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S20R138WE4 — COUPLING HALF,SELF-SEALING

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

S20R138WE4: COUPLING HALF,SELF-SEALING.

The COUPLING HALF,SELF-SEALING is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY BODY, thread_class: 3A ALL ENDS A, overall_length: 2.323 INCHES NOMINAL IN, connection_type: THREADED EXTERNAL BOSS FIRST FLUID END CONNECTION, connection_style: DOUBLE THREADED SECTION BOSS FITTING GASKET W/ LOCKNUT SEALING ALL ENDS, special_features: COLOR GREY. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-448-7133, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
S20R138WE4
NSN: 4730-01-448-7133
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 79326 — TRANSDIGM INC DIV ADELWIGGINS GROUP (USA)
SPECIFICATIONS
materialALUMINUM ALLOY BODY
thread_class3A ALL ENDS A
overall_length2.323 INCHES NOMINAL IN
connection_typeTHREADED EXTERNAL BOSS FIRST FLUID END CONNECTION
connection_styleDOUBLE THREADED SECTION BOSS FITTING GASKET W/ LOCKNUT SEALING ALL ENDS
special_featuresCOLOR GREY
style_designatorMALE COUPLING HALF
surface_treatmentANODIZE BODY
operating_pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size0.437 INCHES ALL ENDS IN
maximum_operating_temp-45.6 CELSIUS FIRST RESPONSE DEGC
end_item_identification1430-01-418-4396
NSN4730-01-448-7133
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: S20R138WE4 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-8625, TYPE 2, CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE BODY
•
CONNECTION STYLE: DOUBLE THREADED SECTION BOSS FITTING GASKET W/ LOCKNUT SEALING ALL ENDS
•
CONNECTION TYPE: THREADED EXTERNAL BOSS FIRST FLUID END CONNECTION
•
STYLE DESIGNATOR: MALE COUPLING HALF
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE BODY
•
OPERATING PRESSURE: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
NOMINAL THREAD SIZE: 0.437 INCHES ALL ENDS IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625, TYPE 2, CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE BODY
CONNECTION STYLEDOUBLE THREADED SECTION BOSS FITTING GASKET W/ LOCKNUT SEALING ALL ENDS
CONNECTION TYPETHREADED EXTERNAL BOSS FIRST FLUID END CONNECTION
STYLE DESIGNATORMALE COUPLING HALF
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE BODY
OVERALL LENGTH2.323 INCHES NOMINAL IN
OPERATING PRESSURE3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
NOMINAL THREAD SIZE0.437 INCHES ALL ENDS IN
MAXIMUM OPERATING TEMP-45.6 CELSIUS FIRST RESPONSE DEGC
MAXIMUM OPERATING TEMP204.0 CELSIUS SECOND RESPONSE DEGC
OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008
SUBSTITUTES & CROSS-REFERENCES 2
4730PL2072408Reference document
Same NSN cross-reference
Reference document — Informative reference only
11440115Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is S20R138WE4?
S20R138WE4 is a COUPLING HALF,SELF-SEALING.
What parts can replace S20R138WE4?
There are 2 known substitutes for S20R138WE4: 4730PL2072408, 11440115. Substitute compatibility should be verified for your specific system.
What is the NSN for S20R138WE4?
S20R138WE4 is cataloged in the U.S. Government catalog under NSN 4730-01-448-7133. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.