The Pump,variable Volume, cataloged under National Stock Number 4320-01-059-8939, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Testek Llc Dba Testek Solutions. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-059-8939 |
| Primary Part Number | 4550-0013 |
| Item Name | Pump,variable Volume |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Testek Llc Dba Testek Solutions |
| Status | ACTIVE |
| General Characteristics Item Description | SUNDSTRAND 23 SERIES |
| 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 |
|---|---|
| 4550-0013 PRIMARY | Testek Llc Dba Testek Solutions (USA) |
| Reference | Meaning |
|---|---|
| 4550-0013 | 5/9 Secondary reference Aai Corporation Div Mississippi Operations |
NSN 4320-01-059-8939 is a Pump,variable Volume, manufactured by Testek Llc Dba Testek Solutions, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-059-8939 has 1 manufacturer part number on file: 4550-0013 (Testek Llc Dba Testek Solutions).
Key specifications for 4550-0013: General Characteristics Item Description: SUNDSTRAND 23 SERIES. 1 specification is 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.