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Technical Data Sheet
PartsTable / COMPONENT / MS51845-12
MS51845-12 ✓ 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 ELBOW,PIPE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, flow_angle: 90.0 DEGREES, leg_length: 3.790 INCHES NOMINAL ALL ENDS IN, connection_type: THREADED INTERNAL PIPE ALL ENDS, connection_style: PLAIN (PIPE) ALL ENDS, operating_pressure: 125.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-249-3895, 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
MS51845-12
NSN: 4730-00-249-3895
FSC: 4730
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
flow_angle90.0 DEGREES
leg_length3.790 INCHES NOMINAL ALL ENDS IN
connection_typeTHREADED INTERNAL PIPE ALL ENDS
connection_stylePLAIN (PIPE) ALL ENDS
operating_pressure125.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
nominal_thread_size4.000 INCHES ALL ENDS IN
maximum_operating_temp65.6 CELSIUS SECOND RESPONSE DEGC
media_for_which_designedWATER-OIL-GAS SECOND RESPONSE
thread_series_designatorNPT ALL ENDS
nondefinitive_spec/std_dataA CLASS
nominal_pipe_size_accommodated4.000 INCHES ALL ENDS IN
NSN4730-00-249-3895
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MS51845-12 · 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
•
THREAD SERIES DESIGNATOR: NPT ALL ENDS
•
MATERIAL: COPPER ALLOY OVERALL
•
MEDIA FOR WHICH DESIGNED: WATER-OIL-GAS SECOND RESPONSE
•
OPERATING PRESSURE: 125.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
•
NONDEFINITIVE SPEC/STD DATA: A CLASS
•
CONNECTION STYLE: PLAIN (PIPE) ALL ENDS
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORNPT ALL ENDS
MATERIALCOPPER ALLOY OVERALL
MEDIA FOR WHICH DESIGNEDWATER-OIL-GAS SECOND RESPONSE
OPERATING PRESSURE125.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
NONDEFINITIVE SPEC/STD DATAA CLASS
OPERATING PRESSURE175.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS
MEDIA FOR WHICH DESIGNEDSTEAM FIRST RESPONSE
CONNECTION STYLEPLAIN (PIPE) ALL ENDS
LEG LENGTH3.790 INCHES NOMINAL ALL ENDS IN
NOMINAL PIPE SIZE ACCOMMODATED4.000 INCHES ALL ENDS IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
50A2481Interchangeable
interchangeable cross-reference
interchangeable
MS51952-1Interchangeable
interchangeable cross-reference
interchangeable
WWP460CLASSAInterchangeable
interchangeable cross-reference
interchangeable
MIL-F-1184TYPE1Interchangeable
interchangeable cross-reference
interchangeable
MS14305-3YAInterchangeable
interchangeable cross-reference
interchangeable
7701-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS51845-12?
MS51845-12 is a ELBOW,PIPE.
What parts can replace MS51845-12?
There are 20 known substitutes for MS51845-12: 50A2481, MS51952-1, WWP460CLASSA and 17 more. Substitute compatibility should be verified for your specific system.
Is MS51845-12 still available?
MS51845-12 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