The Insulator,bushing, cataloged under National Stock Number 5970-00-074-2163, 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 Grimes Aerospace Company. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 5970-00-074-2163 |
| Primary Part Number | A8387-1 |
| Item Name | Insulator,bushing |
| FSC / FSG | 5970 / 59 — Electrical Insulators and Insulating Materials |
| Manufacturer | Grimes Aerospace Company |
| Status | ACTIVE |
| First Slot Width | 0.062 INCHES NOMINAL IN |
| Style Designator | CYLINDRICAL |
| Wall Thickness | 0.031 INCHES NOMINAL IN |
| Outside Diameter | 0.224 INCHES MINIMUM AND 0.230 INCHES MAXIMUM IN |
| Unable to Decode | UNABLE TO DECODE |
| 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 |
|---|---|
| A8387-1 PRIMARY | Grimes Aerospace Company (USA) |
| Reference | Meaning |
|---|---|
| A-8387 | 5/1 Secondary reference Grimes Aerospace Company |
NSN 5970-00-074-2163 is a Insulator,bushing, manufactured by Grimes Aerospace Company, classified under FSC 5970, Electrical Insulators and Insulating Materials. Status: active.
NSN 5970-00-074-2163 has 1 manufacturer part number on file: A8387-1 (Grimes Aerospace Company).
3 possible matches (shared part number, not a government interchangeability claim): 1680-00-463-0852, 3120-01-015-1040, 2530-01-415-3172. Verify interchangeability with system specifications before substitution.
Key specifications for A8387-1: Overall Height: 0.344 INCHES NOMINAL IN; First Slot Width: 0.062 INCHES NOMINAL IN; Style Designator: CYLINDRICAL; Wall Thickness: 0.031 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.