The Brush,electrical Contact, cataloged under National Stock Number 5977-00-644-2618, 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 Ametek Inc Lamb Electric Div. Government technical data includes 18 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5977-00-644-2618 |
| Primary Part Number | 35099A |
| Item Name | Brush,electrical Contact |
| FSC / FSG | 5977 / 59 — Electrical Contact Brushes and Electrodes |
| Manufacturer | Ametek Inc Lamb Electric Div |
| Status | ACTIVE |
| Length | 0.844 INCHES NOMINAL IN |
| Body Style | RECTANGULAR COMMUTATOR |
| Radius | 0.625 INCHES NOMINAL IN |
| Top Style | CYLINDRICAL HEAD |
| Shunt Position Designator | 5 |
| Style Designator | ONE PIECE |
| Material Document and Classification | MORGANITE GRADE EG826 MFR REF SINGLE MATERIAL RESPONSE |
| Spring Free Length | 1.125 INCHES NOMINAL IN |
| Pressure Spring Type and Quantity | 1 CYLINDRICAL |
| Head Length | 0.093 INCHES NOMINAL IN |
| Brush Shunt Length | 1.125 INCHES NOMINAL SINGLE SHUNT IN |
| Contact Face Style | CONCAVE |
| Shunt Insulation Provision and Quantity | 1 UNINSULATED |
| Width | 0.367 INCHES MINIMUM AND 0.372 INCHES MAXIMUM IN |
| Material | ELECTROGRAPHITIC |
| Terminal Type and Quantity | 1 ROUND CAP |
| Thickness | 0.242 INCHES MINIMUM AND 0.247 INCHES MAXIMUM IN |
| Head Diameter | 0.213 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 |
|---|---|
| 35099A | Ametek Inc Lamb Electric Div (USA) |
| Reference | Meaning |
|---|---|
| 01-03968 | 3/9 Design control — primary reference Morganite Inc |
| X3968 | 5/9 Secondary reference Morganite Inc |
NSN 5977-00-644-2618 is a Brush,electrical Contact, manufactured by Ametek Inc Lamb Electric Div, classified under FSC 5977, Electrical Contact Brushes and Electrodes. Status: active.
NSN 5977-00-644-2618 has 1 manufacturer part number on file: 35099A (Ametek Inc Lamb Electric Div).
Key specifications for 35099A: Length: 0.844 INCHES NOMINAL IN; Body Style: RECTANGULAR COMMUTATOR; Radius: 0.625 INCHES NOMINAL IN; Top Style: CYLINDRICAL HEAD. 18 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.