The Insulator,washer, cataloged under National Stock Number 5970-00-498-6590, 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 Spencer Industries Inc. 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5970-00-498-6590 |
| Primary Part Number | 580R635H08 |
| Item Name | Insulator,washer |
| FSC / FSG | 5970 / 59 — Electrical Insulators and Insulating Materials |
| Manufacturer | Spencer Industries Inc |
| Status | ACTIVE |
| Style Designator | ROUND, FLAT |
| Outside Diameter | 0.812 INCHES NOMINAL IN |
| Inside Diameter | 0.266 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 |
|---|---|
| 580R635H08 | Spencer Industries Inc (USA) |
| Reference | Meaning |
|---|---|
| 580R635H08 | 7/9 Vendor item drawing reference U.S. Government activity |
| 580R635H08 | 5/9 Secondary reference Thermalloy Co Inc |
| 580R635H08 | 7/2 Vendor item drawing reference Northrop Grumman Support Services Corp |
| 580R635H08 | 3/9 Design control — primary reference Brush Wellman Inc Consolidated Ceramics and Metalizing Corp Div |
NSN 5970-00-498-6590 is a Insulator,washer, manufactured by Spencer Industries Inc, classified under FSC 5970, Electrical Insulators and Insulating Materials. Status: active.
NSN 5970-00-498-6590 has 1 manufacturer part number on file: 580R635H08 (Spencer Industries Inc).
Key specifications for 580R635H08: Overall Height: 0.031 INCHES NOMINAL IN; Style Designator: ROUND, FLAT; Outside Diameter: 0.812 INCHES NOMINAL IN; Inside Diameter: 0.266 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.