The Flange,pipe, cataloged under National Stock Number 4730-01-115-3488, 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 20 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-115-3488 |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Socket Diameter | 0.656 INCHES NOMINAL IN |
| Flange Diameter | 3.750 INCHES NOMINAL IN |
| Face Seating Surface Condition | MACHINED |
| Nominal Pipe Size for Which Designed | 0.500 INCHES IN |
| Socket Depth | 0.380 INCHES NOMINAL IN |
| Maximum Operating Temp and Media for Which Designed | 800.0 FAHRENHEIT ANY ACCEPTABLE DEGF |
| Flange Section Style | RAISED FACE, SOCKET NECK |
| Style Designator | ROUND, ONE BOLT HOLE CIRCLE |
| Bolt Hole Diameter | 0.620 INCHES NOMINAL IN |
| Neck Height | 0.281 INCHES NOMINAL IN |
| Material Document and Classification | ASTM-A-105,GR1 ASSN STD SINGLE MATERIAL RESPONSE |
| Specification/standard Data | 81349-MIL-F-18180 GOVERNMENT SPECIFICATION |
| Nondefinitive Spec/std Data | 1 TYPE AND AB STYLE |
| Bolt Hole Quantity | 8 |
| Bolt Circle Diameter | 2.620 INCHES NOMINAL IN |
| Raised Face Diameter | 1.360 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN |
| Raised Face Height | 0.250 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN |
| Surface Treatment | PAINT |
| Material | STEEL |
| Thickness | 0.560 INCHES MINIMUM AND 0.610 INCHES MAXIMUM 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 |
|---|---|
| MIL-F-18180 | 4/1 Identification reference U.S. Government activity |
| PART NO 152 | 3/1 Design control — primary reference Tube Turns Technologies Inc |
NSN 4730-01-115-3488 is a Flange,pipe, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4730-01-115-7437. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-01-115-3488: Socket Diameter: 0.656 INCHES NOMINAL IN; Flange Diameter: 3.750 INCHES NOMINAL IN; Face Seating Surface Condition: MACHINED; Nominal Pipe Size for Which Designed: 0.500 INCHES IN. 20 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.