The Insulator,washer, cataloged under National Stock Number 5970-00-491-5334, is classified within Federal Supply Class 5970 (Electrical Insulators and Insulating Materials) of the Electrical and Electronic Equipment Components group. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5970-00-491-5334 |
| Item Name | Insulator,washer |
| FSC / FSG | 5970 / 59 — Electrical Insulators and Insulating Materials |
| Status | ACTIVE |
| Material and Location | OVERALL PLASTIC, POLYAMIDE, TYPE H, E I DUPONT DE NEMOURS AND CO INC |
| Style Designator | ROUND, FLAT |
| Outside Diameter | 0.437 INCHES NOMINAL IN |
| Inside Diameter | 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 4505-5 | 3/9 Design control — primary reference Thermalloy Co Inc |
| 352-9605-230 | 7/2 Vendor item drawing reference Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems |
| A421-14 | 5/9 Secondary reference U.S. Government activity |
| 352-9605-230 | 5/2 Secondary reference U.S. Government activity |
NSN 5970-00-491-5334 is a Insulator,washer, classified under FSC 5970, Electrical Insulators and Insulating Materials. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 5935-01-317-2486, 2990-01-360-6414, 5305-01-591-5752. Verify interchangeability with system specifications before substitution.
Key specifications for 5970-00-491-5334: Overall Height: 0.005 INCHES NOMINAL IN; Material and Location: OVERALL PLASTIC, POLYAMIDE, TYPE H, E I DUPONT DE NEMOURS AND CO INC; Style Designator: ROUND, FLAT; Outside Diameter: 0.437 INCHES NOMINAL 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.