The Insulator,washer, cataloged under National Stock Number 5970-01-130-6531, 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 Fm Af, Llc Dba American Fan Company. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5970-01-130-6531 |
| Primary Part Number | 87374-4 |
| Item Name | Insulator,washer |
| FSC / FSG | 5970 / 59 — Electrical Insulators and Insulating Materials |
| Manufacturer | Fm Af, Llc Dba American Fan Company |
| Status | ACTIVE |
| Style Designator | ROUND, FLAT |
| Outside Diameter | 1.000 INCHES NOMINAL IN |
| Inside Diameter | 0.375 INCHES NOMINAL IN |
| Material | OVERALL RUBBER,LAMINATED FABRIC |
| 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 |
|---|---|
| 87374-4 PRIMARY | Fm Af, Llc Dba American Fan Company (USA) |
| Reference | Meaning |
|---|---|
| 5970PL0922212 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5970-01-130-6531 is a Insulator,washer, manufactured by Fm Af, Llc Dba American Fan Company, classified under FSC 5970, Electrical Insulators and Insulating Materials. Status: active.
NSN 5970-01-130-6531 has 1 manufacturer part number on file: 87374-4 (Fm Af, Llc Dba American Fan Company).
1 possible match (shared part number, not a government interchangeability claim): 6150-01-519-3942. Verify interchangeability with system specifications before substitution.
Key specifications for 87374-4: Overall Height: 0.125 INCHES NOMINAL IN; Style Designator: ROUND, FLAT; Outside Diameter: 1.000 INCHES NOMINAL IN; Inside Diameter: 0.375 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.