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NSN 4730-00-021-0039Government record, cited
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Elbow, Tube4730-00-021-0039

NSN 4730-00-021-0039 · NIIN 000210039 · Part number A-159
Hydro-Fitting Manufacturing Corporation · FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings · FSG 47 — Pipe, Tubing, Hose, and Fittings · CAGE 13899
Government record, cited
NSN 4730-00-021-0039 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-021-0039. Manufacturer of record part number: A-159.
Also searched as  4730-00-021-0039 · 4730000210039 · NIIN 000210039 · 00-021-0039 · FSC 4730 Hose, Pipe, Tube, Lubrication, and Railing Fittings · CAGE 13899 · A-159 · 67523-201
Nearby stock numbers  ·
L 1.062 INCHES MINIMUM AND 1.109 INCHES MAXIMUM ALL ENDS IN UNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS HOSE FITTING
4730-00-021-0039 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Features
  • Elbow,tube — FSC 4730
  • Flow Angle: 90.0 DEGREES
  • Connection Style: FLARED (TUBE) ALL ENDS
  • Material Document and Classification: MIL-P-17091,TY 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Nominal Outside Diameter Tube Accommodated: 0.375 INCHES ALL ENDS IN
  • Leg Length: 1.062 INCHES MINIMUM AND 1.109 INCHES MAXIMUM ALL ENDS IN
  • Nominal Thread Size: 0.562 INCHES ALL ENDS IN
  • Seat Angle: 37.0 DEGREES ALL ENDS
Identification
  • NSN: 4730-00-021-0039
  • NIIN: 000210039
  • FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
  • FSG: 47 — Pipe, Tubing, Hose, and Fittings
  • Primary part number: A-159
  • Manufacturer: Hydro-Fitting Manufacturing Corporation
General Description

The Elbow,tube, cataloged under National Stock Number 4730-00-021-0039, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Hydro-Fitting Manufacturing 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government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
ParameterValue
NSN4730-00-021-0039
Primary Part NumberA-159
Item NameElbow,tube
FSC / FSG4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
ManufacturerHydro-Fitting Manufacturing Corporation
StatusACTIVE
Flow Angle90.0 DEGREES
Connection StyleFLARED (TUBE) ALL ENDS
Material Document and ClassificationMIL-P-17091,TY 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Nominal Outside Diameter Tube Accommodated0.375 INCHES ALL ENDS IN
Leg Length1.062 INCHES MINIMUM AND 1.109 INCHES MAXIMUM ALL ENDS IN
Nominal Thread Size0.562 INCHES ALL ENDS IN
Seat Angle37.0 DEGREES ALL ENDS
Media for Which DesignedFLUID SINGLE RESPONSE
Thread Class3A ALL ENDS A
MaterialPLASTIC OVERALL
Thread Series DesignatorUNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
⇄ Related Items 7
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
8455-00-126-4606 POSSIBLE MATCH
INSIGNIA,SHOULDER SLEEVE
Possible match (shared part number)
5961-00-156-7054 POSSIBLE MATCH
TRANSISTOR
Possible match (shared part number)
8455-00-255-3137 POSSIBLE MATCH
INSIGNIA,SHOULDER SLEEVE
Possible match (shared part number)
5910-01-198-1711GC845FV258M025C POSSIBLE MATCH
CAPACITOR,FIXED,ELECTROLYTIC
Possible match (shared part number)Northrop Grumman Systems Corporation
8455-01-528-7633 POSSIBLE MATCH
INSIGNIA,SHOULDER SLEEVE
Possible match (shared part number)
8455-01-664-0638 POSSIBLE MATCH
INSIGNIA,SHOULDER SLEEVE
Possible match (shared part number)
8455-01-699-7921 POSSIBLE MATCH
INSIGNIA,SHOULDER SLEEVE
Possible match (shared part number)
Cross-Reference Index
Part NumberManufacturer
A-159 Hydro-Fitting Manufacturing Corporation (USA)
Reference documents
ReferenceMeaning
67523-201 3/2 Design control — primary reference
U.S. Government activity
Related Parts
8455-00-126-4606POSSIBLE MATCH
INSIGNIA,SHOULDER SLEEVE
5961-00-156-7054POSSIBLE MATCH
TRANSISTOR
8455-00-255-3137POSSIBLE MATCH
INSIGNIA,SHOULDER SLEEVE
5910-01-198-1711POSSIBLE MATCH
CAPACITOR,FIXED,ELECTROLYTIC
GC845FV258M025C
8455-01-528-7633POSSIBLE MATCH
INSIGNIA,SHOULDER SLEEVE
8455-01-664-0638POSSIBLE MATCH
INSIGNIA,SHOULDER SLEEVE
8455-01-699-7921POSSIBLE MATCH
INSIGNIA,SHOULDER SLEEVE

Frequently Asked Questions

What is NSN 4730-00-021-0039?

NSN 4730-00-021-0039 is a Elbow,tube, manufactured by Hydro-Fitting Manufacturing Corporation, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.

What part numbers are listed for NSN 4730-00-021-0039?

NSN 4730-00-021-0039 has 1 manufacturer part number on file: A-159 (Hydro-Fitting Manufacturing Corporation).

What NSN replaces 4730-00-021-0039?

7 possible matches (shared part number, not a government interchangeability claim): 8455-00-126-4606, 5961-00-156-7054, 8455-00-255-3137. Verify interchangeability with system specifications before substitution.

What are the specifications of A-159?

Key specifications for A-159: Flow Angle: 90.0 DEGREES; Connection Style: FLARED (TUBE) ALL ENDS; Material Document and Classification: MIL-P-17091,TY 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Nominal Outside Diameter Tube Accommodated: 0.375 INCHES ALL ENDS IN. 11 specifications are documented in the U.S. Government catalog.

Is NSN 4730-00-021-0039 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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