The Terminal Block,electrical, cataloged under National Stock Number 2920-01-366-3879, is classified within Federal Supply Class 2920 (Engine Electrical System Components, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Asco Power Services Inc Dba Asco Emergency Power Maintenance Incorporated. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2920-01-366-3879 |
| Primary Part Number | 33-437 |
| Item Name | Terminal Block,electrical |
| FSC / FSG | 2920 / 29 — Engine Electrical System Components, Nonaircraft |
| Manufacturer | Asco Power Services Inc Dba Asco Emergency Power Maintenance Incorporated |
| Status | ACTIVE |
| 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 |
|---|---|
| 33-437 PRIMARY | Asco Power Services Inc Dba Asco Emergency Power Maintenance Incorporated (USA) |
| Reference | Meaning |
|---|---|
| 33-437 | 5/9 Secondary reference Automatic Switch Company Dba Asco |
NSN 2920-01-366-3879 is a Terminal Block,electrical, manufactured by Asco Power Services Inc Dba Asco Emergency Power Maintenance Incorporated, classified under FSC 2920, Engine Electrical System Components, Nonaircraft. Status: active.
NSN 2920-01-366-3879 has 1 manufacturer part number on file: 33-437 (Asco Power Services Inc Dba Asco Emergency Power Maintenance Incorporated).
1 possible match (shared part number, not a government interchangeability claim): 5930-01-464-2562. Verify interchangeability with system specifications before substitution.
Key specifications for 33-437: Special Features: COGNIZANT SERVICE - ROYAL AUSTRALIAN NAVY; End Item Identification: FFG GUIDED MISSILE FRIGATE. 0 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.