The Overspeed Switch Assembly, cataloged under National Stock Number 2990-01-169-1699, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Schulze Mfg., Inc.. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-01-169-1699 |
| Primary Part Number | 7239-310-1080B |
| Item Name | Overspeed Switch Assembly |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Schulze Mfg., Inc. |
| Status | ACTIVE |
| General Characteristics Item Description | HIGH SPEED SWITCH POINT RANGE 300 TO 1500RPM;LOW SPEED SWITCH POINT DOWN TO 200RPM;FACTORY PRESET SWITCH POINTS HIGH NO.1 1080,LOW NO.1 310;INPUT SPEED MAY NOT EXCEED 200RPM OVER HIGH LIMIT SWITCH POINT RPM |
| 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 |
|---|---|
| 7239-310-1080B PRIMARY | Schulze Mfg., Inc. (USA) |
| Reference | Meaning |
|---|---|
| BZ7RW843595 | 5/2 Secondary reference U.S. Government activity |
| S104-0260 | 5/2 Secondary reference U.S. Government activity |
| 7239-310-1080B | 5/9 Secondary reference Jones Instrument Corp |
NSN 2990-01-169-1699 is a Overspeed Switch Assembly, manufactured by Schulze Mfg., Inc., classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-169-1699 has 1 manufacturer part number on file: 7239-310-1080B (Schulze Mfg., Inc.).
Key specifications for 7239-310-1080B: General Characteristics Item Description: HIGH SPEED SWITCH POINT RANGE 300 TO 1500RPM;LOW SPEED SWITCH POINT DOWN TO 200RPM;FACTORY PRESET SWITCH POINTS HIGH NO.1 1080,LOW NO.1 310;INPUT SPEED MAY NOT EXCEED 200RPM OVER HIGH LIMIT SWITCH POINT RPM. 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.