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PartsTable / COMPONENT / MS24399D24
MS24399D24 ✓ 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 ADAPTER,STRAIGHT,PIPE TO BOSS is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY OVERALL, seat_angle: 37.0 DEGREES ALL ENDS, reducer_type: CONCENTRIC, thread_class: 3A ALL ENDS A, connection_type: THREADED EXTERNAL TUBE ALL ENDS, connection_style: FLARED (TUBE) ALL ENDS. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-684-7446, 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
MS24399D24
NSN: 4730-00-684-7446
FSC: 4730
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialALUMINUM ALLOY OVERALL
seat_angle37.0 DEGREES ALL ENDS
reducer_typeCONCENTRIC
thread_class3A ALL ENDS A
connection_typeTHREADED EXTERNAL TUBE ALL ENDS
connection_styleFLARED (TUBE) ALL ENDS
special_featuresGRUMMAN AIRCRAFT CORP,A-10 AIRCRAFT MODEL
surface_treatmentANODIZE OVERALL
nominal_thread_size1.062 INCHES SECOND END IN
nominal_overall_length2.156 INCHES IN
thread_quantity_per_inch12 ALL ENDS
thread_series_designatorUN ALL ENDS
NSN4730-00-684-7446
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MS24399D24 · 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
•
NOMINAL THREAD SIZE: 1.312 INCHES FIRST END IN
•
THREAD SERIES DESIGNATOR: UN ALL ENDS
•
CONNECTION STYLE: FLARED (TUBE) ALL ENDS
•
MATERIAL: ALUMINUM ALLOY OVERALL
•
SURFACE TREATMENT: ANODIZE OVERALL
•
THREAD QUANTITY PER INCH: 12 ALL ENDS
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD SIZE1.312 INCHES FIRST END IN
SPECIAL FEATURESGRUMMAN AIRCRAFT CORP,A-10 AIRCRAFT MODEL
NOMINAL THREAD SIZE1.062 INCHES SECOND END IN
THREAD SERIES DESIGNATORUN ALL ENDS
CONNECTION STYLEFLARED (TUBE) ALL ENDS
MATERIALALUMINUM ALLOY OVERALL
SURFACE TREATMENTANODIZE OVERALL
THREAD QUANTITY PER INCH12 ALL ENDS
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED1.000 INCHES FIRST END IN
NOMINAL OVERALL LENGTH2.156 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
B5-45-2757Interchangeable
interchangeable cross-reference
interchangeable
A-235Interchangeable
interchangeable cross-reference
interchangeable
301532Interchangeable
interchangeable cross-reference
interchangeable
DS-B-90313 ITEM 4Interchangeable
interchangeable cross-reference
interchangeable
800916Interchangeable
interchangeable cross-reference
interchangeable
MIL-F-5509Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS24399D24?
MS24399D24 is a ADAPTER,STRAIGHT,PIPE TO BOSS.
What parts can replace MS24399D24?
There are 6 known substitutes for MS24399D24: B5-45-2757, A-235, 301532 and 3 more. Substitute compatibility should be verified for your specific system.
Is MS24399D24 still available?
MS24399D24 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