The Cap,tube, cataloged under National Stock Number 4730-01-473-2691, 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 11 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-473-2691 |
| Item Name | Cap,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Connection Style | PRESSURE SEAL FLARELESS |
| Tube Outside Diameter for Which Designed | 1.500 INCHES NOMINAL IN |
| Style Designator | CAP, TUBE, FLARELESS |
| Thread Direction | RIGHT-HAND EXTERNAL |
| Nominal Thread Size | 1.850 INCHES EXTERNAL IN |
| Specification/standard Data | 96906-MS51890 GOVERNMENT STANDARD |
| Surface Treatment | ZINC OVERALL |
| Thread Class | 2A EXTERNAL A |
| Thread Quantity Per Inch | 12 EXTERNAL |
| Material | STEEL OVERALL |
| Thread Series Designator | UN EXTERNAL |
| 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 |
|---|---|
| 4730014732691 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| MIL-DTL-18866 | 4/1 Identification reference U.S. Government activity |
| MS51890-12Z | 2/2 Government specification standardization U.S. Government activity |
| MIL-F-18866 | 5/9 Secondary reference U.S. Government activity |
NSN 4730-01-473-2691 is a Cap,tube, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-473-2691: Connection Style: PRESSURE SEAL FLARELESS; Tube Outside Diameter for Which Designed: 1.500 INCHES NOMINAL IN; Style Designator: CAP, TUBE, FLARELESS; Thread Direction: RIGHT-HAND EXTERNAL. 11 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.