The Flange, cataloged under National Stock Number 2040-00-391-6487, is classified within Federal Supply Class 2040 (Marine Hardware and Hull Items) of the Ship and Marine Equipment group. The manufacturer of record is Control Flow, Inc. Dba Control Flow Inc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Flange |
| FSC / FSG | 2040 — Marine Hardware and Hull Items (FSG 20) |
| Manufacturers | Control Flow, Inc. Dba Control Flow Inc (CAGE 3X894) |
| Parameter | Value |
|---|---|
| NSN | 2040-00-391-6487 |
| Primary Part Number | B4230-3 |
| Item Name | Flange |
| FSC / FSG | 2040 / 20 — Marine Hardware and Hull Items |
| Manufacturer | Control Flow, Inc. Dba Control Flow Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| N277ALT6PC114 | Control Flow, Inc. Dba Control Flow Inc (USA) |
| B4230-3 PRIMARY | Control Flow, Inc. Dba Control Flow Inc (USA) |
| Reference | Meaning |
|---|---|
| N277ALT6PC114 | 3/2 Design control — primary reference U.S. Government activity |
| B4230-3 | 5/9 Secondary reference Control Flow, Inc. Dba Westech Heavy Machinery Division Div Westech Heavy Machinery Division |
| N277ALT6PC114 | 5/9 Secondary reference Control Flow, Inc. Dba Westech Heavy Machinery Division Div Westech Heavy Machinery Division |
| B4230-3 | 5/2 Secondary reference U.S. Government activity |
NSN 2040-00-391-6487 is a Flange, manufactured by Control Flow, Inc. Dba Control Flow Inc, classified under FSC 2040, Marine Hardware and Hull Items. Status: active.
NSN 2040-00-391-6487 has 2 manufacturer part numbers on file: N277ALT6PC114 (Control Flow, Inc. Dba Control Flow Inc), B4230-3 (Control Flow, Inc. Dba Control Flow Inc).
1 possible match (shared part number, not a government interchangeability claim): 4210-01-324-4316. Verify interchangeability with system specifications before substitution.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
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.