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PartsTable / COMPONENT / MS51845-2/125PSI
MS51845-2/125PSI ✓ 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 MS51845-2/125PSI is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-123-2176, 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
MS51845-2/125PSI
NSN: 4730-01-123-2176
FSC: 4730
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
Part NumberMS51845-2/125PSI
NSN4730-01-123-2176
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MS51845-2/125PSI · 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: QQ-C-390/3 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
LEG LENGTH: 0.719 INCHES NOMINAL ALL ENDS IN
•
FLOW ANGLE: 90.0 DEGREES
•
NONDEFINITIVE SPEC/STD DATA: A CLASS AND 1 RATING
•
CONNECTION STYLE: PLAIN (PIPE) FIRST END
•
CONNECTION TYPE: THREADED INTERNAL PIPE FIRST END
•
THREAD SERIES DESIGNATOR: NPT FIRST END
•
OPERATING PRESSURE: 125.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-C-390/3 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
LEG LENGTH0.719 INCHES NOMINAL ALL ENDS IN
FLOW ANGLE90.0 DEGREES
NONDEFINITIVE SPEC/STD DATAA CLASS AND 1 RATING
CONNECTION STYLEPLAIN (PIPE) FIRST END
CONNECTION TYPETHREADED INTERNAL PIPE FIRST END
THREAD SERIES DESIGNATORNPT FIRST END
OPERATING PRESSURE125.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
MATERIALCOPPER ALLOY OVERALL
NOMINAL THREAD SIZE0.250 INCHES FIRST END IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
4730002775542Interchangeable
interchangeable cross-reference
interchangeable
MS51845-2Interchangeable
interchangeable cross-reference
interchangeable
6-1-2302-25-5AInterchangeable
interchangeable cross-reference
interchangeable
WW-P-460 CLART1Interchangeable
interchangeable cross-reference
interchangeable
WW-P-460Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS51845-2/125PSI?
MS51845-2/125PSI is a MS51845-2/125PSI.
What parts can replace MS51845-2/125PSI?
There are 5 known substitutes for MS51845-2/125PSI: 4730002775542, MS51845-2, 6-1-2302-25-5A and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS51845-2/125PSI?
MS51845-2/125PSI is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-123-2176. 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