The Plug,pipe, cataloged under National Stock Number 4730-01-505-3471, 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 Carver Pump Company. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4730-01-505-3471 |
| Primary Part Number | 550-250-18C202 |
| Item Name | Plug,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Carver Pump Company |
| Status | ACTIVE |
| Nominal Pipe Size for Which Designed | 0.250 INCHES IN |
| Drive End Style | SQUARE |
| Nominal Thread Size | 0.250 INCHES EXTERNAL IN |
| Body Type | SOLID |
| Material | NICKEL ALLOY OVERALL |
| Thread Series Designator | NPT EXTERNAL |
| 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 |
|---|---|
| 999-246B-0-01 ITEM NO. 429 | Carver Pump Company (USA) |
| 999-246B-0-01 ITEM NO.421,424 | Carver Pump Company (USA) |
| 550-250-18C202 PRIMARY | Carver Pump Company (USA) |
| Reference | Meaning |
|---|---|
| 999-246B-O-01 | D/9 Drawing number reference only Carver Pump Company |
NSN 4730-01-505-3471 is a Plug,pipe, manufactured by Carver Pump Company, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-505-3471 has 3 manufacturer part numbers on file: 999-246B-0-01 ITEM NO. 429 (Carver Pump Company), 999-246B-0-01 ITEM NO.421,424 (Carver Pump Company), 550-250-18C202 (Carver Pump Company).
Key specifications for 550-250-18C202: Nominal Pipe Size for Which Designed: 0.250 INCHES IN; Drive End Style: SQUARE; Nominal Thread Size: 0.250 INCHES EXTERNAL IN; Special Features: MATERIAL: CARPENTER 20, ASTM B473; PLUG 1/4-18 NPT. 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.