The Cylinder Block Unit,hydraulic Mo, cataloged under National Stock Number 4320-00-657-8335, 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 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-00-657-8335 |
| Primary Part Number | 197760 |
| Item Name | Cylinder Block Unit,hydraulic Mo |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Eaton Aerospace, Llc Dba Jackson South |
| Status | ACTIVE |
| FSC Application Data | PUMP UNIT,RECIPROCATING |
| General Characteristics Item Description | 9 PISTON HOLES |
| 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 |
|---|---|
| 197760 PRIMARY | Eaton Aerospace, Llc Dba Jackson South (USA) |
NSN 4320-00-657-8335 is a Cylinder Block Unit,hydraulic Mo, manufactured by Eaton Aerospace, Llc Dba Jackson South, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-00-657-8335 has 1 manufacturer part number on file: 197760 (Eaton Aerospace, Llc Dba Jackson South).
2 possible matches (shared part number, not a government interchangeability claim): 5815-00-839-1244, 7025-01-457-4806. Verify interchangeability with system specifications before substitution.
Key specifications for 197760: FSC Application Data: PUMP UNIT,RECIPROCATING; General Characteristics Item Description: 9 PISTON HOLES; End Item Identification: 4320006846070 AA19529B PUMP UNIT. 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.