The Flange,pipe,swivel Retaining, cataloged under National Stock Number 4730-01-399-0850, 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 12 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-399-0850 |
| Item Name | Flange,pipe,swivel Retaining |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Face Seating Surface Condition | MACHINED |
| Surface Treatment Document and Classification | AMS2400 ASSN STD SINGLE TREATMENT RESPONSE |
| Flange Section Style | PLAIN FACE |
| Style Designator | SQUARE, ONE BOLT HOLE CIRCLE |
| Bolt Hole Diameter | 0.281 INCHES NOMINAL IN |
| Material Document and Classification | AMS8740 ASSN STD SINGLE MATERIAL RESPONSE |
| Bolt Hole Quantity | 4 |
| Bolt Circle Diameter | 1.994 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM |
| Flange Width | 0.185 INCHES NOMINAL IN |
| Material | STEEL COMP 8740 |
| Thickness | 0.185 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 | X |
| Reference | Meaning |
|---|---|
| MS9084-24 | 2/2 Government specification standardization U.S. Government activity |
NSN 4730-01-399-0850 is a Flange,pipe,swivel Retaining, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-399-0850: Face Seating Surface Condition: MACHINED; Surface Treatment Document and Classification: AMS2400 ASSN STD SINGLE TREATMENT RESPONSE; Flange Section Style: PLAIN FACE; Style Designator: SQUARE, ONE BOLT HOLE CIRCLE. 12 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.