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391687 — ADAPTER,STRAIGHT,TUBE TO HOSE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

391687: ADAPTER,STRAIGHT,TUBE TO HOSE.

The ADAPTER,STRAIGHT,TUBE TO HOSE is a the manufacturer industrial component. Key specifications include thread_class: 2A FIRST END A, connection_type: THREADED INTERNAL HOSE SECOND END, nominal_thread_size: 0.875 INCHES FIRST END IN, media_for_which_designed: HYDRAULIC FLUID SINGLE RESPONSE, thread_quantity_per_inch: 18 FIRST END, thread_series_designator: NPSH SECOND END. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-333-0133, 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
391687
NSN: 4730-01-333-0133
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 15434 — CUMMINS INC. (USA)
SPECIFICATIONS
thread_class2A FIRST END A
connection_typeTHREADED INTERNAL HOSE SECOND END
nominal_thread_size0.875 INCHES FIRST END IN
media_for_which_designedHYDRAULIC FLUID SINGLE RESPONSE
thread_quantity_per_inch18 FIRST END
thread_series_designatorNPSH SECOND END
furnished_items_and_quantity1 PREFORMED PACKING
nominal_outside_diameter_tube_accommodated0.625 INCHES FIRST END IN
NSN4730-01-333-0133
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 391687 · 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
•
FURNISHED ITEMS AND QUANTITY: 1 PREFORMED PACKING
•
CONNECTION TYPE: THREADED EXTERNAL TUBE FIRST END
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.625 INCHES FIRST END IN
•
NOMINAL THREAD SIZE: 1.5 MILLIMETERS SECOND END MM
•
MEDIA FOR WHICH DESIGNED: HYDRAULIC FLUID SINGLE RESPONSE
•
THREAD CLASS: 2A FIRST END A
TECHNICAL CHARACTERISTICS
FURNISHED ITEMS AND QUANTITY1 PREFORMED PACKING
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST END
CONNECTION TYPETHREADED INTERNAL HOSE SECOND END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.625 INCHES FIRST END IN
NOMINAL THREAD SIZE1.5 MILLIMETERS SECOND END MM
NOMINAL THREAD SIZE0.875 INCHES FIRST END IN
MEDIA FOR WHICH DESIGNEDHYDRAULIC FLUID SINGLE RESPONSE
THREAD CLASS2A FIRST END A
THREAD QUANTITY PER INCH18 FIRST END
THREAD SERIES DESIGNATORUNS FIRST END
OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008
SUBSTITUTES & CROSS-REFERENCES 2
3916857Reference document
Same NSN cross-reference
Reference document — Secondary reference
CBU1730Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 391687?
391687 is a ADAPTER,STRAIGHT,TUBE TO HOSE.
What parts can replace 391687?
There are 2 known substitutes for 391687: 3916857, CBU1730. Substitute compatibility should be verified for your specific system.
What is the NSN for 391687?
391687 is cataloged in the U.S. Government catalog under NSN 4730-01-333-0133. This indicates validated use in U.S. government and defense supply chains.
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