The Diaphragm Assembly,regulator, cataloged under National Stock Number 2990-01-208-9950, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road). Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 2990-01-208-9950 |
| Primary Part Number | 858886-37 |
| Item Name | Diaphragm Assembly,regulator |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) |
| Status | ACTIVE |
| FSC Application Data | MISCELLANEOUS ENGINE ACCESSORIES,NONAIRCRAFT |
| General Characteristics Item Description | C/O DIAPHRAGM PN 858885-19 |
| 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 |
|---|---|
| 858886-37 PRIMARY | Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) (USA) |
| 858886-37 PRIMARY | Service & Sales Inc (USA) |
| Reference | Meaning |
|---|---|
| 858886-37 | 5/9 Secondary reference U.S. Government activity |
NSN 2990-01-208-9950 is a Diaphragm Assembly,regulator, manufactured by Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road), classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-208-9950 has 2 manufacturer part numbers on file: 858886-37 (Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road)), 858886-37 (Service & Sales Inc).
Key specifications for 858886-37: FSC Application Data: MISCELLANEOUS ENGINE ACCESSORIES,NONAIRCRAFT; General Characteristics Item Description: C/O DIAPHRAGM PN 858885-19; End Item Identification: U/O APU PN 381380-2-2 MOD GTCP165-9A FOR B1-B ACFT A. 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.