The Insulator,plate, cataloged under National Stock Number 5970-01-007-0476, is classified within Federal Supply Class 5970 (Electrical Insulators and Insulating Materials) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Northrop Grumman Support Services Corp. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5970-01-007-0476 |
| Primary Part Number | 578R649H01 |
| Item Name | Insulator,plate |
| FSC / FSG | 5970 / 59 — Electrical Insulators and Insulating Materials |
| Manufacturer | Northrop Grumman Support Services Corp |
| Status | ACTIVE |
| First End Radius | 0.190 INCHES NOMINAL IN |
| Fifth Hole Spacing | 0.100 INCHES NOMINAL IN |
| First Hole Diameter | 0.157 INCHES NOMINAL IN |
| Third Hole Spacing | 0.960 INCHES NOMINAL IN |
| Style Designator | FLAT, DIAMOND |
| First Side Radius | 0.395 INCHES NOMINAL IN |
| Second Hole Spacing | 0.580 INCHES NOMINAL IN |
| Second Hole Diameter | 0.043 INCHES NOMINAL IN |
| Fourth Hole Spacing | 0.200 INCHES NOMINAL IN |
| First Hole Spacing | 0.190 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 |
| Part Number | Manufacturer |
|---|---|
| 578R649H01 | Reliance Mica Company, Inc. (USA) |
| 578R649H01 PRIMARY | Northrop Grumman Support Services Corp (USA) |
| 578R649H01 | Spencer Industries Inc (USA) |
| Reference | Meaning |
|---|---|
| 578R649H01 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5970-01-007-0476 is a Insulator,plate, manufactured by Northrop Grumman Support Services Corp, classified under FSC 5970, Electrical Insulators and Insulating Materials. Status: active.
NSN 5970-01-007-0476 has 3 manufacturer part numbers on file: 578R649H01 (Reliance Mica Company, Inc.), 578R649H01 (Northrop Grumman Support Services Corp), 578R649H01 (Spencer Industries Inc).
Key specifications for 578R649H01: Overall Height: 0.003 INCHES NOMINAL IN; First End Radius: 0.190 INCHES NOMINAL IN; Fifth Hole Spacing: 0.100 INCHES NOMINAL IN; First Hole Diameter: 0.157 INCHES NOMINAL IN. 11 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.