The Ring Assembly,electrical Contact, cataloged under National Stock Number 5977-01-453-5579, 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 Institute of Management Instruction Inc Dba International Management Institute. 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 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 | 5977-01-453-5579 |
| Primary Part Number | AQ-SSR-100 |
| Item Name | Ring Assembly,electrical Contact |
| FSC / FSG | 5977 / 59 — Electrical Contact Brushes and Electrodes |
| Manufacturer | Institute of Management Instruction Inc Dba International Management Institute |
| Status | ACTIVE |
| Precious Material | GOLD AND SILVER |
| Diameter | 2.750 INCHES NOMINAL IN |
| Width | 0.080 INCHES NOMINAL IN |
| Contact Ring Quantity | 2 |
| 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 |
|---|---|
| AQ-SSR-100 PRIMARY | Institute of Management Instruction Inc Dba International Management Institute (USA) |
NSN 5977-01-453-5579 is a Ring Assembly,electrical Contact, manufactured by Institute of Management Instruction Inc Dba International Management Institute, classified under FSC 5977, Electrical Contact Brushes and Electrodes. Status: active.
NSN 5977-01-453-5579 has 1 manufacturer part number on file: AQ-SSR-100 (Institute of Management Instruction Inc Dba International Management Institute).
1 possible match (shared part number, not a government interchangeability claim): 5977-01-678-7039. Verify interchangeability with system specifications before substitution.
Key specifications for AQ-SSR-100: Precious Material: GOLD AND SILVER; Diameter: 2.750 INCHES NOMINAL IN; Special Features: CENTER STRIP 0.875 IN. NOM X 0.020 IN. NOM IN; Width: 0.080 INCHES NOMINAL 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.