The Insulator,washer, cataloged under National Stock Number 5970-01-063-4834, 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 Army, United States Department of the Dba Rock Island Arsenal Jmtc. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5970-01-063-4834 |
| Primary Part Number | 8449355-1 |
| Item Name | Insulator,washer |
| FSC / FSG | 5970 / 59 — Electrical Insulators and Insulating Materials |
| Manufacturer | Army, United States Department of the Dba Rock Island Arsenal Jmtc |
| Status | ACTIVE |
| Style Designator | ROUND, FLAT |
| Material Document and Classification | MIL-R-25988,TYPE II,CLASS 1,GRADE 60 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.380 INCHES NOMINAL IN |
| Inside Diameter | 0.144 INCHES NOMINAL IN |
| Material | RUBBER FLUOROSILICONE CLASS FQ 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 |
|---|---|
| 8449355-1 PRIMARY | Army, United States Department of the Dba Rock Island Arsenal Jmtc (USA) |
| Reference | Meaning |
|---|---|
| 8449355C | D/9 Drawing number reference only Army, United States Department of the Dba Rock Island Arsenal Jmtc |
NSN 5970-01-063-4834 is a Insulator,washer, manufactured by Army, United States Department of the Dba Rock Island Arsenal Jmtc, classified under FSC 5970, Electrical Insulators and Insulating Materials. Status: active.
NSN 5970-01-063-4834 has 1 manufacturer part number on file: 8449355-1 (Army, United States Department of the Dba Rock Island Arsenal Jmtc).
1 possible match (shared part number, not a government interchangeability claim): 5970-01-063-4835. Verify interchangeability with system specifications before substitution.
Key specifications for 8449355-1: Overall Height: 0.016 INCHES NOMINAL IN; Style Designator: ROUND, FLAT; Material Document and Classification: MIL-R-25988,TYPE II,CLASS 1,GRADE 60 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 1.380 INCHES NOMINAL IN. 5 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.