The Packing Nut, cataloged under National Stock Number 4730-01-261-0640, 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 Columbus Jack Corporation Div Columbus Jack. 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.
| Item Name | Packing Nut |
| FSC / FSG | 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings (FSG 47) |
| Manufacturers | Columbus Jack Corporation Div Columbus Jack (CAGE 00994) |
| Parameter | Value |
|---|---|
| NSN | 4730-01-261-0640 |
| Primary Part Number | 1128AS129 |
| Item Name | Packing Nut |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Columbus Jack Corporation Div Columbus Jack |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 1128AS129 PRIMARY | Columbus Jack Corporation Div Columbus Jack (USA) |
NSN 4730-01-261-0640 is a Packing Nut, manufactured by Columbus Jack Corporation Div Columbus Jack, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-261-0640 has 1 manufacturer part number on file: 1128AS129 (Columbus Jack Corporation Div Columbus Jack).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-269-5791. Verify interchangeability with system specifications before substitution.
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.