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MS51532 ✓ 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

FILTER,RADIO FREQUENCY INTERFERE. Key specifications include material: STEEL OR STEEL CORROSION RESISTING OVERALL, seat_angle: 37.0 DEGREES, thread_class: 2B INTERNAL, connection_style: FLARE, special_features: 0.5625 NOMINAL INCHES HEX FLAT, style_designator: CAP, TUBE, FLARED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-540-1525, 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
MS51532
NSN: 4730-00-540-1525
FSC: 4730
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL OR STEEL CORROSION RESISTING OVERALL
seat_angle37.0 DEGREES
thread_class2B INTERNAL
connection_styleFLARE
special_features0.5625 NOMINAL INCHES HEX FLAT
style_designatorCAP, TUBE, FLARED
thread_directionRIGHT-HAND INTERNAL
surface_treatmentZINC OVERALL
nominal_thread_size0.438 INCHES INTERNAL IN
end_item_identificationJPN SUPPLY CLASS A0E
thread_quantity_per_inch12 INTERNAL
thread_series_designatorUNF INTERNAL
NSN4730-00-540-1525
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MS51532 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
2445209Interchangeable
interchangeable cross-reference
interchangeable
JN33-333A1Interchangeable
interchangeable cross-reference
interchangeable
A666Interchangeable
interchangeable cross-reference
interchangeable
75281Interchangeable
interchangeable cross-reference
interchangeable
13207E4702Interchangeable
interchangeable cross-reference
interchangeable
2BA309Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS51532?
MS51532 is a FILTER,RADIO FREQUENCY INTERFERE.
What parts can replace MS51532?
There are 24 known substitutes for MS51532: 2445209, JN33-333A1, A666 and 21 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS51532?
MS51532 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-540-1525. 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