The Contact Set,collector Ring, cataloged under National Stock Number 5977-01-459-4755, is classified within Federal Supply Class 5977 (Electrical Contact Brushes and Electrodes) of the Electrical and Electronic Equipment Components group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5977-01-459-4755 |
| Item Name | Contact Set,collector Ring |
| FSC / FSG | 5977 / 59 — Electrical Contact Brushes and Electrodes |
| Status | ACTIVE |
| Contact Type | SPRING LEAF |
| Contact Quantity | 19 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 1103155-001 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5977-01-459-4755 is a Contact Set,collector Ring, classified under FSC 5977, Electrical Contact Brushes and Electrodes. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 9905-01-487-7356. Verify interchangeability with system specifications before substitution.
Key specifications for 5977-01-459-4755: Contact Type: SPRING LEAF; Contact Quantity: 19; Special Features: BRUSH BLOCK IS 4.000 IN LONG BY 2.343 IN WIDE BY 0.190 IN HIGH, RISING ANOTHER 0.390 IN; RAISED AREA IS 2.995 IN LONG BY 2.215 IN WIDE, CONTAINS POTTING MATERIAL, 19 LEAD WIRES 12 IN MIN (LENGTH), AND 19 BRUSH LEAF ASSEMBLIES; BRUSH DEFLECTION 0.100 (6 DEG); BRUSH FORCE 0.026 LBS (11.8 GRAMS); FREE POSITION BRUSH ASSEMBLIES ARE 0.550 IN AS MEASURED FROM 0.190 IN HEIGHT; TWO 0.125 IN DIA MOUNTING HOLES LOCATED ON EACH SIDE OF BLOCK (4 HOLES TOTAL) ARE SPACED 3.500 IN APART ALONG LENGTH OF BLOCK AND 1.437 IN APART ALONG WIDTH; DIELECTRIC STRENGTH 500.0 VRMS AT 60 HERTZ FOR 15 SECONDS; INSULATION RESISTANCE 500.0 MEGOHMS MINIMUM AT 500.0 VDC VDC. 2 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.