The Nut,union, cataloged under National Stock Number 4730-01-517-6071, 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 Ssp Fittings Corp. Government technical data includes 10 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through both NSN and commercial part number lookups. 10 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-517-6071 |
| Primary Part Number | Q500N-4 |
| Item Name | Nut,union |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Ssp Fittings Corp |
| Status | ACTIVE |
| Width Across Flats | 2.250 INCHES NOMINAL IN |
| Thread Series | UN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 2.000 INCHES IN |
| Nut Height | 1.063 INCHES NOMINAL IN |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 12 |
| Material | STEEL COMP 304 OVERALL |
| Shoulder Seat Diameter | 2.000 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 |
|---|---|
| Q500N-4 PRIMARY | Ssp Fittings Corp (USA) |
| Reference | Meaning |
|---|---|
| 161K0227-5 | 5/9 Secondary reference Drs Environmental Systems Inc |
| 161K0227 PN Q500N-4 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 161K0227 | D/9 Drawing number reference only U.S. Government activity |
| 161K0000 ITEM 104 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 161K0227 PN Q500N-4 | 5/9 Secondary reference U.S. Government activity |
| 161K0227-5 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 161K0000 ITEM 104 | 5/9 Secondary reference U.S. Government activity |
| 161K0227-5 | 5/9 Secondary reference U.S. Government activity |
| 161K0000 ITEM 104 | 5/9 Secondary reference Drs Environmental Systems Inc |
| 161K0227 PN Q500N-4 | 5/9 Secondary reference Drs Environmental Systems Inc |
NSN 4730-01-517-6071 is a Nut,union, manufactured by Ssp Fittings Corp, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-517-6071 has 1 manufacturer part number on file: Q500N-4 (Ssp Fittings Corp).
Key specifications for Q500N-4: Width Across Flats: 2.250 INCHES NOMINAL IN; Thread Series: UN; Thread Direction: RIGHT-HAND; Nominal Thread Size: 2.000 INCHES IN. 10 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.