4730-01-571-0559 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Features
Adapter,straight,flange to Flang — FSC 4730
Flange Shape: TRIANGULAR WITH HOLES ALL ENDS
Nominal Width Across Flats: 1.867 INCHES ALL ENDS IN
Flange Face Design: PLAIN ALL ENDS
Connection Type: FLANGE ALL ENDS
Nominal Outside Diameter: 5.500 INCHES ALL ENDS IN
Bolt Hole Quantity: 6 ALL ENDS
Center to Center Nominal Distance Between Bolt Holes Along Length: 2.156 INCHES ALL ENDS IN
Identification
NSN: 4730-01-571-0559
NIIN: 015710559
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
FSG: 47 — Pipe, Tubing, Hose, and Fittings
General Description
The Adapter,straight,flange to Flang, cataloged under National Stock Number 4730-01-571-0559, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
Center to Center Nominal Distance Between Bolt Holes Along Length
2.156 INCHES ALL ENDS IN
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL Q — CCL Item — Commerce Control List
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
F
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
520-13550-4
3/2Design control — primary reference
U.S. Government activity
10-20087-9
5/9Secondary reference
U.S. Government activity
No interchangeability data on file.
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
4730-00-000-1895 · Item name not on file
4730-00-000-4289
4730-00-000-4289 · Item name not on file
4730-00-000-4445
4730-00-000-4445 · Item name not on file
4730-00-000-8373
4730-00-000-8373 · Item name not on file
4730-00-000-8897
4730-00-000-8897 · Item name not on file
4730-00-001-0007
4730-00-001-0007 · Item name not on file
4730-00-001-0008
COUPLING,TUBE
4730-00-001-0008
COUPLING,TUBE
Frequently Asked Questions
What is NSN 4730-01-571-0559?
NSN 4730-01-571-0559 is a Adapter,straight,flange to Flang, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
What are the specifications of 4730-01-571-0559?
Key specifications for 4730-01-571-0559: Flange Shape: TRIANGULAR WITH HOLES ALL ENDS; Nominal Width Across Flats: 1.867 INCHES ALL ENDS IN; Flange Face Design: PLAIN ALL ENDS; Connection Type: FLANGE ALL ENDS. 7 specifications are documented in the U.S. Government catalog.
Is NSN 4730-01-571-0559 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.
What is the DEMIL code for NSN 4730-01-571-0559?
NSN 4730-01-571-0559 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.