The Insulator,bushing, cataloged under National Stock Number 5970-00-539-6301, 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 General Motors Corp. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5970-00-539-6301 |
| Primary Part Number | 6526859 |
| Item Name | Insulator,bushing |
| FSC / FSG | 5970 / 59 — Electrical Insulators and Insulating Materials |
| Manufacturer | General Motors Corp |
| Status | ACTIVE |
| First Step Diameter | 0.820 INCHES NOMINAL IN |
| Flange Thickness | 0.090 INCHES NOMINAL IN |
| Style Designator | STEPPED, ROUND |
| Outside Diameter | 0.380 INCHES NOMINAL IN |
| Second Step Diameter | 0.477 INCHES NOMINAL IN |
| Inside Diameter | 1.000 INCHES NOMINAL IN |
| First Step Height | 0.075 INCHES NOMINAL IN |
| Second Step Height | 0.225 INCHES NOMINAL IN |
| Unable to Decode | UNABLE TO DECODE |
| 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 |
|---|---|
| 6526859 | General Motors Corp (USA) |
| Reference | Meaning |
|---|---|
| 6526859 | 3/9 Design control — primary reference Aeroproducts Opns of Allison Div of General Motors Corp |
NSN 5970-00-539-6301 is a Insulator,bushing, manufactured by General Motors Corp, classified under FSC 5970, Electrical Insulators and Insulating Materials. Status: active.
NSN 5970-00-539-6301 has 1 manufacturer part number on file: 6526859 (General Motors Corp).
Key specifications for 6526859: First Step Diameter: 0.820 INCHES NOMINAL IN; Flange Thickness: 0.090 INCHES NOMINAL IN; Style Designator: STEPPED, ROUND; Outside Diameter: 0.380 INCHES NOMINAL IN. 9 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.