The Brush,electrical Contact, cataloged under National Stock Number 5977-00-178-8124, 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 Raytheon Company Dba Raytheon Co. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5977-00-178-8124 |
| Primary Part Number | A105078A |
| Item Name | Brush,electrical Contact |
| FSC / FSG | 5977 / 59 — Electrical Contact Brushes and Electrodes |
| Manufacturer | Raytheon Company Dba Raytheon Co |
| Status | ACTIVE |
| Length | 0.441 INCHES NOMINAL IN |
| Body Style | RECTANGULAR COMMUTATOR |
| Style Designator | ONE PIECE |
| Material Document and Classification | MORGANITE BRUSH CO. INC,GR H-6782 MFR REF SINGLE MATERIAL RESPONSE |
| Brush Shunt Length | 1.141 INCHES NOMINAL SINGLE SHUNT IN |
| Contact Face Style | CONCAVE ON BEVEL |
| Shunt Insulation Provision and Quantity | 1 UNINSULATED |
| Width | 0.187 INCHES NOMINAL IN |
| Bevel Angle | 21.0 DEGREES NOMINAL |
| Material | GRAPHITE |
| Terminal Type and Quantity | 1 STRAIGHT W/HOLE |
| Thickness | 0.125 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 |
|---|---|
| A105078A PRIMARY | Raytheon Company Dba Raytheon Co (USA) |
| 105078B | Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) (USA) |
| Reference | Meaning |
|---|---|
| MB1011 | 5/9 Secondary reference Morganite Inc |
| 105078B | 5/9 Secondary reference Allied-Signal Inc Dba Allied-Signal Aerospace Co Electrodynamics Div |
| 105078B | 5/9 Secondary reference Bendix Corp the |
NSN 5977-00-178-8124 is a Brush,electrical Contact, manufactured by Raytheon Company Dba Raytheon Co, classified under FSC 5977, Electrical Contact Brushes and Electrodes. Status: active.
NSN 5977-00-178-8124 has 2 manufacturer part numbers on file: A105078A (Raytheon Company Dba Raytheon Co), 105078B (Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road)).
1 possible match (shared part number, not a government interchangeability claim): 3010-00-939-8963. Verify interchangeability with system specifications before substitution.
Key specifications for A105078A: Length: 0.441 INCHES NOMINAL IN; Body Style: RECTANGULAR COMMUTATOR; Style Designator: ONE PIECE; Material Document and Classification: MORGANITE BRUSH CO. INC,GR H-6782 MFR REF SINGLE MATERIAL RESPONSE. 12 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.