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2AH537 — COUPLING,PIPE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

2AH537: COUPLING,PIPE.

The COUPLING,PIPE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, connection_type: THREADED EXTERNAL PIPE FIRST END, connection_style: GROOVED (PIPE) SECOND END, style_designator: GROOVED AND THREADED EXTERNAL, nominal_thread_size: 2.000 INCHES FIRST END IN, nominal_overall_length: 4.000 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-153-9399, 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
2AH537
NSN: 4730-01-153-9399
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 45152 — OSHKOSH CORP (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
connection_typeTHREADED EXTERNAL PIPE FIRST END
connection_styleGROOVED (PIPE) SECOND END
style_designatorGROOVED AND THREADED EXTERNAL
nominal_thread_size2.000 INCHES FIRST END IN
nominal_overall_length4.000 INCHES IN
end_item_identificationHEMTT FAMILY (HEAVY EXPANDED MOBILITY TACTICAL TRUCKS)
thread_series_designatorNPT FIRST END
nominal_pipe_size_accommodated2.000 INCHES SECOND END IN
NSN4730-01-153-9399
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 2AH537 · 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
•
NOMINAL PIPE SIZE ACCOMMODATED: 2.000 INCHES SECOND END IN
•
CONNECTION STYLE: GROOVED (PIPE) SECOND END
•
NOMINAL OVERALL LENGTH: 4.000 INCHES IN
•
CONNECTION TYPE: UNTHREADED EXTERNAL PIPE SECOND END
•
STYLE DESIGNATOR: GROOVED AND THREADED EXTERNAL
•
NOMINAL THREAD SIZE: 2.000 INCHES FIRST END IN
TECHNICAL CHARACTERISTICS
NOMINAL PIPE SIZE ACCOMMODATED2.000 INCHES SECOND END IN
CONNECTION STYLEGROOVED (PIPE) SECOND END
CONNECTION STYLEPLAIN (PIPE) FIRST END
NOMINAL OVERALL LENGTH4.000 INCHES IN
CONNECTION TYPEUNTHREADED EXTERNAL PIPE SECOND END
CONNECTION TYPETHREADED EXTERNAL PIPE FIRST END
STYLE DESIGNATORGROOVED AND THREADED EXTERNAL
NOMINAL THREAD SIZE2.000 INCHES FIRST END IN
END ITEM IDENTIFICATIONHEMTT FAMILY (HEAVY EXPANDED MOBILITY TACTICAL TRUCKS)
MATERIALSTEEL CORROSION RESISTING OVERALL
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 3
45A291-P1Reference document
Same NSN cross-reference
Reference document — Secondary reference
2228670Reference document
Same NSN cross-reference
Reference document — Secondary reference
45A291Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2AH537?
2AH537 is a COUPLING,PIPE.
What parts can replace 2AH537?
There are 3 known substitutes for 2AH537: 45A291-P1, 2228670, 45A291. Substitute compatibility should be verified for your specific system.
What is the NSN for 2AH537?
2AH537 is cataloged in the U.S. Government catalog under NSN 4730-01-153-9399. 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.