The Piston,hydraulic Motor-Pump, cataloged under National Stock Number 4320-00-970-4673, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Eaton Aerospace, Llc Dba Jackson South. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-00-970-4673 |
| Primary Part Number | DS-921720 |
| Item Name | Piston,hydraulic Motor-Pump |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Eaton Aerospace, Llc Dba Jackson South |
| Status | ACTIVE |
| FSC Application Data | HYDRAULIC SYSTEM. C-135 ACFT. |
| General Characteristics Item Description | MATCHED COMPONENTS 1 PISTON,1 HEAD,1 COLLAR,2.700 IN O/A LG,END ITEM FSCM 90166,END ITEM FSN 4320-864-8677 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 |
|---|---|
| 921720 | Eaton Aerospace, Llc Dba Jackson South (USA) |
| DS-921720 PRIMARY | Eaton Aerospace, Llc Dba Jackson South (USA) |
| Reference | Meaning |
|---|---|
| 1757-2S | 5/9 Secondary reference U.S. Government activity |
| DS-921720 | 3/9 Design control — primary reference U.S. Government activity |
| 1757-2S | 5/9 Secondary reference General Signal Corp |
NSN 4320-00-970-4673 is a Piston,hydraulic Motor-Pump, manufactured by Eaton Aerospace, Llc Dba Jackson South, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-00-970-4673 has 2 manufacturer part numbers on file: 921720 (Eaton Aerospace, Llc Dba Jackson South), DS-921720 (Eaton Aerospace, Llc Dba Jackson South).
Key specifications for DS-921720: FSC Application Data: HYDRAULIC SYSTEM. C-135 ACFT.; General Characteristics Item Description: MATCHED COMPONENTS 1 PISTON,1 HEAD,1 COLLAR,2.700 IN O/A LG,END ITEM FSCM 90166,END ITEM FSN 4320-864-8677 IN. 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.