PartsTable
Technical Data Sheet
519-3-4 ✓ 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 RETAINER,SPRING,UPP is a the manufacturer industrial component. Key specifications include material: IRON OVERALL, seat_type: GROUND-JOINT, reducer_type: CONCENTRIC, connection_type: THREADED INTERNAL PIPE ALL ENDS, connection_style: PLAIN (PIPE) ALL ENDS, style_designator: SCREWED. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-189-2598, 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
519-3-4
NSN: 4730-00-189-2598
FSC: 4730
CAGE: 14959 — CRANE CO DIV VALVE DIV (USA)
SPECIFICATIONS
materialIRON OVERALL
seat_typeGROUND-JOINT
reducer_typeCONCENTRIC
connection_typeTHREADED INTERNAL PIPE ALL ENDS
connection_stylePLAIN (PIPE) ALL ENDS
style_designatorSCREWED
operating_pressure300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size0.750 INCHES ALL ENDS IN
coupling_flange_shapeHEXAGON
maximum_operating_temp218.0 CELSIUS SINGLE RESPONSE DEGC
nominal_overall_length2.094 INCHES IN
media_for_which_designedSTEAM SINGLE RESPONSE
NSN4730-00-189-2598
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 519-3-4 · 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
NONDEFINITIVE SPEC/STD DATA: XA TYPE
STYLE DESIGNATOR: SCREWED
MEDIA FOR WHICH DESIGNED: STEAM SINGLE RESPONSE
OPERATING PRESSURE: 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
NOMINAL THREAD SIZE: 0.750 INCHES ALL ENDS IN
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A197 ASSN STD 1ST MATERIAL RESPONSE OVERALL
NOMINAL OVERALL LENGTH: 2.094 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
NONDEFINITIVE SPEC/STD DATAXA TYPE
STYLE DESIGNATORSCREWED
MEDIA FOR WHICH DESIGNEDSTEAM SINGLE RESPONSE
OPERATING PRESSURE300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
STYLE DESIGNATORSCREWED
NOMINAL THREAD SIZE0.750 INCHES ALL ENDS IN
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A197 ASSN STD 1ST MATERIAL RESPONSE OVERALL
NOMINAL OVERALL LENGTH2.094 INCHES IN
NOMINAL THREAD SIZE0.750 INCHES ALL ENDS IN
REDUCER TYPECONCENTRIC
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
MIL-U-18250Interchangeable
interchangeable cross-reference
interchangeable
B16.39Interchangeable
interchangeable cross-reference
interchangeable
198EInterchangeable
IBM 428GB 15K RPM SAS Disk Drive 3.5 (IBM i)
interchangeable
MILU18250TYPEXAInterchangeable
interchangeable cross-reference
interchangeable
1631-400Interchangeable
interchangeable cross-reference
interchangeable
198E2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 519-3-4?
519-3-4 is a RETAINER,SPRING,UPP.
What parts can replace 519-3-4?
There are 13 known substitutes for 519-3-4: MIL-U-18250, B16.39, 198E and 10 more. Substitute compatibility should be verified for your specific system.
Is 519-3-4 still available?
519-3-4 is currently cancelled.
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