The Packing Nut, cataloged under National Stock Number 4730-00-152-8737, 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 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 15 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. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-152-8737 |
| Primary Part Number | 655288 |
| Item Name | Packing Nut |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Length to Shoulder | 0.156 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN |
| Width Across Flats | 0.625 INCHES NOMINAL IN |
| Largest Inside Diameter | 0.500 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN |
| Thread Length | 0.188 INCHES NOMINAL IN |
| Material Document and Classification | QQ-S-763, GRADE 7 FED SPEC SINGLE MATERIAL RESPONSE |
| Smallest Outside Diameter | 0.750 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Casehardening Indicator | NOT CASEHARDENED |
| Thread Size | 0.875-20 |
| Screw Thread Series Designator | UNEF |
| Surface Treatment | PASSIVATE |
| Thread Class | 2A A |
| Screw Thread Location | EXTERNAL |
| Material | STEEL |
| Smallest Inside Diameter | 0.257 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 |
|---|---|
| 655288 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
NSN 4730-00-152-8737 is a Packing Nut, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-152-8737 has 1 manufacturer part number on file: 655288 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
1 possible match (shared part number, not a government interchangeability claim): 5330-01-135-1200. Verify interchangeability with system specifications before substitution.
Key specifications for 655288: Length to Shoulder: 0.156 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN; Width Across Flats: 0.625 INCHES NOMINAL IN; Largest Inside Diameter: 0.500 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN; Thread Length: 0.188 INCHES NOMINAL IN. 15 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.