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1551AS598-4 — ADAPTER,STRAIGHT,PIPE TO TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

1551AS598-4: ADAPTER,STRAIGHT,PIPE TO TUBE.

The ADAPTER,STRAIGHT,PIPE TO TUBE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, connection_type: UNTHREADED EXTERNAL PIPE SECOND END, connection_style: PLAIN (HOSE) SECOND END, special_features: CLEANLINESS SHALL BE IN ACCORDANCE WITH MIL-C-52211 FOR OXYGEN SERVICE, nominal_thread_size: 0.250 INCHES FIRST END IN, nominal_overall_length: 2.062 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-301-7993, 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
1551AS598-4
NSN: 4730-01-301-7993
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
materialCOPPER ALLOY OVERALL
connection_typeUNTHREADED EXTERNAL PIPE SECOND END
connection_stylePLAIN (HOSE) SECOND END
special_featuresCLEANLINESS SHALL BE IN ACCORDANCE WITH MIL-C-52211 FOR OXYGEN SERVICE
nominal_thread_size0.250 INCHES FIRST END IN
nominal_overall_length2.062 INCHES IN
thread_series_designatorNPT FIRST END
furnished_items_and_quantity1 INTERNAL FILTER
nominal_pipe_size_accommodated0.250 INCHES SECOND END IN
pipe_wall_thickness_designation_for_which_designedSCHEDULE STD SECOND END
NSN4730-01-301-7993
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1551AS598-4 · 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
•
FURNISHED ITEMS AND QUANTITY: 1 INTERNAL FILTER
•
NOMINAL PIPE SIZE ACCOMMODATED: 0.250 INCHES SECOND END IN
•
CONNECTION STYLE: PLAIN (HOSE) SECOND END
•
NOMINAL OVERALL LENGTH: 2.062 INCHES IN
•
CONNECTION TYPE: UNTHREADED EXTERNAL PIPE SECOND END
•
NOMINAL THREAD SIZE: 0.250 INCHES FIRST END IN
TECHNICAL CHARACTERISTICS
FURNISHED ITEMS AND QUANTITY1 INTERNAL FILTER
NOMINAL PIPE SIZE ACCOMMODATED0.250 INCHES SECOND END IN
CONNECTION STYLEPLAIN (HOSE) SECOND END
CONNECTION STYLEPLAIN (PIPE) FIRST END
NOMINAL OVERALL LENGTH2.062 INCHES IN
CONNECTION TYPEUNTHREADED EXTERNAL PIPE SECOND END
CONNECTION TYPETHREADED EXTERNAL PIPE FIRST END
NOMINAL THREAD SIZE0.250 INCHES FIRST END IN
PIPE WALL THICKNESS DESIGNATION FOR WHICH DESIGNEDSCHEDULE STD SECOND END
SPECIAL FEATURESCLEANLINESS SHALL BE IN ACCORDANCE WITH MIL-C-52211 FOR OXYGEN SERVICE
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
1551AS598Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
63-SF3Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1551AS598-4?
1551AS598-4 is a ADAPTER,STRAIGHT,PIPE TO TUBE.
What parts can replace 1551AS598-4?
There are 2 known substitutes for 1551AS598-4: 1551AS598, 63-SF3. Substitute compatibility should be verified for your specific system.
What is the NSN for 1551AS598-4?
1551AS598-4 is cataloged in the U.S. Government catalog under NSN 4730-01-301-7993. This indicates validated use in U.S. government and defense supply chains.
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