The Packing Nut, cataloged under National Stock Number 4730-01-481-1247, 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 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-481-1247 |
| Primary Part Number | 124-1678562 PC 88 |
| Item Name | Packing Nut |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Length to Shoulder | 0.938 INCHES NOMINAL IN |
| Width Across Flats | 1.875 INCHES NOMINAL IN |
| Style Designator | HEXAGON, INTERNAL THREAD, SHOULDERED |
| Thread Direction | RIGHT-HAND |
| Thread Size | 15/8-12 |
| Smallest Inside Diameter | 1.156 INCHES NOMINAL IN |
| 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 |
|---|---|
| 124-1678562 PC 88 PRIMARY | Naval Sea Systems Command (USA) |
| 1-5/8-12THDS/IN | Naval Sea Systems Command (USA) |
| 124-1678564 PC 32 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 124-1678564 | D/9 Drawing number reference only Naval Sea Systems Command |
| 124-167562 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 4730-01-481-1247 is a Packing Nut, manufactured by Naval Sea Systems Command, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-481-1247 has 3 manufacturer part numbers on file: 124-1678562 PC 88 (Naval Sea Systems Command), 1-5/8-12THDS/IN (Naval Sea Systems Command), 124-1678564 PC 32 (Naval Sea Systems Command).
Key specifications for 124-1678562 PC 88: Length to Shoulder: 0.938 INCHES NOMINAL IN; Width Across Flats: 1.875 INCHES NOMINAL IN; Style Designator: HEXAGON, INTERNAL THREAD, SHOULDERED; Overall Length: 1.000 INCHES NOMINAL IN. 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.