The Brush,electrical Contact, cataloged under National Stock Number 5977-00-754-8154, 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 Thermo Electron Corporation Dba Iec Centrifuge Div Laboratory Equipment Divsion. Government technical data includes 19 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 5977-00-754-8154 |
| Primary Part Number | 1840 |
| Item Name | Brush,electrical Contact |
| FSC / FSG | 5977 / 59 — Electrical Contact Brushes and Electrodes |
| Manufacturer | Thermo Electron Corporation Dba Iec Centrifuge Div Laboratory Equipment Divsion |
| Status | ACTIVE |
| Length | 0.625 INCHES NOMINAL IN |
| Terminal Diameter | 0.421 INCHES NOMINAL IN |
| Largest Outside Diameter | 0.265 INCHES NOMINAL IN |
| Body Style | RECTANGULAR COMMUTATOR |
| Radius | 0.375 INCHES NOMINAL IN |
| Top Style | CYLINDRICAL HEAD |
| Shunt Position Designator | 5 |
| Style Designator | ONE PIECE |
| Spring Free Length | 1.250 INCHES NOMINAL IN |
| Pressure Spring Type and Quantity | 1 CONICAL |
| Head Length | 0.062 INCHES NOMINAL IN |
| Brush Shunt Length | 1.000 INCHES NOMINAL SINGLE SHUNT IN |
| Contact Face Style | CONCAVE |
| Shunt Insulation Provision and Quantity | 1 UNINSULATED |
| Width | 0.312 INCHES NOMINAL IN |
| Material | CARBON |
| Terminal Type and Quantity | 1 ROUND CAP W/EARS |
| Thickness | 0.218 INCHES NOMINAL IN |
| Head Diameter | 0.421 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 |
|---|---|
| 2517J30 | Arthur H. Thomas Company (USA) |
| 1840 PRIMARY | Thermo Electron Corporation Dba Iec Centrifuge Div Laboratory Equipment Divsion (USA) |
| Reference | Meaning |
|---|---|
| 2916T10 | 5/9 Secondary reference Arthur H. Thomas Company |
| 14470-104 | 5/9 Secondary reference Vwr Scientific Div of Univar |
| 5-040-3 | 5/9 Secondary reference Fisher Scientific Company L.l.c. |
| 048-314 | 5/9 Secondary reference Curtin Matheson Scientific Inc |
NSN 5977-00-754-8154 is a Brush,electrical Contact, manufactured by Thermo Electron Corporation Dba Iec Centrifuge Div Laboratory Equipment Divsion, classified under FSC 5977, Electrical Contact Brushes and Electrodes. Status: active.
NSN 5977-00-754-8154 has 2 manufacturer part numbers on file: 2517J30 (Arthur H. Thomas Company), 1840 (Thermo Electron Corporation Dba Iec Centrifuge Div Laboratory Equipment Divsion).
3 possible matches (shared part number, not a government interchangeability claim): 5310-01-050-8832, 6515-01-117-0506, 2995-01-156-7945. Verify interchangeability with system specifications before substitution.
Key specifications for 1840: Length: 0.625 INCHES NOMINAL IN; Terminal Diameter: 0.421 INCHES NOMINAL IN; Largest Outside Diameter: 0.265 INCHES NOMINAL IN; Body Style: RECTANGULAR COMMUTATOR. 19 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.