The Plug,hydraulic Cylinder,piston, cataloged under National Stock Number 4730-00-970-9620, 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 Northrop Grumman Systems Corporation. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-00-970-9620 |
| Primary Part Number | 128HM10186-1 |
| Item Name | Plug,hydraulic Cylinder,piston |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Overall Diameter | 1.680 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY |
| 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 |
|---|---|
| 128HM10186-1 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| 128HM10186-1 | Triumph Actuation Systems, Llc Div Triumph Actuation Systems - Freeport (USA) |
| Reference | Meaning |
|---|---|
| 128HM10186-1 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
| 128HM10186-1 | 5/9 Secondary reference Grimm H J Co Inc |
NSN 4730-00-970-9620 is a Plug,hydraulic Cylinder,piston, manufactured by Northrop Grumman Systems Corporation, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-970-9620 has 2 manufacturer part numbers on file: 128HM10186-1 (Northrop Grumman Systems Corporation), 128HM10186-1 (Triumph Actuation Systems, Llc Div Triumph Actuation Systems - Freeport).
Key specifications for 128HM10186-1: Overall Diameter: 1.680 INCHES NOMINAL IN; Overall Length: 1.125 INCHES NOMINAL IN; End Item Identification: 18N AIRCRAFT, INTRUDER A-6E; Material: ALUMINUM ALLOY. 2 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.