The Brush,electrical Contact, cataloged under National Stock Number 5977-00-033-3850, 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 Fairbanks Morse, Llc. Government technical data includes 15 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5977-00-033-3850 |
| Primary Part Number | S4508SH21PC18497 |
| Item Name | Brush,electrical Contact |
| FSC / FSG | 5977 / 59 — Electrical Contact Brushes and Electrodes |
| Manufacturer | Fairbanks Morse, Llc |
| Status | ACTIVE |
| Length | 2.000 INCHES NOMINAL IN |
| Peripheral Speed | 6500 FEET PER MINUTE FT |
| Body Style | RECTANGULAR COMMUTATOR |
| Terminal Slot Width | 0.437 INCHES NOMINAL IN |
| Top Style | BEVELED FRONT WITH RIGHT EDGE BEVELED |
| Shunt Position Designator | 8 |
| Style Designator | ONE PIECE |
| Material Document and Classification | MORGANITE INC,GRADE EG10 MFR REF SINGLE MATERIAL RESPONSE |
| Angle | 20.0 DEGREES NOMINAL |
| Brush Shunt Length | 3.250 INCHES NOMINAL SINGLE SHUNT IN |
| Contact Face Style | FLAT |
| Width | 1.000 INCHES NOMINAL IN |
| Material | ELECTROGRAPHITIC |
| Terminal Type and Quantity | 1 STRAIGHT W/SLOT |
| Thickness | 0.625 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 |
|---|---|
| S4508SH21PC18497 PRIMARY | Fairbanks Morse, Llc (USA) |
| Reference | Meaning |
|---|---|
| S4508SH21PC18497 | 3/9 Design control — primary reference U.S. Government activity |
| 18479 | 5/9 Secondary reference Colt Industries Inc Power Systems Div |
| ANSI/NEMA PUB NO. CB1 | 5/9 Secondary reference U.S. Government activity |
NSN 5977-00-033-3850 is a Brush,electrical Contact, manufactured by Fairbanks Morse, Llc, classified under FSC 5977, Electrical Contact Brushes and Electrodes. Status: active.
NSN 5977-00-033-3850 has 1 manufacturer part number on file: S4508SH21PC18497 (Fairbanks Morse, Llc).
Key specifications for S4508SH21PC18497: Length: 2.000 INCHES NOMINAL IN; Peripheral Speed: 6500 FEET PER MINUTE FT; Body Style: RECTANGULAR COMMUTATOR; Terminal Slot Width: 0.437 INCHES NOMINAL IN. 15 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.