The Ring,electrical Contact, cataloged under National Stock Number 5977-01-204-6433, 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 Ward Leonard Ct Llc. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5977-01-204-6433 |
| Primary Part Number | 25400030 |
| Item Name | Ring,electrical Contact |
| FSC / FSG | 5977 / 59 — Electrical Contact Brushes and Electrodes |
| Manufacturer | Ward Leonard Ct Llc |
| Status | ACTIVE |
| FSC Application Data | RADAR EQUIPMENT,EXCEPT AIRBORNE |
| Overall Diameter | 5.625 INCHES NOMINAL IN |
| Shape | DISK |
| Outside Diameter | 5.500 INCHES NOMINAL IN |
| Inside Diameter | 4.045 INCHES NOMINAL IN |
| Mounting Configuration | TWENTY NINE 0.270 IN. DIA HOLES SPACED EQUALLY ON A 4.690 DIA IN |
| Material | STEEL |
| 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 |
|---|---|
| 25400030 PRIMARY | Ward Leonard Ct Llc (USA) |
| Reference | Meaning |
|---|---|
| 25400030 | 3/9 Design control — primary reference Ward Leonard Ct Llc |
NSN 5977-01-204-6433 is a Ring,electrical Contact, manufactured by Ward Leonard Ct Llc, classified under FSC 5977, Electrical Contact Brushes and Electrodes. Status: active.
NSN 5977-01-204-6433 has 1 manufacturer part number on file: 25400030 (Ward Leonard Ct Llc).
1 possible match (shared part number, not a government interchangeability claim): 1560-01-362-7062. Verify interchangeability with system specifications before substitution.
Key specifications for 25400030: FSC Application Data: RADAR EQUIPMENT,EXCEPT AIRBORNE; Overall Diameter: 5.625 INCHES NOMINAL IN; Shape: DISK; Overall Width: 5.250 INCHES NOMINAL IN. 7 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.