The Packing Nut, cataloged under National Stock Number 4730-01-567-8550, 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 Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc. The record lists 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-01-567-8550 |
| Primary Part Number | M4129-7-AM |
| Item Name | Packing Nut |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc |
| Status | ACTIVE |
| 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 |
|---|---|
| M4129-7-AM PRIMARY | Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc (USA) |
| M4110-2713 PC NO. 8 | Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc (USA) |
| Reference | Meaning |
|---|---|
| M4110-2713 PC NO. 8 | 5/9 Secondary reference Derbyshire Machine & Tool Co |
| M4129-7-AM | 3/9 Design control — primary reference Derbyshire Machine & Tool Co |
NSN 4730-01-567-8550 is a Packing Nut, manufactured by Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-567-8550 has 2 manufacturer part numbers on file: M4129-7-AM (Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc), M4110-2713 PC NO. 8 (Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc).
Key specifications for M4129-7-AM: Part Name Assigned by Controlling Agency: GLAND NUT; End Item Identification: VALVE, GLOBE, NEEDLE M4110-2713. 0 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.