The Packing Nut, cataloged under National Stock Number 4730-00-671-4534, 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 Classic Mfg. Government technical data includes 14 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-671-4534 |
| Primary Part Number | 60-56PC2 |
| Item Name | Packing Nut |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Classic Mfg |
| Status | ACTIVE |
| Hole or Slot Quantity | 8 |
| Largest Inside Diameter | 2.875 INCHES NOMINAL IN |
| Thread Length | 0.375 INCHES NOMINAL IN |
| Style Designator | ROUND, INTERNAL THREAD, SHOULDERED |
| Smallest Outside Diameter | 3.062 INCHES NOMINAL IN |
| Thread Direction | LEFT-HAND |
| Casehardening Indicator | NOT CASEHARDENED |
| Thread Size | 2.250-12 |
| Screw Thread Series Designator | UN |
| Thread Class | 2B |
| Major Unthreaded Outside Diameter | 4.625 INCHES NOMINAL IN |
| Screw Thread Location | INTERNAL |
| Material | STEEL |
| Slot Width | 0.312 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 |
|---|---|
| 60-56PC2 | Classic Mfg (USA) |
| Reference | Meaning |
|---|---|
| 56A2 | 3/9 Design control — primary reference Hardie-Tynes Co., Inc. |
| 60-56PC262-272-249 | 5/9 Secondary reference Hardie-Tynes Co., Inc. |
NSN 4730-00-671-4534 is a Packing Nut, manufactured by Classic Mfg, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-671-4534 has 1 manufacturer part number on file: 60-56PC2 (Classic Mfg).
Key specifications for 60-56PC2: Hole or Slot Quantity: 8; Largest Inside Diameter: 2.875 INCHES NOMINAL IN; Thread Length: 0.375 INCHES NOMINAL IN; Style Designator: ROUND, INTERNAL THREAD, SHOULDERED. 14 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.