The Pump Unit,rotary, cataloged under National Stock Number 4320-01-500-0558, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Itw Gse Inc.. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-500-0558 |
| Primary Part Number | 21771 |
| Item Name | Pump Unit,rotary |
| FSC / FSG | 4320 / 43 — No Item Name Available |
| Manufacturer | Itw Gse Inc. |
| Status | ACTIVE |
| Supplementary Features | POLYALPHAOLEFIN (PAO) FLUID THERMO TRANSFER TO COOL COMPUTERS |
| Media for Which Designed | REFRIGERANTS |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4320-01-500-0558 is a Pump Unit,rotary, manufactured by Itw Gse Inc., classified under FSC 4320 (No Item Name Available). Status: active.
NSN 4320-01-500-0558 has 2 cross-referenced part numbers: 21771 (Itw Gse Inc.), 21771 (Gse Holdings Inc. Dba Itw Military Gse Div Hobart Ground Systems).
There are 5 known substitutes for 4320-01-500-0558: 3455-00-203-9879, 3455-00-540-1988, 1680-01-060-1267 and 2 more. Verify interchangeability with system specifications before substitution.
Key specifications for 21771: Supplementary Features: POLYALPHAOLEFIN (PAO) FLUID THERMO TRANSFER TO COOL COMPUTERS; End Item Identification: F/A-22 RAPTOR; Part Name Assigned by Controlling Agency: MOTOR,PUMP ASSEMBLY,COOLANT; Media for Which Designed: REFRIGERANTS. 4 total characteristics are documented in the Federal Logistics Information System.