The Diaphragm Kit,boost, cataloged under National Stock Number 2990-00-893-1304, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Metadure Parts & Sales, Inc.. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
| Item Name | Diaphragm Kit,boost |
| FSC / FSG | 2990 — Miscellaneous Engine Accessories, Nonaircraft (FSG 29) |
| Manufacturers | Metadure Parts & Sales, Inc. (CAGE 56190) |
| Parameter | Value |
|---|---|
| NSN | 2990-00-893-1304 |
| Primary Part Number | A8821 |
| Item Name | Diaphragm Kit,boost |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Metadure Parts & Sales, Inc. |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| A8821 PRIMARY | Metadure Parts & Sales, Inc. (USA) |
| Reference | Meaning |
|---|---|
| A8821 | 5/9 Secondary reference U.S. Government activity |
NSN 2990-00-893-1304 is a Diaphragm Kit,boost, manufactured by Metadure Parts & Sales, Inc., classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-00-893-1304 has 1 manufacturer part number on file: A8821 (Metadure Parts & Sales, Inc.).
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.