The Packing Nut, cataloged under National Stock Number 4730-00-172-0528, 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 Rolls-Royce Solutions America Inc. Government technical data includes 13 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-00-172-0528 |
| Primary Part Number | 5174436 |
| Item Name | Packing Nut |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Rolls-Royce Solutions America Inc |
| Status | ACTIVE |
| Hole or Slot Quantity | 2 |
| Thread Length | 0.281 INCHES NOMINAL IN |
| Style Designator | ROUND SLOTTED, EXTERNAL THREAD, BOSS |
| Thread Direction | RIGHT-HAND |
| Casehardening Indicator | NOT CASEHARDENED |
| Thread Size | 1.125-16 |
| Screw Thread Series Designator | UN |
| Thread Class | 2A A |
| Major Unthreaded Outside Diameter | 1.234 INCHES NOMINAL IN |
| Screw Thread Location | EXTERNAL |
| Material | STEEL |
| Slot Width | 0.203 INCHES NOMINAL IN |
| Smallest Inside Diameter | 0.438 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 |
|---|---|
| 100194122 | Rheinmetall Landsysteme Gmbh (DEU) |
| 5174436 PRIMARY | Rolls-Royce Solutions America Inc (USA) |
| 5174436 | Fnss Savunma Sistemleri Anonim Sirketi (TUR) |
| Reference | Meaning |
|---|---|
| 4730001720528 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 5174436 | 5/9 Secondary reference General Motors Corp |
NSN 4730-00-172-0528 is a Packing Nut, manufactured by Rolls-Royce Solutions America Inc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-172-0528 has 3 manufacturer part numbers on file: 100194122 (Rheinmetall Landsysteme Gmbh), 5174436 (Rolls-Royce Solutions America Inc), 5174436 (Fnss Savunma Sistemleri Anonim Sirketi).
Key specifications for 5174436: Hole or Slot Quantity: 2; Thread Length: 0.281 INCHES NOMINAL IN; Style Designator: ROUND SLOTTED, EXTERNAL THREAD, BOSS; Overall Length: 0.562 INCHES NOMINAL IN. 13 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.