The Brush,electrical Contact, cataloged under National Stock Number 5977-01-024-4801, 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 Kollmorgen Corp. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5977-01-024-4801 |
| Primary Part Number | 28173 |
| Item Name | Brush,electrical Contact |
| FSC / FSG | 5977 / 59 — Electrical Contact Brushes and Electrodes |
| Manufacturer | Kollmorgen Corp |
| Status | ACTIVE |
| Length | 0.520 INCHES NOMINAL IN |
| Terminal Diameter | 0.312 INCHES NOMINAL IN |
| Largest Outside Diameter | 0.240 INCHES NOMINAL IN |
| Body Style | RECTANGULAR COMMUTATOR |
| Shunt Position Designator | 5 |
| Style Designator | ONE PIECE |
| Material Document and Classification | STACKPOLE CARBON CO,GRADE 190 MFR REF SINGLE MATERIAL RESPONSE |
| Spring Free Length | 0.880 INCHES NOMINAL IN |
| Pressure Spring Type and Quantity | 1 CYLINDRICAL |
| Brush Shunt Length | 0.500 INCHES NOMINAL SINGLE SHUNT IN |
| Contact Face Style | FLAT |
| Shunt Insulation Provision and Quantity | 1 INSULATED |
| Width | 0.246 INCHES NOMINAL IN |
| Material | CARBON |
| Terminal Type and Quantity | 1 ROUND CAP |
| Thickness | 0.184 INCHES MINIMUM AND 0.186 INCHES MAXIMUM 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 |
|---|---|
| T-2712 | Kollmorgen Corp (USA) |
| 28173 PRIMARY | Kollmorgen Corp (USA) |
| 4256A411 FIGURE 1 | L-3 Communications Westwood Corporation Dba Edi Division Div Tano Division (USA) |
| Reference | Meaning |
|---|---|
| A28173 | 5/9 Secondary reference Kollmorgen Corp |
NSN 5977-01-024-4801 is a Brush,electrical Contact, manufactured by Kollmorgen Corp, classified under FSC 5977, Electrical Contact Brushes and Electrodes. Status: active.
NSN 5977-01-024-4801 has 3 manufacturer part numbers on file: T-2712 (Kollmorgen Corp), 28173 (Kollmorgen Corp), 4256A411 FIGURE 1 (L-3 Communications Westwood Corporation Dba Edi Division Div Tano Division).
4 possible matches (shared part number, not a government interchangeability claim): 6145-01-055-4011, 5310-01-212-1431, 5950-01-348-9822. Verify interchangeability with system specifications before substitution.
Key specifications for 28173: Length: 0.520 INCHES NOMINAL IN; Terminal Diameter: 0.312 INCHES NOMINAL IN; Largest Outside Diameter: 0.240 INCHES NOMINAL IN; Body Style: RECTANGULAR COMMUTATOR. 16 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.