The Insulator,washer, cataloged under National Stock Number 5970-00-890-5231, 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 Magna Tech Electronic Co Inc Dba Mte. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5970-00-890-5231 |
| Primary Part Number | 721066 |
| Item Name | Insulator,washer |
| FSC / FSG | 5970 / 59 — Electrical Insulators and Insulating Materials |
| Manufacturer | Magna Tech Electronic Co Inc Dba Mte |
| Status | ACTIVE |
| Style Designator | ROUND, FLAT |
| Outside Diameter | 0.500 INCHES NOMINAL IN |
| Inside Diameter | 0.250 INCHES NOMINAL IN |
| Material | FIBER 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 |
|---|---|
| 721066 | Magna Tech Electronic Co Inc Dba Mte (USA) |
| Reference | Meaning |
|---|---|
| 621066 | 3/9 Design control — primary reference Bell and Howell Phillipsburg Co Corporate Offices |
NSN 5970-00-890-5231 is a Insulator,washer, manufactured by Magna Tech Electronic Co Inc Dba Mte, classified under FSC 5970, Electrical Insulators and Insulating Materials. Status: active.
NSN 5970-00-890-5231 has 1 manufacturer part number on file: 721066 (Magna Tech Electronic Co Inc Dba Mte).
Key specifications for 721066: Overall Height: 0.004 INCHES NOMINAL IN; Style Designator: ROUND, FLAT; Outside Diameter: 0.500 INCHES NOMINAL IN; Inside Diameter: 0.250 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.