PartsTable
Technical Data Sheet
4074598 ✓ 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

ADAPTER,STRAIGHT,FLANGE TO BOSS. Key specifications include material: TITANIUM ALLOY OVERALL, seat_angle: 37.0 DEGREES FIRST END, thread_class: 3A ALL ENDS A, connection_type: THREADED EXTERNAL TUBE FIRST END, connection_style: GASKET SEAL (BOSS) SECOND END, special_features: U/O F100PW220 ACFT ENG. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-283-5935, 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
4074598
NSN: 4730-01-283-5935
FSC: 4730
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialTITANIUM ALLOY OVERALL
seat_angle37.0 DEGREES FIRST END
thread_class3A ALL ENDS A
connection_typeTHREADED EXTERNAL TUBE FIRST END
connection_styleGASKET SEAL (BOSS) SECOND END
special_featuresU/O F100PW220 ACFT ENG
nominal_thread_size0.500 INCHES ALL ENDS IN
nominal_overall_length1.149 INCHES IN
thread_series_designatorUNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS
specification/standard_data81343-AS933 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION
material_document_and_classificationAMS4928 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
nominal_outside_diameter_tube_accommodated0.3125 INCHES FIRST END IN
NSN4730-01-283-5935
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 4074598 · 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
CONNECTION STYLE: FLARED (TUBE) FIRST END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.3125 INCHES FIRST END IN
CONNECTION TYPE: THREADED EXTERNAL BOSS SECOND END
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS
THREAD CLASS: 3A ALL ENDS A
MATERIAL DOCUMENT AND CLASSIFICATION: AMS4928 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL: TITANIUM ALLOY OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
CONNECTION STYLEFLARED (TUBE) FIRST END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.3125 INCHES FIRST END IN
CONNECTION TYPETHREADED EXTERNAL BOSS SECOND END
SPECIAL FEATURESU/O F100PW220 ACFT ENG
THREAD SERIES DESIGNATORUNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS
THREAD CLASS3A ALL ENDS A
MATERIAL DOCUMENT AND CLASSIFICATIONAMS4928 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALTITANIUM ALLOY OVERALL
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST END
NOMINAL THREAD SIZE0.500 INCHES ALL ENDS IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
AS933Interchangeable
interchangeable cross-reference
interchangeable
MS24487D12Interchangeable
interchangeable cross-reference
interchangeable
AS933D12Interchangeable
interchangeable cross-reference
interchangeable
MS24487D4Interchangeable
interchangeable cross-reference
interchangeable
MS24487D5Interchangeable
interchangeable cross-reference
interchangeable
AS933D05Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4074598?
4074598 is a ADAPTER,STRAIGHT,FLANGE TO BOSS.
What parts can replace 4074598?
There are 22 known substitutes for 4074598: AS933, MS24487D12, AS933D12 and 19 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4074598?
4074598 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-283-5935. This indicates validated use in U.S. government and defense supply chains.
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