The Ring Assembly,electrical Contact, cataloged under National Stock Number 5977-00-871-2987, 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 Us Army Aviation and Missile Command. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5977-00-871-2987 |
| Primary Part Number | 10066859 |
| Item Name | Ring Assembly,electrical Contact |
| FSC / FSG | 5977 / 59 — Electrical Contact Brushes and Electrodes |
| Manufacturer | Us Army Aviation and Missile Command |
| Status | ACTIVE |
| FSC Application Data | ANTENNA-RECEIVER TRANSMITTER GROUP,MISSILE TRACKING |
| Overall Diameter | 6.000 INCHES NOMINAL IN |
| Diameter | 6.000 INCHES NOMINAL IN |
| Surface Treatment | SILVER RING |
| Mounting Configuration | FOUR 0.093 IN. DIA MTG HOLES EQUALLY SPACED ON 5.375 IN. DIA BOLT CIRCLE IN |
| Width | 0.109 INCHES NOMINAL IN |
| Contact Ring Quantity | 6 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | N |
| Part Number | Manufacturer |
|---|---|
| 10066859 PRIMARY | Us Army Aviation and Missile Command (USA) |
| Reference | Meaning |
|---|---|
| 10066859 | 5/9 Secondary reference Occo Mfg Corp |
| 10066859 | 5/1 Secondary reference U.S. Government activity |
NSN 5977-00-871-2987 is a Ring Assembly,electrical Contact, manufactured by Us Army Aviation and Missile Command, classified under FSC 5977, Electrical Contact Brushes and Electrodes. Status: active.
NSN 5977-00-871-2987 has 1 manufacturer part number on file: 10066859 (Us Army Aviation and Missile Command).
Key specifications for 10066859: FSC Application Data: ANTENNA-RECEIVER TRANSMITTER GROUP,MISSILE TRACKING; Overall Diameter: 6.000 INCHES NOMINAL IN; Diameter: 6.000 INCHES NOMINAL IN; Overall Length: 2.465 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.