The Adapter,straight,flange to Hose, cataloged under National Stock Number 4730-01-253-4225, 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 Leybold Usa Inc.. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4730-01-253-4225 |
| Primary Part Number | 99-278-0668 |
| Item Name | Adapter,straight,flange to Hose |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Leybold Usa Inc. |
| Status | ACTIVE |
| Connection Style | SOCKET (HOSE) ALL ENDS |
| Nominal Inside Diameter Hose Accommodated | 0.635 INCHES ALL ENDS IN |
| Nominal Outside Diameter Hose Accommodated | 0.787 INCHES ALL ENDS IN |
| Nominal Overall Length | 1.125 INCHES IN |
| Connection Type | UNTHREADED INTERNAL HOSE ALL ENDS |
| Material | STEEL CORROSION RESISTING OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 99-278-0668 PRIMARY | Leybold Usa Inc. (USA) |
| Reference | Meaning |
|---|---|
| 99-278-0668 | 3/9 Design control — primary reference Leybold Vacuum Products Inc |
NSN 4730-01-253-4225 is a Adapter,straight,flange to Hose, manufactured by Leybold Usa Inc., classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-253-4225 has 1 manufacturer part number on file: 99-278-0668 (Leybold Usa Inc.).
Key specifications for 99-278-0668: Connection Style: SOCKET (HOSE) ALL ENDS; Nominal Inside Diameter Hose Accommodated: 0.635 INCHES ALL ENDS IN; Nominal Outside Diameter Hose Accommodated: 0.787 INCHES ALL ENDS IN; Nominal Overall Length: 1.125 INCHES IN. 6 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.