The Insulator,bushing, cataloged under National Stock Number 5970-00-322-5181, 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 Leica Inc Surveying and Photogrammetry Systems Div. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5970-00-322-5181 |
| Primary Part Number | 21157V |
| Item Name | Insulator,bushing |
| FSC / FSG | 5970 / 59 — Electrical Insulators and Insulating Materials |
| Manufacturer | Leica Inc Surveying and Photogrammetry Systems Div |
| Status | ACTIVE |
| Style Designator | CYLINDRICAL |
| Material Document and Classification | MIL-P-79, TYPE PBE MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.219 INCHES NOMINAL IN |
| Inside Diameter | 0.120 INCHES NOMINAL IN |
| End Configuration | BOTH ENDS SQUARED |
| Material | PLASTIC PHENOLIC AND PAPER 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 |
|---|---|
| 21157V PRIMARY | Leica Inc Surveying and Photogrammetry Systems Div (USA) |
| Reference | Meaning |
|---|---|
| SC-B-18942 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5970-00-322-5181 is a Insulator,bushing, manufactured by Leica Inc Surveying and Photogrammetry Systems Div, classified under FSC 5970, Electrical Insulators and Insulating Materials. Status: active.
NSN 5970-00-322-5181 has 1 manufacturer part number on file: 21157V (Leica Inc Surveying and Photogrammetry Systems Div).
Key specifications for 21157V: Overall Height: 0.656 INCHES NOMINAL IN; Style Designator: CYLINDRICAL; Material Document and Classification: MIL-P-79, TYPE PBE MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 0.219 INCHES NOMINAL 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.