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AS4859R02 ✓ Verified by PartsTable
— · HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

The COUPLING,PIPE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 347 OVERALL, connection_type: THREADED INTERNAL PIPE ALL ENDS, connection_style: PLAIN (PIPE) ALL ENDS, style_designator: RIGID, SHORT CENTER WRENCHING FACILITY, surface_treatment: PASSIVATE OVERALL, nominal_thread_size: 0.250 INCHES ALL ENDS IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-541-8285, 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
AS4859R02
NSN: 4730-00-541-8285
FSC: 4730
CAGE: 81343 — SOCIETY OF AUTOMOTIVE ENGINEERS INC (USA)
SPECIFICATIONS
materialSTEEL COMP 347 OVERALL
connection_typeTHREADED INTERNAL PIPE ALL ENDS
connection_stylePLAIN (PIPE) ALL ENDS
style_designatorRIGID, SHORT CENTER WRENCHING FACILITY
surface_treatmentPASSIVATE OVERALL
nominal_thread_size0.250 INCHES ALL ENDS IN
nominal_overall_length1.125 INCHES IN
end_item_identification26F AIRCRAFT, F-16
thread_series_designatorNPT ALL ENDS
specification/standard_data88044-AN910 GOVERNMENT STANDARD AND 81343-AS4842 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
material_document_and_classification66 FED STD SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationQQ-P-35,TYPE 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN4730-00-541-8285
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: AS4859R02 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
NOMINAL THREAD SIZE: 0.250 INCHES ALL ENDS IN
•
STYLE DESIGNATOR: RIGID, SHORT CENTER WRENCHING FACILITY
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35,TYPE 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
NOMINAL OVERALL LENGTH: 1.125 INCHES IN
•
CONNECTION STYLE: PLAIN (PIPE) ALL ENDS
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
NOMINAL THREAD SIZE0.250 INCHES ALL ENDS IN
STYLE DESIGNATORRIGID, SHORT CENTER WRENCHING FACILITY
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35,TYPE 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NOMINAL OVERALL LENGTH1.125 INCHES IN
END ITEM IDENTIFICATION26F AIRCRAFT, F-16
CONNECTION STYLEPLAIN (PIPE) ALL ENDS
SPECIFICATION/STANDARD DATA88044-AN910 GOVERNMENT STANDARD AND 81343-AS4842 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
THREAD SERIES DESIGNATORNPT ALL ENDS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
AN910-10DInterchangeable
interchangeable cross-reference
interchangeable
AS4859D10Interchangeable
interchangeable cross-reference
interchangeable
AS4842Interchangeable
interchangeable cross-reference
interchangeable
MIL-F-5509Interchangeable
interchangeable cross-reference
interchangeable
AS4859Interchangeable
interchangeable cross-reference
interchangeable
AN910-6Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AS4859R02?
AS4859R02 is a COUPLING,PIPE.
What parts can replace AS4859R02?
There are 19 known substitutes for AS4859R02: AN910-10D, AS4859D10, AS4842 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AS4859R02?
AS4859R02 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-541-8285. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026