The Differential Gear Unit, cataloged under National Stock Number 3040-01-522-9496, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-522-9496 |
| Item Name | Differential Gear Unit |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Material | COPPER ALLOY OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 301044-2 | 3/9 Design control — primary reference Tri-Tec Manufacturing, Llc |
| SE221N SHT2, 308007 FN-4 | 5/2 Secondary reference U.S. Government activity |
| 301044-2 | 3/2 Design control — primary reference U.S. Government activity |
| SE221N SHT2, 308007 FN-4 | 5/9 Secondary reference Tri-Tec Manufacturing, Llc |
NSN 3040-01-522-9496 is a Differential Gear Unit, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
Key specifications for 3040-01-522-9496: Special Features: SPECIFICATION: ASTM-B-584; ASSEMBLY MODEL SE221N; End Item Identification: ACTUATOR, VALVE; Material: COPPER ALLOY OVERALL. 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.