The Brush,electrical Contact, cataloged under National Stock Number 5977-00-178-8103, 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 Div Aerospace-Tucson. Government technical data includes 17 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5977-00-178-8103 |
| Primary Part Number | PB-23805-1 |
| Item Name | Brush,electrical Contact |
| FSC / FSG | 5977 / 59 — Electrical Contact Brushes and Electrodes |
| Manufacturer | Honeywell International, Inc Div Aerospace-Tucson |
| Status | ACTIVE |
| Length | 0.281 INCHES NOMINAL IN |
| Terminal Diameter | 0.255 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN |
| Largest Outside Diameter | 0.164 INCHES NOMINAL IN |
| Body Style | RECTANGULAR COMMUTATOR |
| Radius | 0.203 INCHES NOMINAL IN |
| Shunt Position Designator | 5 |
| Style Designator | ONE PIECE |
| Material Document and Classification | MORGANITE INC,GR HM-6782 MFR REF SINGLE MATERIAL RESPONSE |
| Spring Free Length | 0.625 INCHES NOMINAL IN |
| Pressure Spring Type and Quantity | 1 CYLINDRICAL |
| Brush Shunt Length | 0.625 INCHES NOMINAL SINGLE SHUNT IN |
| Contact Face Style | CONCAVE |
| Shunt Insulation Provision and Quantity | 1 UNINSULATED |
| Width | 0.185 INCHES NOMINAL IN |
| Material | GRAPHITE |
| Terminal Type and Quantity | 1 ROUND CAP |
| Thickness | 0.185 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 |
|---|---|
| PB-23805-1 PRIMARY | Honeywell International, Inc Div Aerospace-Tucson (USA) |
| Reference | Meaning |
|---|---|
| PB-23805-1 | 3/9 Design control — primary reference U.S. Government activity |
| PB-23805-1 | 5/9 Secondary reference Honeywell Intl Inc Defense Avionics Systems Former Bendix Navigation and Control Systems |
NSN 5977-00-178-8103 is a Brush,electrical Contact, manufactured by Honeywell International, Inc Div Aerospace-Tucson, classified under FSC 5977, Electrical Contact Brushes and Electrodes. Status: active.
NSN 5977-00-178-8103 has 1 manufacturer part number on file: PB-23805-1 (Honeywell International, Inc Div Aerospace-Tucson).
Key specifications for PB-23805-1: Length: 0.281 INCHES NOMINAL IN; Terminal Diameter: 0.255 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN; Largest Outside Diameter: 0.164 INCHES NOMINAL IN; Body Style: RECTANGULAR COMMUTATOR. 17 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.