NSN 4710-01-090-5124 · NIIN 010905124 · Part number A51L21100-91
Northrop Grumman Systems Corporation · FSC 4710 — Pipe, Tube and Rigid Tubing · FSG 47 — Pipe, Tubing, Hose, and Fittings · CAGE 79RG9
Government record, cited
NSN 4710-01-090-5124 — this item is cataloged by the U.S. Government under National Stock Number 4710-01-090-5124. Manufacturer of record part number: A51L21100-91.
Also searched as4710-01-090-5124 ·
4710010905124 ·
NIIN 010905124 ·
01-090-5124 ·
FSC 4710 Pipe, Tube and Rigid Tubing · CAGE 79RG9 · A51L21100-91 · A51L21100
Nearby stock numbers← 4710-01-090-5123 Tube Assembly, Metal
·
4710-01-090-5125 Tube Assembly, Metal →
4710-01-090-5124 — 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: 2 SINGLE END
Wall Thickness: 0.020 INCHES NOMINAL IN
Thread Direction: RIGHT-HAND SINGLE END
Nominal Thread Size: 0.438 INCHES SINGLE END IN
End Connection Style: SWIVEL NUT, INVERTED FLARE SINGLE END
Identification
NSN: 4710-01-090-5124
NIIN: 010905124
FSC: 4710 — Pipe, Tube and Rigid Tubing
FSG: 47 — Pipe, Tubing, Hose, and Fittings
Primary part number: A51L21100-91
Manufacturer: Northrop Grumman Systems Corporation
General Description
The Tube Assembly,metal, cataloged under National Stock Number 4710-01-090-5124, 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 11 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4710-01-090-5124
Primary Part Number
A51L21100-91
Item Name
Tube Assembly,metal
FSC / FSG
4710 / 47 — Pipe, Tube and Rigid Tubing
Manufacturer
Northrop Grumman Systems Corporation
Status
ACTIVE
Seat Angle in Deg
8.5 SINGLE END
Design Form
PREBENT
Mating End Quantity
2 SINGLE END
Wall Thickness
0.020 INCHES NOMINAL IN
Thread Direction
RIGHT-HAND SINGLE END
Nominal Thread Size
0.438 INCHES SINGLE END IN
End Connection Style
SWIVEL NUT, INVERTED FLARE SINGLE END
Tube Outside Diameter
0.250 INCHES NOMINAL IN
Thread Class
3B SINGLE END
Material
TITANIUM SINGLE END
Thread Series Designator
UNJS SINGLE END
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items7
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4710-01-090-8157POSSIBLE MATCH
TUBE ASSEMBLY,METAL
Possible match (shared part number)
4710-01-227-1261A51L21100-84POSSIBLE MATCH
TUBE ASSEMBLY,METAL
Possible match (shared part number)Northrop Grumman Systems Corporation
4710-01-239-2195A51L21100-78B6POSSIBLE MATCH
TUBE ASSEMBLY,METAL
Possible match (shared part number)Northrop Grumman Systems Corporation
4710-01-259-1670A51L21100-95TC1POSSIBLE MATCH
TUBE AND FITTINGS,METALLIC
Possible match (shared part number)Northrop Grumman Systems Corporation
4710-01-259-1671A51L21100-96POSSIBLE MATCH
TUBE AND FITTINGS,METALLIC
Possible match (shared part number)Northrop Grumman Systems Corporation
4710-01-259-1672POSSIBLE MATCH
TUBE AND FITTINGS,METALLIC
Possible match (shared part number)
4710-01-259-2406A51L21100-82POSSIBLE MATCH
TUBE AND FITTINGS,METALLIC
Possible match (shared part number)Northrop Grumman Systems Corporation
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems
A51L21100
D/9Drawing number reference only
Northrop Grumman Systems Corporation
Related Parts
4710-01-090-8157POSSIBLE MATCH
TUBE ASSEMBLY,METAL
4710-01-227-1261POSSIBLE MATCH
TUBE ASSEMBLY,METAL
A51L21100-84
4710-01-239-2195POSSIBLE MATCH
TUBE ASSEMBLY,METAL
A51L21100-78B6
4710-01-259-1670POSSIBLE MATCH
TUBE AND FITTINGS,METALLIC
A51L21100-95TC1
4710-01-259-1671POSSIBLE MATCH
TUBE AND FITTINGS,METALLIC
A51L21100-96
4710-01-259-1672POSSIBLE MATCH
TUBE AND FITTINGS,METALLIC
4710-01-259-2406POSSIBLE MATCH
TUBE AND FITTINGS,METALLIC
A51L21100-82
Frequently Asked Questions
What is NSN 4710-01-090-5124?
NSN 4710-01-090-5124 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 4710-01-090-5124?
NSN 4710-01-090-5124 has 1 manufacturer part number on file: A51L21100-91 (Northrop Grumman Systems Corporation).
What NSN replaces 4710-01-090-5124?
7 possible matches (shared part number, not a government interchangeability claim): 4710-01-090-8157, 4710-01-227-1261, 4710-01-239-2195. Verify interchangeability with system specifications before substitution.
What are the specifications of A51L21100-91?
Key specifications for A51L21100-91: Seat Angle in Deg: 8.5 SINGLE END; Design Form: PREBENT; Mating End Quantity: 2 SINGLE END; Wall Thickness: 0.020 INCHES NOMINAL IN. 11 specifications are documented in the U.S. Government catalog.
Is NSN 4710-01-090-5124 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.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.