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PartsTable / COMPONENT / MS51825-5SSA
MS51825-5SSA ✓ 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

SLEEVE,COMPRESSION,TUBE-HOSE FIT. Key specifications include material: STEEL CORROSION RESISTING, overall_length: 0.390 INCHES MINIMUM AND 0.393 INCHES MAXIMUM IN, seat_angle_in_deg: 40.0, surface_treatment: CADMIUM, casehardening_indicator: NOT CASEHARDENED, sleeve_outside_diameter: 0.437 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-008-5969, 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
MS51825-5SSA
NSN: 4730-01-008-5969
FSC: 4730
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
overall_length0.390 INCHES MINIMUM AND 0.393 INCHES MAXIMUM IN
seat_angle_in_deg40.0
surface_treatmentCADMIUM
casehardening_indicatorNOT CASEHARDENED
sleeve_outside_diameter0.437 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
hose/tube_outside_diameter_for_which_designed0.375 INCHES NOMINAL IN
NSN4730-01-008-5969
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MS51825-5SSA · 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
•
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 0.375 INCHES NOMINAL IN
•
SEAT ANGLE IN DEG: 40.0
•
MATERIAL: STEEL CORROSION RESISTING
•
SLEEVE OUTSIDE DIAMETER: 0.437 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
•
SURFACE TREATMENT: CADMIUM
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH0.390 INCHES MINIMUM AND 0.393 INCHES MAXIMUM IN
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED0.375 INCHES NOMINAL IN
SEAT ANGLE IN DEG40.0
MATERIALSTEEL CORROSION RESISTING
SLEEVE OUTSIDE DIAMETER0.437 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM
CASEHARDENING INDICATORNOT CASEHARDENED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
MS51825-5-SS(SPCLN)Interchangeable
interchangeable cross-reference
interchangeable
MS51825-5SSInterchangeable
interchangeable cross-reference
interchangeable
M6SInterchangeable
interchangeable cross-reference
interchangeable
6TU-SSInterchangeable
interchangeable cross-reference
interchangeable
J514-6080115ASInterchangeable
Same NIIN cross-reference
interchangeable
6TU-SS3-8INInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS51825-5SSA?
MS51825-5SSA is a SLEEVE,COMPRESSION,TUBE-HOSE FIT.
What parts can replace MS51825-5SSA?
There are 10 known substitutes for MS51825-5SSA: MS51825-5-SS(SPCLN), MS51825-5SS, M6S and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS51825-5SSA?
MS51825-5SSA is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-008-5969. 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