The Valve,emergency Bypass, cataloged under National Stock Number 2915-00-656-9997, is classified within Federal Supply Class 2915 (Engine Fuel System Components, Aircraft and Missile Prime Movers) of the Engine Accessories group. The manufacturer of record is Hamilton Sundstrand Corporation Dba Collins Aerospace. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2915-00-656-9997 |
| Primary Part Number | 527690 |
| Item Name | Valve,emergency Bypass |
| FSC / FSG | 2915 / 29 — Engine Fuel System Components, Aircraft and Missile Prime Movers |
| Manufacturer | Hamilton Sundstrand Corporation Dba Collins Aerospace |
| Status | ACTIVE |
| General Characteristics Item Description | CRES,HS 256-A4 CON H1075 PER UNITED AIRCRAFT SPEC NO HS 178,0.75 IN. OA LG,1.36 IN. FLANGE OD,1.219 IN. MIN,1.220 IN. MAX BODY OD,1.12 IN. BODY ID IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 527690 PRIMARY | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
NSN 2915-00-656-9997 is a Valve,emergency Bypass, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 2915, Engine Fuel System Components, Aircraft and Missile Prime Movers. Status: active.
NSN 2915-00-656-9997 has 1 manufacturer part number on file: 527690 (Hamilton Sundstrand Corporation Dba Collins Aerospace).
Key specifications for 527690: General Characteristics Item Description: CRES,HS 256-A4 CON H1075 PER UNITED AIRCRAFT SPEC NO HS 178,0.75 IN. OA LG,1.36 IN. FLANGE OD,1.219 IN. MIN,1.220 IN. MAX BODY OD,1.12 IN. BODY ID IN; End Item Identification: 29156206189. 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.
NSN 2915-00-656-9997 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.