The Flange,pipe, cataloged under National Stock Number 4730-01-421-5253, 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 Barlo Equipment Corp. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-421-5253 |
| Primary Part Number | 16-FOPX |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Barlo Equipment Corp |
| Status | ACTIVE |
| Flange Diameter | 1.750 INCHES NOMINAL IN |
| Face Seating Surface Condition | MACHINED |
| Nominal Pipe Size for Which Designed | 1.000 INCHES IN |
| Flange Section Style | PLAIN FACE WITH "O" RING |
| Criticality Code Justification | FEAT |
| Style Designator | ROUND, NO BOLT HOLES |
| Neck Height | 0.198 INCHES NOMINAL IN |
| Material | STEEL |
| Thickness | 0.315 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 16-FOPX | Barlo Equipment Corp (USA) |
| Reference | Meaning |
|---|---|
| 16FOPX | 3/9 Design control — primary reference Anchor Flange Company Dba Anchor Fluid Power |
NSN 4730-01-421-5253 is a Flange,pipe, manufactured by Barlo Equipment Corp, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-421-5253 has 1 manufacturer part number on file: 16-FOPX (Barlo Equipment Corp).
Key specifications for 16-FOPX: Flange Diameter: 1.750 INCHES NOMINAL IN; Face Seating Surface Condition: MACHINED; Nominal Pipe Size for Which Designed: 1.000 INCHES IN; Flange Section Style: PLAIN FACE WITH "O" RING. 9 specifications are documented in the U.S. Government catalog.
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.