The Insulator,disk, cataloged under National Stock Number 5970-01-287-9774, 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 Lockheed Martin Corporation Div Rms. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5970-01-287-9774 |
| Primary Part Number | 1210B0543-2 |
| Item Name | Insulator,disk |
| FSC / FSG | 5970 / 59 — Electrical Insulators and Insulating Materials |
| Manufacturer | Lockheed Martin Corporation Div Rms |
| Status | ACTIVE |
| First Hole Diameter | 0.625 INCHES NOMINAL IN |
| Style Designator | DRILLED, FLAT |
| Material Document and Classification | MIL-P-18177, TYPE GEE MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.630 INCHES NOMINAL IN |
| Second Hole Spacing | 1.125 INCHES NOMINAL IN |
| Second Hole Diameter | 0.136 INCHES NOMINAL IN |
| First Hole Spacing | 0.562 INCHES NOMINAL IN |
| Material | GLASS FIBER AND PLASTIC EPOXY 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 |
|---|---|
| 1210B0543-2 PRIMARY | Lockheed Martin Corporation Div Rms (USA) |
| Reference | Meaning |
|---|---|
| 1210B0543-2 | 5/9 Secondary reference Martin Marietta Technologies Inc Sub of Martin Marietta Corp Aero and Naval Systems |
NSN 5970-01-287-9774 is a Insulator,disk, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 5970, Electrical Insulators and Insulating Materials. Status: active.
NSN 5970-01-287-9774 has 1 manufacturer part number on file: 1210B0543-2 (Lockheed Martin Corporation Div Rms).
Key specifications for 1210B0543-2: Overall Height: 0.125 INCHES NOMINAL IN; First Hole Diameter: 0.625 INCHES NOMINAL IN; Style Designator: DRILLED, FLAT; Material Document and Classification: MIL-P-18177, TYPE GEE MIL SPEC SINGLE MATERIAL RESPONSE OVERALL. 8 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.