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DF330778ASSY78 — OUTLET,BOSS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

DF330778ASSY78: OUTLET,BOSS.

The OUTLET,BOSS is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nominal_length: 1.00 INCHES FIRST END IN, nominal_thread_size: 0.438 INCHES FIRST END IN, thread_quantity_per_inch: 20 FIRST END, thread_series_designator: UNF FIRST END, part_name_assigned_by_controlling_agency: BOSS ASSEMBLY. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-684-8857, 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
DF330778ASSY78
NSN: 4730-01-684-8857
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 43689 — HUNTINGTON INGALLS INC DIV NEWPORT NEWS SHIPBUILDING (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nominal_length1.00 INCHES FIRST END IN
nominal_thread_size0.438 INCHES FIRST END IN
thread_quantity_per_inch20 FIRST END
thread_series_designatorUNF FIRST END
part_name_assigned_by_controlling_agencyBOSS ASSEMBLY
NSN4730-01-684-8857
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: DF330778ASSY78 · 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 LENGTH: 1.00 INCHES FIRST END IN
•
NOMINAL THREAD SIZE: 0.438 INCHES FIRST END IN
•
THREAD QUANTITY PER INCH: 20 FIRST END
•
MATERIAL: STEEL OVERALL
•
THREAD SERIES DESIGNATOR: UNF FIRST END
TECHNICAL CHARACTERISTICS
NOMINAL LENGTH1.00 INCHES FIRST END IN
NOMINAL THREAD SIZE0.438 INCHES FIRST END IN
PART NAME ASSIGNED BY CONTROLLING AGENCYBOSS ASSEMBLY
THREAD QUANTITY PER INCH20 FIRST END
MATERIALSTEEL OVERALL
THREAD SERIES DESIGNATORUNF 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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is DF330778ASSY78?
DF330778ASSY78 is a OUTLET,BOSS.
What is the NSN for DF330778ASSY78?
DF330778ASSY78 is cataloged in the U.S. Government catalog under NSN 4730-01-684-8857. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.