The Insulator,washer, cataloged under National Stock Number 5970-01-477-8552, is classified within Federal Supply Class 5970 (Electrical Insulators and Insulating Materials) of the Electrical and Electronic Equipment Components group. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5970-01-477-8552 |
| Item Name | Insulator,washer |
| FSC / FSG | 5970 / 59 — Electrical Insulators and Insulating Materials |
| Status | ACTIVE |
| Style Designator | ROUND, FLAT |
| Outside Diameter | 3.000 INCHES NOMINAL IN |
| Inside Diameter | 1.750 INCHES NOMINAL IN |
| Material | MICA OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 12-800-010 | 3/9 Design control — primary reference U.S. Government activity |
| 12-800-XXX | D/9 Drawing number reference only U.S. Government activity |
NSN 5970-01-477-8552 is a Insulator,washer, classified under FSC 5970, Electrical Insulators and Insulating Materials. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 6210-01-547-0645. Verify interchangeability with system specifications before substitution.
Key specifications for 5970-01-477-8552: Overall Height: 0.062 INCHES NOMINAL IN; Style Designator: ROUND, FLAT; Outside Diameter: 3.000 INCHES NOMINAL IN; Inside Diameter: 1.750 INCHES NOMINAL IN. 4 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.