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PartsTable / COMPONENT / 198E-3/4IN
198E-3/4IN ✓ 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 198E-3/4IN is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-189-2635, 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
198E-3/4IN
NSN: 4730-00-189-2635
FSC: 4730
CAGE: 14959 — CRANE CO DIV VALVE DIV (USA)
SPECIFICATIONS
Part Number198E-3/4IN
NSN4730-00-189-2635
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 198E-3/4IN · 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
•
SEAT TYPE: GROUND-JOINT
•
CONNECTION STYLE: PLAIN (PIPE) ALL ENDS
•
NOMINAL OVERALL LENGTH: 2.110 INCHES IN
•
THREAD SERIES DESIGNATOR: NPT ALL ENDS
•
MEDIA FOR WHICH DESIGNED: STEAM SINGLE RESPONSE
•
MATERIAL: STEEL OR IRON BODY
•
COUPLING FLANGE SHAPE: HEXAGON
TECHNICAL CHARACTERISTICS (FLIS)
SEAT TYPEGROUND-JOINT
CONNECTION STYLEPLAIN (PIPE) ALL ENDS
NOMINAL OVERALL LENGTH2.110 INCHES IN
THREAD SERIES DESIGNATORNPT ALL ENDS
NOMINAL OVERALL LENGTH2.110 INCHES IN
MEDIA FOR WHICH DESIGNEDSTEAM SINGLE RESPONSE
MATERIALSTEEL OR IRON BODY
COUPLING FLANGE SHAPEHEXAGON
SPECIFICATION/STANDARD DATA81349-MIL-U-18250 GOVERNMENT SPECIFICATION
STYLE DESIGNATORSCREWED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
MILU18250Interchangeable
interchangeable cross-reference
interchangeable
519-3-4Interchangeable
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
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 198E-3/4IN?
198E-3/4IN is a 198E-3/4IN.
What parts can replace 198E-3/4IN?
There are 13 known substitutes for 198E-3/4IN: MILU18250, 519-3-4, B16.39 and 10 more. Substitute compatibility should be verified for your specific system.
Is 198E-3/4IN still available?
198E-3/4IN is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026