The Cap,retention,pressure Plug, cataloged under National Stock Number 4730-01-522-7750, 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 Naval Sea Systems Command. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-522-7750 |
| Primary Part Number | 801-6640828 PC 13 |
| Item Name | Cap,retention,pressure Plug |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Overall Diameter | 5.054 INCHES NOMINAL IN |
| Criticality Code Justification | FEAT |
| Material | COPPER AND NICKEL ALLOY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 801-6640828 PC 13 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 2633-713-01 PC 13 | 5/2 Secondary reference U.S. Government activity |
| 6640828 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 4730-01-522-7750 is a Cap,retention,pressure Plug, manufactured by Naval Sea Systems Command, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-522-7750 has 1 manufacturer part number on file: 801-6640828 PC 13 (Naval Sea Systems Command).
3 possible matches (shared part number, not a government interchangeability claim): 4730-01-522-7798, 4730-01-719-3892, 5330-01-735-6462. Verify interchangeability with system specifications before substitution.
Key specifications for 801-6640828 PC 13: Overall Diameter: 5.054 INCHES NOMINAL IN; Criticality Code Justification: FEAT; Overall Length: 3.000 INCHES NOMINAL IN; Special Features: WEAPON SYSTEM ESSENTIAL; USE WITH NUT TO CONNECT TO Y TYPE STRAINER, FOR 3.0" NPS WITH .5" SOCKET FOR PLUG; POSITIONS STRAINER ELEMENT; SOCKET WELD CONNECTIONS. 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.