step: 1
Old:
5023.339.132
FLEXAgraff-AS
FLEXAgraff-VA
Metric
M32 x 1. 5
27. 0
Ni-Brass
IP 40
10 pcs
Max: 100000
Min: 1
Step: 1
Old:
5024.328.020
SPR-CU-AS
SPR-EDU-AS
Metric
M20 x 1. 5
21. 0
Ni-Brass
IP 40
10 pcs
Max: 100000
Min: 1
Step: 1
Old:
5024.328.120
SPR-CU-AS
SPR-EDU-AS
Metric
M20 x 1. 5
17. 0
Ni-Brass
IP 40
10 pcs
Max: 100000
Min: 1
Step: 1
Old:
5024.328.125
SPR-CU-AS
SPR-EDU-AS
Metric
M25 x 1. 5
21. 0
Ni-Brass
IP 40
10 pcs
Max: 100000
Min: 1
Step: 1
Old:
5024.328.132
SPR-CU-AS
SPR-EDU-AS
Metric
M32 x 1. 5
27. 0
Ni-Brass
IP 40
10 pcs
Max: 100000
Min: 1
Step: 1

How to Choose a FLEXA USZ-EX-M Fitting

Select the correct USZ-EX-M fitting by matching the following:

  1. Conduit family — confirm compatibility with one of the listed FLEXA SPR or FLEXAgraff conduit families.
  2. Conduit size — match the fitting to the conduit’s nominal size and outside diameter.
  3. Metric thread size — select the thread required by the enclosure, junction box, or equipment entry.
  4. Strain-relief requirement — use this family where pull forces, vibration, or cable movement could stress the conduit connection.
  5. EX-area requirement — confirm that the fitting, conduit, equipment, and complete installation meet the applicable EX-area requirements.
  6. Ingress protection — confirm that IP40 protection is suitable for the installation environment.

USZ-EX-M fittings are intended only for the compatible metallic conduit families listed on this page. For other conduit constructions or installations that do not require EX-area suitability, select the appropriate alternative metal-body fitting family.

Frequently Asked Questions About USZ-EX-M Fittings

A FLEXA USZ-EX-M fitting is a straight nickel-plated brass conduit connector with an external Metric thread and integrated strain relief. It is intended for selected FLEXA conduit systems used in applicable EX-area installations.

The integrated strain relief helps reduce mechanical stress at the conduit connection when the installation is exposed to pulling forces, vibration, or cable movement.

USZ-EX-M fittings are available for SPR-AS, SPR-VA, SPR-CU-AS, SPR-EDU-AS, FLEXAgraff-AS, and FLEXAgraff-VA. Compatibility depends on the exact fitting size and conduit construction.

No. USZ-EX-M fittings are intended for the listed unjacketed metallic conduit families. Select another fitting family for jacketed conduit constructions.

No. Suitability depends on the fitting rating, compatible conduit, equipment classification, applicable EX-area requirements, and the complete installed system. Confirm the relevant approvals and installation requirements before selection.

USZ-EX-M fittings provide IP40 protection when correctly matched and assembled with a compatible conduit.

Match the fitting’s external Metric thread to the enclosure or equipment entry, then confirm compatibility with the selected conduit family and conduit diameter.

Need Help Selecting a FLEXA USZ-EX-M Fitting?

IBIS can help identify the correct USZ-EX-M fitting based on compatible conduit family, conduit size, Metric thread, strain-relief requirements, EX-area conditions, and installation needs.