The Flange,pipe,blind, cataloged under National Stock Number 4730-01-055-2663, 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 15 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 4730-01-055-2663 |
| Item Name | Flange,pipe,blind |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Flange Diameter | 11.000 INCHES NOMINAL IN |
| Face Seating Surface Condition | MACHINED |
| Nominal Pipe Size for Which Designed | 6.000 INCHES IN |
| Maximum Operating Temp and Media for Which Designed | 100.0 FAHRENHEIT ANY ACCEPTABLE DEGF |
| Flange Section Style | RAISED FACE (BLIND) |
| Style Designator | ROUND, ONE BOLT HOLE CIRCLE |
| Bolt Hole Diameter | 0.880 INCHES NOMINAL IN |
| Material Document and Classification | A181-68,GRADE I ASSN STD SINGLE MATERIAL RESPONSE |
| Nondefinitive Spec/std Data | I TYPE AND F STYLE |
| Bolt Hole Quantity | 8 |
| Bolt Circle Diameter | 9.500 INCHES NOMINAL IN |
| Raised Face Height | 0.060 INCHES NOMINAL IN |
| Material | STEEL |
| Furnished Items | BOLT |
| Thickness | 0.940 INCHES MINIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| A181-68 | 3/1 Design control — primary reference U.S. Government activity |
| B16.5 | 3/1 Design control — primary reference The American Society of Mechanical Engineers |
| MIL-F-18180 | 4/1 Identification reference U.S. Government activity |
| ASAB16.5 | 5/1 Secondary reference The American Society of Mechanical Engineers |
NSN 4730-01-055-2663 is a Flange,pipe,blind, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4730-01-055-2664. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-01-055-2663: Flange Diameter: 11.000 INCHES NOMINAL IN; Face Seating Surface Condition: MACHINED; Nominal Pipe Size for Which Designed: 6.000 INCHES IN; Maximum Operating Temp and Media for Which Designed: 100.0 FAHRENHEIT ANY ACCEPTABLE DEGF. 15 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.