PartsTable
Technical Data Sheet
MIL-DTL-8789 ✓ 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 OVERALL, flow_angle: 45.0 DEGREES, leg_length: 0.897 INCHES NOMINAL FIRST END IN, seat_angle: 37.0 DEGREES FIRST END, thread_class: 3B FIRST END, connection_type: THREADED INTERNAL TUBE FIRST END. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-064-2655, 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
MIL-DTL-8789
NSN: 4730-00-064-2655
FSC: 4730
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL OVERALL
flow_angle45.0 DEGREES
leg_length0.897 INCHES NOMINAL FIRST END IN
seat_angle37.0 DEGREES FIRST END
thread_class3B FIRST END
connection_typeTHREADED INTERNAL TUBE FIRST END
connection_styleGRIPPING NIPPLE (NOSE) SECOND END
surface_treatmentCADMIUM OVERALL
operating_pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size0.500 INCHES FIRST END IN
media_for_which_designedHYDRAULIC FLUID SINGLE RESPONSE
thread_series_designatorUNIFIED NATIONAL JOINT FINE (UNJF) FIRST END
NSN4730-00-064-2655
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MIL-DTL-8789 · 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
SURFACE TREATMENT: CADMIUM INSIDE
OPERATING PRESSURE: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
FLOW ANGLE: 90.0 DEGREES
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.250 INCHES FIRST END IN
THREAD SERIES DESIGNATOR: UNF FIRST END
SEAT ANGLE: 37.0 DEGREES FIRST END
CONNECTION STYLE: GRIPPING NIPPLE (NOSE) SECOND END
LEG LENGTH: 1.129 INCHES NOMINAL FIRST END IN
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENTCADMIUM INSIDE
OPERATING PRESSURE3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
FLOW ANGLE90.0 DEGREES
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES FIRST END IN
THREAD SERIES DESIGNATORUNF FIRST END
SEAT ANGLE37.0 DEGREES FIRST END
CONNECTION STYLEGRIPPING NIPPLE (NOSE) SECOND END
LEG LENGTH1.129 INCHES NOMINAL FIRST END IN
CONNECTION STYLESWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED0.219 INCHES SECOND END IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
MS28781-4Interchangeable
Same NIIN cross-reference
interchangeable
332-2060-010Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-DTL-8789?
MIL-DTL-8789 is a ADAPTER,STRAIGHT,TUBE TO HOSE.
What parts can replace MIL-DTL-8789?
There are 2 known substitutes for MIL-DTL-8789: MS28781-4, 332-2060-010. Substitute compatibility should be verified for your specific system.
What is the NSN for MIL-DTL-8789?
MIL-DTL-8789 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-064-2655. This indicates validated use in U.S. government and defense supply chains.
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