The Nipple,pipe, cataloged under National Stock Number 4730-01-435-4673, 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 3 specifications, cited from the U.S. Government catalog. The record lists 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-435-4673 |
| Primary Part Number | 556-00-03-250 |
| Item Name | Nipple,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Carver Pump Company |
| Status | ACTIVE |
| Connection Type | THREADED EXTERNAL PIPE ALL ENDS |
| Style Designator | CLOSE |
| Material | COPPER ALLOY 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 |
|---|---|
| 556-00-03-250 PRIMARY | Carver Pump Company (USA) |
| 999-7920-A-01 IT12 | Carver Pump Company (USA) |
| Reference | Meaning |
|---|---|
| 999-7920-A-01 | D/9 Drawing number reference only Carver Pump Company |
NSN 4730-01-435-4673 is a Nipple,pipe, manufactured by Carver Pump Company, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-435-4673 has 2 manufacturer part numbers on file: 556-00-03-250 (Carver Pump Company), 999-7920-A-01 IT12 (Carver Pump Company).
2 possible matches (shared part number, not a government interchangeability claim): 4730-01-435-4680, 4730-01-440-8812. Verify interchangeability with system specifications before substitution.
Key specifications for 556-00-03-250: Connection Type: THREADED EXTERNAL PIPE ALL ENDS; Style Designator: CLOSE; End Item Identification: CARVER 14 X 10-20 ITEM 12 SPRINKLING PUMP; Material: COPPER ALLOY OVERALL. 3 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.