The Holder,electrical Contact Brush, cataloged under National Stock Number 5977-00-937-1504, 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 Ontic Engineering & Manufacturing, Inc Dba Ontic Us. Government technical data includes 10 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5977-00-937-1504 |
| Primary Part Number | 1544527 |
| Item Name | Holder,electrical Contact Brush |
| FSC / FSG | 5977 / 59 — Electrical Contact Brushes and Electrodes |
| Manufacturer | Ontic Engineering & Manufacturing, Inc Dba Ontic Us |
| Status | ACTIVE |
| Brush Spring Adjustability | NONADJUSTABLE |
| Mounting Facility Quantity | 1 |
| Terminal Quantity | 2 |
| Terminal Type | THREADED HOLE |
| Inside Length | 1.188 INCHES NOMINAL IN |
| Overall Thickness | 2.500 INCHES NOMINAL IN |
| Brush Quantity Accommodated Per Holder | 2 |
| Brush Pressure Spring Type Accommodated | SPIRAL TORSION |
| Mounting Facility | THREADED HOLES |
| Inside Thickness | 1.438 INCHES NOMINAL IN |
| 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 |
|---|---|
| 1544527 PRIMARY | Ontic Engineering & Manufacturing, Inc Dba Ontic Us (USA) |
| Reference | Meaning |
|---|---|
| 1544527 | 5/9 Secondary reference U.S. Government activity |
| 1544527 | 5/9 Secondary reference Honeywell International, Inc Div Aerospace-Tucson |
NSN 5977-00-937-1504 is a Holder,electrical Contact Brush, manufactured by Ontic Engineering & Manufacturing, Inc Dba Ontic Us, classified under FSC 5977, Electrical Contact Brushes and Electrodes. Status: active.
NSN 5977-00-937-1504 has 1 manufacturer part number on file: 1544527 (Ontic Engineering & Manufacturing, Inc Dba Ontic Us).
Key specifications for 1544527: Brush Spring Adjustability: NONADJUSTABLE; Mounting Facility Quantity: 1; Terminal Quantity: 2; Terminal Type: THREADED HOLE. 10 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.