PartsTable TECHNICAL DATA SHEET
NSN 4730-01-261-6591Government record, cited

Adapter, Straight, Flange to Flang4730-01-261-6591

NSN 4730-01-261-6591 · NIIN 012616591
FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings · FSG 47 — Pipe, Tubing, Hose, and Fittings
Government record, cited
Also searched as  4730-01-261-6591 · 4730012616591 · NIIN 012616591 · 01-261-6591 · FSC 4730 Hose, Pipe, Tube, Lubrication, and Railing Fittings
Nearby stock numbers  ·
Features
  • Adapter,straight,flange to Flang — FSC 4730
  • Flange Shape: ROUND SECOND END
  • Flange Shape: ROUND WITH HOLES FIRST END
  • Flange Face Design: PLAIN FIRST END
  • Flange Face Design: PLAIN SECOND END
  • Nominal Overall Length: 2.000 INCHES IN
  • Connection Type: FLANGE ALL ENDS
  • Nominal Outside Diameter: 16.0 MILLIMETERS FIRST END MM
Identification
  • NSN: 4730-01-261-6591
  • NIIN: 012616591
  • 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 4730-01-261-6591, 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 9 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-261-6591
Item NameAdapter,straight,flange to Flang
FSC / FSG4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
StatusACTIVE
Flange ShapeROUND SECOND END
Flange ShapeROUND WITH HOLES FIRST END
Flange Face DesignPLAIN FIRST END
Flange Face DesignPLAIN SECOND END
Nominal Overall Length2.000 INCHES IN
Connection TypeFLANGE ALL ENDS
Nominal Outside Diameter16.0 MILLIMETERS FIRST END MM
Nominal Outside Diameter2.750 INCHES SECOND END IN
MaterialSTEEL COMP 304 OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
ReferenceMeaning
801-1816 3/9 Design control — primary reference
Intevac, Inc.
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 4730-01-261-6591?

NSN 4730-01-261-6591 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 4730-01-261-6591?

Key specifications for 4730-01-261-6591: Flange Shape: ROUND SECOND END; Flange Shape: ROUND WITH HOLES FIRST END; Flange Face Design: PLAIN FIRST END; Flange Face Design: PLAIN SECOND END. 9 specifications are documented in the U.S. Government catalog.

Is NSN 4730-01-261-6591 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.
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