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Technical Data Sheet
PartsTable / COMPONENT / MS39290-8-8B
MS39290-8-8B ✓ 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,TUBE TO HOSE is a the manufacturer industrial component. Key specifications include material: STEEL OR IRON OVERALL, seat_angle: 37.0 DEGREES FIRST END, thread_class: 3B FIRST END3B FIRST END, connection_type: THREADED INTERNAL TUBE FIRST ENDTHREADED INTERNAL TUBE FIRST END, connection_style: GRIPPING NIPPLE (NOSE) SECOND ENDGRIPPING NIPPLE (NOSE) SECOND END, surface_treatment: ZINC OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-451-2703, 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
MS39290-8-8B
NSN: 4730-00-451-2703
FSC: 4730
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL OR IRON OVERALL
seat_angle37.0 DEGREES FIRST END
thread_class3B FIRST END3B FIRST END
connection_typeTHREADED INTERNAL TUBE FIRST ENDTHREADED INTERNAL TUBE FIRST END
connection_styleGRIPPING NIPPLE (NOSE) SECOND ENDGRIPPING NIPPLE (NOSE) SECOND END
surface_treatmentZINC OVERALL
operating_pressure3500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size0.750 INCHES FIRST END0.750 INCHES FIRST END IN
maximum_operating_temp212.0 FAHRENHEIT SINGLE RESPONSE212.0 FAHRENHEIT SINGLE RESPONSE DEGF
nominal_overall_length3.330 INCHES IN
end_item_identification3930-00-327-15753930-00-327-1575
media_for_which_designedHYDRAULIC FLUID SINGLE RESPONSE
NSN4730-00-451-2703
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MS39290-8-8B · 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
•
OPERATING PRESSURE: 3500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
CONNECTION STYLE: GRIPPING NIPPLE (NOSE) SECOND ENDGRIPPING NIPPLE (NOSE) SECOND END
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.500 INCHES FIRST END IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-Z-325,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
SPECIFICATION/STANDARD DATA: 81349-MIL-F-52525C GOVERNMENT SPECIFICATION
•
CONNECTION TYPE: THREADED EXTERNAL HOSE GRIPPING SECOND ENDTHREADED EXTERNAL HOSE GRIPPING SECOND END
•
MAXIMUM OPERATING TEMP: 212.0 FAHRENHEIT SINGLE RESPONSE212.0 FAHRENHEIT SINGLE RESPONSE DEGF
•
THREAD SERIES DESIGNATOR: UNF FIRST END
TECHNICAL CHARACTERISTICS (FLIS)
OPERATING PRESSURE3500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
CONNECTION STYLEGRIPPING NIPPLE (NOSE) SECOND ENDGRIPPING NIPPLE (NOSE) SECOND END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.500 INCHES FIRST END IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-Z-325,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SPECIFICATION/STANDARD DATA81349-MIL-F-52525C GOVERNMENT SPECIFICATION
CONNECTION TYPETHREADED EXTERNAL HOSE GRIPPING SECOND ENDTHREADED EXTERNAL HOSE GRIPPING SECOND END
MAXIMUM OPERATING TEMP212.0 FAHRENHEIT SINGLE RESPONSE212.0 FAHRENHEIT SINGLE RESPONSE DEGF
THREAD SERIES DESIGNATORUNF FIRST END
NONDEFINITIVE SPEC/STD DATAB TYPE
NOMINAL OUTSIDE DIAMETER HOSE ACCOMMODATED0.969 INCHES SECOND END IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
4721-6Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-52525/1Interchangeable
interchangeable cross-reference
interchangeable
4721-12Interchangeable
interchangeable cross-reference
interchangeable
4721-12SInterchangeable
interchangeable cross-reference
interchangeable
M52525/1-12-12JInterchangeable
interchangeable cross-reference
interchangeable
MIL-F-52525Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS39290-8-8B?
MS39290-8-8B is a ADAPTER,STRAIGHT,TUBE TO HOSE.
What parts can replace MS39290-8-8B?
There are 21 known substitutes for MS39290-8-8B: 4721-6, MIL-DTL-52525/1, 4721-12 and 18 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS39290-8-8B?
MS39290-8-8B is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-451-2703. 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