The Cap,tube, cataloged under National Stock Number 4730-01-254-9883, 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 10 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-254-9883 |
| Item Name | Cap,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Connection Style | GASKET SEAL |
| Tube Outside Diameter for Which Designed | 3.000 INCHES NOMINAL IN |
| Style Designator | CAP |
| Material Document and Classification | QQ-B-637,ALLOY 464 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND INTERNAL |
| Nominal Thread Size | 3.750 INCHES INTERNAL IN |
| Thread Class | 2B INTERNAL |
| Thread Quantity Per Inch | 12 INTERNAL |
| Material | COPPER ALLOY OVERALL |
| Thread Series Designator | UN INTERNAL |
| 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 |
|---|---|
| 38-F-4 PC C-18 | 3/2 Design control — primary reference U.S. Government activity |
| 38-F-4 | D/9 Drawing number reference only U.S. Government activity |
NSN 4730-01-254-9883 is a Cap,tube, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 4730-01-254-9884, 4730-01-254-9885. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-01-254-9883: Connection Style: GASKET SEAL; Tube Outside Diameter for Which Designed: 3.000 INCHES NOMINAL IN; Style Designator: CAP; Material Document and Classification: QQ-B-637,ALLOY 464 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 10 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.