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605B578H01 — BOSS,FILL AND VENT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

605B578H01: BOSS,FILL AND VENT.

The BOSS,FILL AND VENT is a the manufacturer industrial component. Key specifications include end_item_identification: RADAR SET TYPE NO.AN/TPS43. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-021-7903, 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
605B578H01
NSN: 4730-01-021-7903
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 48306 — NORTHROP GRUMMAN SUPPORT SERVICES CORP (USA)
SPECIFICATIONS
end_item_identificationRADAR SET TYPE NO.AN/TPS43
NSN4730-01-021-7903
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 605B578H01 · 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
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: STEEL,QQ-S-763,CL303,COND A,PASSIVATED PER 133C133,PARA D,ONE END UNTHD,1.005 IN. ID,1.095 IN. OD,OTHER END INT THD BOSS,0.750-16NF-3B,COUNTERBORE 0.769 IN. DIA,0.094 IN. DP COUNTERSINK 120 DEG TO 0.875 IN. DIA,EXT THD,1.250-12 UNF-2A,UNDERCUT 0.125 IN. W TO 1.130 IN. DIA,0.250 IN. W OF FLANGE,1.500 IN. HEX,1.000 IN. LG O/A,4 HOLES 0.094 IN. DIA A
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONSTEEL,QQ-S-763,CL303,COND A,PASSIVATED PER 133C133,PARA D,ONE END UNTHD,1.005 IN. ID,1.095 IN. OD,OTHER END INT THD BOSS,0.750-16NF-3B,COUNTERBORE 0.769 IN. DIA,0.094 IN. DP COUNTERSINK 120 DEG TO 0.875 IN. DIA,EXT THD,1.250-12 UNF-2A,UNDERCUT 0.125 IN. W TO 1.130 IN. DIA,0.250 IN. W OF FLANGE,1.500 IN. HEX,1.000 IN. LG O/A,4 HOLES 0.094 IN. DIA A
END ITEM IDENTIFICATIONRADAR SET TYPE NO.AN/TPS43
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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 605B578H01?
605B578H01 is a BOSS,FILL AND VENT.
What is the NSN for 605B578H01?
605B578H01 is cataloged in the U.S. Government catalog under NSN 4730-01-021-7903. 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.