The Holder Assembly,electrical Conta, cataloged under National Stock Number 5977-01-028-6790, is classified within Federal Supply Class 5977 (Electrical Contact Brushes and Electrodes) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Honeywell International Inc. Dba Honeywell International. Government technical data includes 9 specifications, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5977-01-028-6790 |
| Primary Part Number | 277572 |
| Item Name | Holder Assembly,electrical Conta |
| FSC / FSG | 5977 / 59 — Electrical Contact Brushes and Electrodes |
| Manufacturer | Honeywell International Inc. Dba Honeywell International |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 BRUSH AND 2 JUMPER ASSEMBLY |
| Brush Spring Adjustability | NONADJUSTABLE |
| Holder Quantity Per Assembly | 4 |
| Brush Quantity Accommodated Per Holder | 1 |
| Features Provided | BRUSH PRESSURE SPRING AND POSITIONING SLOTS |
| Brush Pressure Spring Type Accommodated | HELICAL TORSION |
| Total Brush Quantity Accommodated | 4 |
| Holder Position Adjustability | NONADJUSTABLE |
| Assembly Grouping Position | CIRCLE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 277572 PRIMARY | Honeywell International Inc. Dba Honeywell International (USA) |
| Reference | Meaning |
|---|---|
| 277572 | 5/9 Secondary reference Lockheed Martin Corporation Div Rms - Mitchel Field |
NSN 5977-01-028-6790 is a Holder Assembly,electrical Conta, manufactured by Honeywell International Inc. Dba Honeywell International, classified under FSC 5977, Electrical Contact Brushes and Electrodes. Status: active.
NSN 5977-01-028-6790 has 1 manufacturer part number on file: 277572 (Honeywell International Inc. Dba Honeywell International).
1 possible match (shared part number, not a government interchangeability claim): 1560-01-648-1372. Verify interchangeability with system specifications before substitution.
Key specifications for 277572: Furnished Items and Quantity: 1 BRUSH AND 2 JUMPER ASSEMBLY; Brush Spring Adjustability: NONADJUSTABLE; Holder Quantity Per Assembly: 4; Brush Quantity Accommodated Per Holder: 1. 9 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.
NSN 5977-01-028-6790 has DEMIL Code Q. 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.