The Ring,electrical Contact, cataloged under National Stock Number 5977-00-552-5812, 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 Conductix Inc Div Conductix Wampfler. Government technical data includes 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5977-00-552-5812 |
| Primary Part Number | CA12177 |
| Item Name | Ring,electrical Contact |
| FSC / FSG | 5977 / 59 — Electrical Contact Brushes and Electrodes |
| Manufacturer | Conductix Inc Div Conductix Wampfler |
| Status | ACTIVE |
| Shape | CYLINDRICAL |
| Outside Diameter | 2.750 INCHES NOMINAL IN |
| Mounting Configuration | ONE 2.500 IN. DIA MOUNTING HOLE IN |
| Material | COPPER |
| 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 |
|---|---|
| CA12177 PRIMARY | Conductix Inc Div Conductix Wampfler (USA) |
| Reference | Meaning |
|---|---|
| RA2-4 | 5/9 Secondary reference Conductix Inc Div Conductix Wampfler |
NSN 5977-00-552-5812 is a Ring,electrical Contact, manufactured by Conductix Inc Div Conductix Wampfler, classified under FSC 5977, Electrical Contact Brushes and Electrodes. Status: active.
NSN 5977-00-552-5812 has 1 manufacturer part number on file: CA12177 (Conductix Inc Div Conductix Wampfler).
1 possible match (shared part number, not a government interchangeability claim): 4920-01-045-5510. Verify interchangeability with system specifications before substitution.
Key specifications for CA12177: Shape: CYLINDRICAL; Outside Diameter: 2.750 INCHES NOMINAL IN; Special Features: 0.281 IN. THK IN; Mounting Configuration: ONE 2.500 IN. DIA MOUNTING HOLE IN. 4 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.