NSN 4730-01-391-3200 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-391-3200. Manufacturer of record part number: 277B-1-8-F-1.
Also searched as4730-01-391-3200 ·
4730013913200 ·
NIIN 013913200 ·
01-391-3200 ·
FSC 4730 Hose, Pipe, Tube, Lubrication, and Railing Fittings · CAGE 55242 · 277B-1-8-F-1
4730-01-391-3200 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Features
Flange,pipe — FSC 4730
Flange Diameter: 5.530 INCHES NOMINAL IN
Face Seating Surface Condition: MACHINED
Flange Section Style: PLAIN FACE, SOCKET NECK
Style Designator: TRIANGULAR, ONE BOLT HOLE CIRCLE
Bolt Hole Diameter: 0.625 INCHES NOMINAL IN
Neck Height: 0.750 INCHES NOMINAL IN
Bolt Hole Quantity: 2
Identification
NSN: 4730-01-391-3200
NIIN: 013913200
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
FSG: 47 — Pipe, Tubing, Hose, and Fittings
Primary part number: 277B-1-8-F-1
Manufacturer: Isometrics Inc
General Description
The Flange,pipe, cataloged under National Stock Number 4730-01-391-3200, 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 Isometrics Inc. Government technical data includes 10 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. Current acquisition status: Active.
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 4730-01-391-3200?
NSN 4730-01-391-3200 is a Flange,pipe, manufactured by Isometrics Inc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
What part numbers are listed for NSN 4730-01-391-3200?
NSN 4730-01-391-3200 has 1 manufacturer part number on file: 277B-1-8-F-1 (Isometrics Inc).
What are the specifications of 277B-1-8-F-1?
Key specifications for 277B-1-8-F-1: Flange Diameter: 5.530 INCHES NOMINAL IN; Face Seating Surface Condition: MACHINED; Flange Section Style: PLAIN FACE, SOCKET NECK; Style Designator: TRIANGULAR, ONE BOLT HOLE CIRCLE. 10 specifications are documented in the U.S. Government catalog.
Is NSN 4730-01-391-3200 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.