The Gearcase,pump, cataloged under National Stock Number 4320-00-034-2228, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Us Army Aviation and Missile Command. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 4320-00-034-2228 |
| Primary Part Number | 9090883-77 |
| Item Name | Gearcase,pump |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Us Army Aviation and Missile Command |
| Status | ACTIVE |
| General Characteristics Item Description | ALUMINUM DIE CASTING,6.000 IN. W,6.750 IN. LG; 7.500 IN. H; BASE NOUNTED W/FOUR MTD HOLES 0.265 IN. DIA SPACED 5.250 IN. CENTER TO CENTER ALONG LG; 4.750 IN. CENTER TO CENTER ALONG W 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 |
|---|---|
| 9090883-77 PRIMARY | Us Army Aviation and Missile Command (USA) |
| Reference | Meaning |
|---|---|
| 401039 | 5/9 Secondary reference Goodrich Corporation Dba Trw Lucas Aerospace |
NSN 4320-00-034-2228 is a Gearcase,pump, manufactured by Us Army Aviation and Missile Command, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-00-034-2228 has 1 manufacturer part number on file: 9090883-77 (Us Army Aviation and Missile Command).
4 possible matches (shared part number, not a government interchangeability claim): 1560-00-785-9167, 2530-01-126-1505, 4130-01-531-1130. Verify interchangeability with system specifications before substitution.
Key specifications for 9090883-77: General Characteristics Item Description: ALUMINUM DIE CASTING,6.000 IN. W,6.750 IN. LG; 7.500 IN. H; BASE NOUNTED W/FOUR MTD HOLES 0.265 IN. DIA SPACED 5.250 IN. CENTER TO CENTER ALONG LG; 4.750 IN. CENTER TO CENTER ALONG W IN. 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.