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1674N — TUBE ASSEMBLY,AIR

✓ Government record, cited
— · PIPE SECTION
PRODUCT OVERVIEW

1674N: TUBE ASSEMBLY,AIR.

The TUBE ASSEMBLY,AIR is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 4710-01-119-6646, 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
1674N
NSN: 4710-01-119-6646
FSC: 4710 — Pipe, Tube and Rigid Tubing
CAGE: 8FGX3 — CURTISS-WRIGHT ELECTRO-MECHANICAL CORP DBA STEAM & AIR SOLUTIONS DIV CURTISS-WRIGHT STEAM AND AIR SOLUTIONS (USA)
SPECIFICATIONS
general_characteristics_item_descriptionBRASS MATERIAL;18.750 IN. O/A LG,0.875 IN. ID OF TUBE,1.012 OD OF TUBE,OUTER PERIPHERY FINNED 1.844 IN. DIA BEGINNING 0.882 IN. FROM OPEN END OF TUBE AND ENDING 1.200 IN. FROM CLOSED END OF TUBE IN
NSN4710-01-119-6646
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 1674N · OEM ⚠ VERIFY BEFORE ORDERING Schedule = wall thickness, NOT pipe diameter. Sch 40 and Sch 80 have the same OD but different wall thickness. Nominal pipe size ≠ actual OD — a 1" pipe is actually 1.315" OD ✓ BROKER TIP Sch 40 = standard wall, Sch 80 = heavy wall (higher pressure), Sch 160 = extra heavy. Seamless pipe is required for high-pressure applications — welded pipe has lower ratings PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
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GENERAL CHARACTERISTICS ITEM DESCRIPTION: BRASS MATERIAL;18.750 IN. O/A LG,0.875 IN. ID OF TUBE,1.012 OD OF TUBE,OUTER PERIPHERY FINNED 1.844 IN. DIA BEGINNING 0.882 IN. FROM OPEN END OF TUBE AND ENDING 1.200 IN. FROM CLOSED END OF TUBE IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONBRASS MATERIAL;18.750 IN. O/A LG,0.875 IN. ID OF TUBE,1.012 OD OF TUBE,OUTER PERIPHERY FINNED 1.844 IN. DIA BEGINNING 0.882 IN. FROM OPEN END OF TUBE AND ENDING 1.200 IN. FROM CLOSED END OF TUBE IN
OTHER ITEMS IN FSC 4710 — Pipe, Tube and Rigid Tubing
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4710-00-001-0080 4710-00-001-0081 4710-00-001-0082 4710-00-001-1229 4710-00-001-1676 4710-00-001-1686 4710-00-001-1688 4710-00-001-1691
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 1674N?
1674N is a TUBE ASSEMBLY,AIR.
What is the NSN for 1674N?
1674N is cataloged in the U.S. Government catalog under NSN 4710-01-119-6646. 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.