The Plug,hose, cataloged under National Stock Number 4730-01-451-5014, 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 Guill Tool & Engineering Co Inc Div Guill Defense. Government technical data includes 4 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-451-5014 |
| Primary Part Number | 555-6405456-14 |
| Item Name | Plug,hose |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Guill Tool & Engineering Co Inc Div Guill Defense |
| Status | ACTIVE |
| Material Document and Classification | MIL-C-24679 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND EXTERNAL |
| Nominal Thread Size | 2.000 INCHES EXTERNAL IN |
| 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 |
|---|---|
| 555-6405456-14 | Naval Sea Systems Command (USA) |
| 555-6405456-14 PRIMARY | Guill Tool & Engineering Co Inc Div Guill Defense (USA) |
| Reference | Meaning |
|---|---|
| 6405456 | D/9 Drawing number reference only Naval Sea Systems Command |
| 6405456 FIND 14 | C/1 Advisory reference — outside the item-of-supply concept Guill Tool & Engineering Co Inc Div Guill Defense |
| 211057933 | C/1 Advisory reference — outside the item-of-supply concept Huntington Ingalls Inc Div Newport News Shipbuilding |
NSN 4730-01-451-5014 is a Plug,hose, manufactured by Guill Tool & Engineering Co Inc Div Guill Defense, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-451-5014 has 2 manufacturer part numbers on file: 555-6405456-14 (Naval Sea Systems Command), 555-6405456-14 (Guill Tool & Engineering Co Inc Div Guill Defense).
4 possible matches (shared part number, not a government interchangeability claim): 4730-01-511-7708, 4820-01-587-7142, 4820-01-587-7143. Verify interchangeability with system specifications before substitution.
Key specifications for 555-6405456-14: Material Document and Classification: MIL-C-24679 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Thread Direction: RIGHT-HAND EXTERNAL; Nominal Thread Size: 2.000 INCHES EXTERNAL IN; End Item Identification: SEAWOLF CLASS SSN. 4 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.