The Insulator,washer, cataloged under National Stock Number 5970-00-488-5386, 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 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5970-00-488-5386 |
| Primary Part Number | 580R635H04 |
| Item Name | Insulator,washer |
| FSC / FSG | 5970 / 59 — Electrical Insulators and Insulating Materials |
| Manufacturer | Northrop Grumman Support Services Corp |
| Status | ACTIVE |
| Style Designator | ROUND, FLAT |
| Outside Diameter | 0.531 INCHES NOMINAL IN |
| Inside Diameter | 0.203 INCHES NOMINAL IN |
| 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 |
|---|---|
| 580R635H04 PRIMARY | Northrop Grumman Support Services Corp (USA) |
| Reference | Meaning |
|---|---|
| 580R635H04 | 3/9 Design control — primary reference U.S. Government activity |
| 580R635M | D/9 Drawing number reference only U.S. Government activity |
NSN 5970-00-488-5386 is a Insulator,washer, manufactured by Northrop Grumman Support Services Corp, classified under FSC 5970, Electrical Insulators and Insulating Materials. Status: active.
NSN 5970-00-488-5386 has 1 manufacturer part number on file: 580R635H04 (Northrop Grumman Support Services Corp).
Key specifications for 580R635H04: Overall Height: 0.025 INCHES NOMINAL IN; Style Designator: ROUND, FLAT; Outside Diameter: 0.531 INCHES NOMINAL IN; Inside Diameter: 0.203 INCHES NOMINAL IN. 3 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.