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NSN 4710-01-221-2218Government record, cited
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Tube Assembly, Metal4710-01-221-2218

NSN 4710-01-221-2218 · NIIN 012212218 · Part number A51L21044-105TC1
Northrop Grumman Systems Corporation · FSC 4710 — Pipe, Tube and Rigid Tubing · FSG 47 — Pipe, Tubing, Hose, and Fittings · CAGE 79RG9
Government record, cited
NSN 4710-01-221-2218 — this item is cataloged by the U.S. Government under National Stock Number 4710-01-221-2218. Manufacturer of record part number: A51L21044-105TC1.
Also searched as  4710-01-221-2218 · 4710012212218 · NIIN 012212218 · 01-221-2218 · FSC 4710 Pipe, Tube and Rigid Tubing · CAGE 79RG9 · A51L21044-105TC1 · A51L21044-105 · A51L21044
Nearby stock numbers  ·
END VIEW OD 0.250 INCHES NOMINAL IN Wall: 0.020 INCHES NOMINAL IN PIPE CROSS SECTION
4710-01-221-2218 — Pipe, Tube and Rigid Tubing
Features
  • Tube Assembly,metal — FSC 4710
  • Seat Angle in Deg: 8.5 SINGLE END
  • Design Form: PREBENT
  • Mating End Quantity: 1 SINGLE END
  • Wall Thickness: 0.020 INCHES NOMINAL IN
  • Thread Direction: RIGHT-HAND SINGLE END
  • Nominal Thread Size: 0.562 INCHES SINGLE END IN
  • End Connection Style: SWIVEL NUT, INVERTED FLARE SINGLE END
Identification
  • NSN: 4710-01-221-2218
  • NIIN: 012212218
  • FSC: 4710 — Pipe, Tube and Rigid Tubing
  • FSG: 47 — Pipe, Tubing, Hose, and Fittings
  • Primary part number: A51L21044-105TC1
  • Manufacturer: Northrop Grumman Systems Corporation
General Description

The Tube Assembly,metal, cataloged under National Stock Number 4710-01-221-2218, is classified within Federal Supply Class 4710 (Pipe, Tube and Rigid Tubing) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 12 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4710-01-221-2218
Primary Part NumberA51L21044-105TC1
Item NameTube Assembly,metal
FSC / FSG4710 / 47 — Pipe, Tube and Rigid Tubing
ManufacturerNorthrop Grumman Systems Corporation
StatusACTIVE
Seat Angle in Deg8.5 SINGLE END
Design FormPREBENT
Mating End Quantity1 SINGLE END
Wall Thickness0.020 INCHES NOMINAL IN
Thread DirectionRIGHT-HAND SINGLE END
Nominal Thread Size0.562 INCHES SINGLE END IN
End Connection StyleSWIVEL NUT, INVERTED FLARE SINGLE END
Tube Outside Diameter0.250 INCHES NOMINAL IN
Thread Class3B SINGLE END
MaterialSTEEL CORROSION RESISTING TUBING
MaterialTITANIUM SINGLE END
Thread Series DesignatorUNJS SINGLE END
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
⇄ Related Items 12
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4710-01-238-4295A51L21044-106TC1 POSSIBLE MATCH
TUBE AND FITTINGS,METALLIC
Possible match (shared part number)Northrop Grumman Systems Corporation
4710-01-238-4296A51L21044-117 POSSIBLE MATCH
TUBE AND FITTINGS,METALLIC
Possible match (shared part number)Northrop Grumman Systems Corporation
4710-01-238-4297A51L21044-122 POSSIBLE MATCH
TUBE AND FITTINGS,METALLIC
Possible match (shared part number)Northrop Grumman Systems Corporation
4710-01-388-2783A51L21044-137 POSSIBLE MATCH
TUBE AND FITTINGS,METALLIC
Possible match (shared part number)Northrop Grumman Systems Corporation
4710-01-388-2794A51L21044-104 POSSIBLE MATCH
TUBE AND FITTINGS,METALLIC
Possible match (shared part number)Northrop Grumman Systems Corporation
4710-01-388-2803A51L21044-118 POSSIBLE MATCH
TUBE AND FITTINGS,METALLIC
Possible match (shared part number)Northrop Grumman Systems Corporation
4710-01-388-2815A51L21044-119 POSSIBLE MATCH
TUBE AND FITTINGS,METALLIC
Possible match (shared part number)Northrop Grumman Systems Corporation
4710-01-388-2822A51L21044-120 POSSIBLE MATCH
TUBE AND FITTINGS,METALLIC
Possible match (shared part number)Northrop Grumman Systems Corporation
4710-01-388-2827A51L21044-103 POSSIBLE MATCH
TUBE AND FITTINGS,METALLIC
Possible match (shared part number)Northrop Grumman Systems Corporation
4710-01-388-2831A51L21044-71 POSSIBLE MATCH
TUBE AND FITTINGS,METALLIC
Possible match (shared part number)Northrop Grumman Systems Corporation
Cross-Reference Index
Part NumberManufacturer
A51L21044-105TC1 PRIMARY Northrop Grumman Systems Corporation (USA)
Reference documents
ReferenceMeaning
A51L21044-105TC1 5/9 Secondary reference
Northrop Grumman Systems Corporation
A51L21044-105 5/9 Secondary reference
Northrop Grumman Systems Corporation
A51L21044-105TC1 3/9 Design control — primary reference
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems
A51L21044 D/9 Drawing number reference only
Northrop Grumman Systems Corporation
Related Parts
4710-01-238-4295POSSIBLE MATCH
TUBE AND FITTINGS,METALLIC
A51L21044-106TC1
4710-01-238-4296POSSIBLE MATCH
TUBE AND FITTINGS,METALLIC
A51L21044-117
4710-01-238-4297POSSIBLE MATCH
TUBE AND FITTINGS,METALLIC
A51L21044-122
4710-01-388-2783POSSIBLE MATCH
TUBE AND FITTINGS,METALLIC
A51L21044-137
4710-01-388-2794POSSIBLE MATCH
TUBE AND FITTINGS,METALLIC
A51L21044-104
4710-01-388-2803POSSIBLE MATCH
TUBE AND FITTINGS,METALLIC
A51L21044-118
4710-01-388-2815POSSIBLE MATCH
TUBE AND FITTINGS,METALLIC
A51L21044-119
4710-01-388-2822POSSIBLE MATCH
TUBE AND FITTINGS,METALLIC
A51L21044-120
4710-01-388-2827POSSIBLE MATCH
TUBE AND FITTINGS,METALLIC
A51L21044-103
4710-01-388-2831POSSIBLE MATCH
TUBE AND FITTINGS,METALLIC
A51L21044-71
4710-01-388-4705POSSIBLE MATCH
TUBE AND FITTINGS,METALLIC
A51L21044-141
4710-01-388-4782POSSIBLE MATCH
TUBE AND FITTINGS,METALLIC
A51L21044-140

Frequently Asked Questions

What is NSN 4710-01-221-2218?

NSN 4710-01-221-2218 is a Tube Assembly,metal, manufactured by Northrop Grumman Systems Corporation, classified under FSC 4710, Pipe, Tube and Rigid Tubing. Status: active.

What part numbers are listed for NSN 4710-01-221-2218?

NSN 4710-01-221-2218 has 1 manufacturer part number on file: A51L21044-105TC1 (Northrop Grumman Systems Corporation).

What NSN replaces 4710-01-221-2218?

12 possible matches (shared part number, not a government interchangeability claim): 4710-01-238-4295, 4710-01-238-4296, 4710-01-238-4297. Verify interchangeability with system specifications before substitution.

What are the specifications of A51L21044-105TC1?

Key specifications for A51L21044-105TC1: Seat Angle in Deg: 8.5 SINGLE END; Design Form: PREBENT; Mating End Quantity: 1 SINGLE END; Wall Thickness: 0.020 INCHES NOMINAL IN. 12 specifications are documented in the U.S. Government catalog.

Is NSN 4710-01-221-2218 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

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✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.
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