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1551AS305 — SLEEVE,COMPRESSION,TUBE-HOSE FIT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

1551AS305: SLEEVE,COMPRESSION,TUBE-HOSE FIT.

SLEEVE,COMPRESSION,TUBE-HOSE FIT. Key specifications include material: STEEL CORROSION RESISTING OVERALL, criticality_code_justification: ZZZY, reference_number_differentiating_characteristics: SPECIAL CLEAN FOR LOX SERVICE IN ACCORDANCE WITH 1552AS201. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-301-2918, 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
1551AS305
NSN: 4730-01-301-2918
NIINs: 013012918, 013013057, 013013058
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 30003 — NAVAL AIR SYSTEMS COMMAND MANAGED ORIGINAL DESIGN ACTIVITY NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
criticality_code_justificationZZZY
reference_number_differentiating_characteristicsSPECIAL CLEAN FOR LOX SERVICE IN ACCORDANCE WITH 1552AS201
NSN4730-01-301-2918
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1551AS305 · 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
•
CRITICALITY CODE JUSTIFICATION: ZZZY
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: SPECIAL CLEAN FOR LOX SERVICE IN ACCORDANCE WITH 1552AS201
TECHNICAL CHARACTERISTICS
CRITICALITY CODE JUSTIFICATIONZZZY
MATERIALSTEEL CORROSION RESISTING OVERALL
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSSPECIAL CLEAN FOR LOX SERVICE IN ACCORDANCE WITH 1552AS201
SUBSTITUTES & CROSS-REFERENCES 3
SS-403-1BQReference document
Same NSN cross-reference
Reference document — Design control — primary reference
1551AS305-3Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
SS-402-1BQReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 1551AS305?
1551AS305 is a SLEEVE,COMPRESSION,TUBE-HOSE FIT.
What parts can replace 1551AS305?
There are 3 known substitutes for 1551AS305: SS-403-1BQ, 1551AS305-3, SS-402-1BQ. Substitute compatibility should be verified for your specific system.
What is the NSN for 1551AS305?
1551AS305 is cataloged in the U.S. Government catalog under NSN 4730-01-301-2918. 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.