The Insulator,washer, cataloged under National Stock Number 5970-01-137-4557, 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 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5970-01-137-4557 |
| Primary Part Number | 7242203P004 |
| Item Name | Insulator,washer |
| FSC / FSG | 5970 / 59 — Electrical Insulators and Insulating Materials |
| Manufacturer | Lockheed Martin Corporation Div Rms |
| Status | ACTIVE |
| Style Designator | ROUND, FLAT |
| Outside Diameter | 0.309 INCHES MINIMUM AND 0.316 INCHES MAXIMUM IN |
| Inside Diameter | 0.251 INCHES MINIMUM AND 0.258 INCHES MAXIMUM IN |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE 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 |
|---|---|
| 7242203P004 | Lockheed Martin Corporation Div Rms (USA) |
| Reference | Meaning |
|---|---|
| GE7242203P4 | 3/2 Design control — primary reference U.S. Government activity |
| 7242203P4 | C/1 Advisory reference — outside the item-of-supply concept Lockheed Martin Corporation Div Rms |
NSN 5970-01-137-4557 is a Insulator,washer, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 5970, Electrical Insulators and Insulating Materials. Status: active.
NSN 5970-01-137-4557 has 1 manufacturer part number on file: 7242203P004 (Lockheed Martin Corporation Div Rms).
Key specifications for 7242203P004: Overall Height: 0.029 INCHES MINIMUM AND 0.033 INCHES MAXIMUM IN; Style Designator: ROUND, FLAT; Outside Diameter: 0.309 INCHES MINIMUM AND 0.316 INCHES MAXIMUM IN; Inside Diameter: 0.251 INCHES MINIMUM AND 0.258 INCHES MAXIMUM 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.