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NTH 90654 — ADAPTER,STRAIGHT,TUBE TO HOSE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

NTH 90654: ADAPTER,STRAIGHT,TUBE TO HOSE.

The ADAPTER,STRAIGHT,TUBE TO HOSE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, connection_type: THREADED INTERNAL PIPE FIRST END, special_features: COUPLER MAXIMUM PRESSURE 260.0 POUNDS PER SQUARE INCH LBS, thread_series_designator: NPT FIRST END, nominal_pipe_size_accommodated: 0.375 INCHES FIRST END IN, part_name_assigned_by_controlling_agency: AIR HOSE COUPLER ADAPTER. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-721-4686, 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
NTH 90654
NSN: 4730-01-721-4686
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 09FG3 — NAPA AUTO PARTS (USA)
SPECIFICATIONS
materialSTEEL OVERALL
connection_typeTHREADED INTERNAL PIPE FIRST END
special_featuresCOUPLER MAXIMUM PRESSURE 260.0 POUNDS PER SQUARE INCH LBS
thread_series_designatorNPT FIRST END
nominal_pipe_size_accommodated0.375 INCHES FIRST END IN
part_name_assigned_by_controlling_agencyAIR HOSE COUPLER ADAPTER
NSN4730-01-721-4686
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: NTH 90654 · 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: 0.375 INCHES FIRST END IN
•
CONNECTION TYPE: THREADED INTERNAL PIPE FIRST END
•
MATERIAL: STEEL OVERALL
•
THREAD SERIES DESIGNATOR: NPT FIRST END
TECHNICAL CHARACTERISTICS
NOMINAL PIPE SIZE ACCOMMODATED0.375 INCHES FIRST END IN
CONNECTION TYPETHREADED INTERNAL PIPE FIRST END
SPECIAL FEATURESCOUPLER MAXIMUM PRESSURE 260.0 POUNDS PER SQUARE INCH LBS
PART NAME ASSIGNED BY CONTROLLING AGENCYAIR HOSE COUPLER ADAPTER
MATERIALSTEEL OVERALL
THREAD SERIES DESIGNATORNPT FIRST END
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is NTH 90654?
NTH 90654 is a ADAPTER,STRAIGHT,TUBE TO HOSE.
What is the NSN for NTH 90654?
NTH 90654 is cataloged in the U.S. Government catalog under NSN 4730-01-721-4686. 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.