The Adapter,straight,flange to Hose, cataloged under National Stock Number 4730-01-503-2850, 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 16 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-503-2850 |
| Item Name | Adapter,straight,flange to Hose |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Flange Shape | ROUND WITH HOLES FIRST END |
| Flange Face Design | RAISED STRAIGHT FIRST END |
| Connection Style | PLAIN (HOSE) SECOND END |
| Bolt Circle Nominal Diameter | 11.750 INCHES FIRST END IN |
| Nominal Overall Length | 7.015 INCHES IN |
| Connection Type | UNTHREADED INTERNAL HOSE SECOND END |
| Connection Type | FLANGE FIRST END |
| Bolt Hole Nominal Diameter | 0.875 INCHES FIRST END IN |
| Specification/standard Data | 81349-MIL-H-24136/1/SUPERSEDED GOVERNMENT SPECIFICATION |
| Nondefinitive Spec/std Data | AV TYPE |
| Nominal Outside Diameter | 13.500 INCHES FIRST END IN |
| Bolt Hole Quantity | 8 FIRST END |
| Material | NICKEL ALLOY OVERALL |
| Raised Face Nominal Diameter | 9.870 INCHES FIRST END IN |
| Raised Face Nominal Height | 0.015 INCHES FIRST END IN |
| Nominal Thickness | 1.304 INCHES FIRST END 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-DTL-24136/1 | 4/1 Identification reference U.S. Government activity |
| MIL-H-24136/1 | 5/9 Secondary reference U.S. Government activity |
| EB3461/1-128TYAV | 5/9 Secondary reference U.S. Government activity |
| 218000109R | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-01-503-2850 is a Adapter,straight,flange to Hose, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 4730-01-503-2875, 4720-01-513-4588, 4720-01-513-5384. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-01-503-2850: Flange Shape: ROUND WITH HOLES FIRST END; Flange Face Design: RAISED STRAIGHT FIRST END; Connection Style: PLAIN (HOSE) SECOND END; Bolt Circle Nominal Diameter: 11.750 INCHES FIRST END IN. 16 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.