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PartsTable / COMPONENT / MS51884-6A
MS51884-6A ✓ 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

COVER INSULATING,BLEED,TEST PORT. Key specifications include material: ALUMINUM ALLOY OVERALL, body_type: CORED, head_type: SOLID, drive_end_style: RAISED SQUARE, connection_style: PLAIN, thread_direction: RIGHT-HAND EXTERNAL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-223-9269, 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
MS51884-6A
NSN: 4730-00-223-9269
FSC: 4730
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialALUMINUM ALLOY OVERALL
body_typeCORED
head_typeSOLID
drive_end_styleRAISED SQUARE
connection_stylePLAIN
thread_directionRIGHT-HAND EXTERNAL
surface_treatmentANODIZE OVERALL
nominal_thread_size0.375 INCHES EXTERNAL IN
thread_series_designatorNPT EXTERNAL
nominal_pipe_size_for_which_designed0.375 INCHES IN
NSN4730-00-223-9269
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MS51884-6A · 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
•
DRIVE END STYLE: RAISED SQUARE
•
NOMINAL PIPE SIZE FOR WHICH DESIGNED: 0.375 INCHES IN
•
HEAD TYPE: SOLID
•
SURFACE TREATMENT: ANODIZE OVERALL
•
BODY TYPE: CORED
•
MATERIAL: ALUMINUM ALLOY OVERALL
•
CONNECTION STYLE: PLAIN
•
THREAD DIRECTION: RIGHT-HAND EXTERNAL
TECHNICAL CHARACTERISTICS (FLIS)
DRIVE END STYLERAISED SQUARE
NOMINAL PIPE SIZE FOR WHICH DESIGNED0.375 INCHES IN
HEAD TYPESOLID
SURFACE TREATMENTANODIZE OVERALL
BODY TYPECORED
MATERIALALUMINUM ALLOY OVERALL
CONNECTION STYLEPLAIN
THREAD DIRECTIONRIGHT-HAND EXTERNAL
NOMINAL THREAD SIZE0.375 INCHES EXTERNAL IN
THREAD SERIES DESIGNATORNPT EXTERNAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
4320PL0727221Interchangeable
interchangeable cross-reference
interchangeable
99115283Interchangeable
interchangeable cross-reference
interchangeable
15283Interchangeable
interchangeable cross-reference
interchangeable
G1-5649Interchangeable
interchangeable cross-reference
interchangeable
700-033-2Interchangeable
interchangeable cross-reference
interchangeable
C7893-2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS51884-6A?
MS51884-6A is a COVER INSULATING,BLEED,TEST PORT.
What parts can replace MS51884-6A?
There are 19 known substitutes for MS51884-6A: 4320PL0727221, 99115283, 15283 and 16 more. Substitute compatibility should be verified for your specific system.
Is MS51884-6A still available?
MS51884-6A 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