The Insulator,bushing, cataloged under National Stock Number 5970-00-050-2003, 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 Prestolite Electric Inc. Government technical data includes 6 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5970-00-050-2003 |
| Primary Part Number | 57135 |
| Item Name | Insulator,bushing |
| FSC / FSG | 5970 / 59 — Electrical Insulators and Insulating Materials |
| Manufacturer | Prestolite Electric Inc |
| Status | ACTIVE |
| Style Designator | CYLINDRICAL |
| Material Document and Classification | MIL-P-79, TYPE PBM MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.229 INCHES MINIMUM AND 0.239 INCHES MAXIMUM IN |
| Inside Diameter | 0.166 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN |
| End Configuration | BOTH ENDS SQUARED |
| Material | PAPER AND PLASTIC PHENOLIC 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 |
|---|---|
| 57135 PRIMARY | Prestolite Electric Inc (USA) |
| Reference | Meaning |
|---|---|
| Z082057135 | 5/9 Secondary reference Prestolite Electric Inc |
| 57135 | 5/9 Secondary reference Prestolite Electric Inc |
NSN 5970-00-050-2003 is a Insulator,bushing, manufactured by Prestolite Electric Inc, classified under FSC 5970, Electrical Insulators and Insulating Materials. Status: active.
NSN 5970-00-050-2003 has 1 manufacturer part number on file: 57135 (Prestolite Electric Inc).
1 possible match (shared part number, not a government interchangeability claim): 5999-01-707-2658. Verify interchangeability with system specifications before substitution.
Key specifications for 57135: Overall Height: 0.166 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN; Style Designator: CYLINDRICAL; Material Document and Classification: MIL-P-79, TYPE PBM MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 0.229 INCHES MINIMUM AND 0.239 INCHES MAXIMUM IN. 6 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.