The Insulator,washer, cataloged under National Stock Number 5970-01-117-9435, 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 Aero-Plastics, Inc.. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5970-01-117-9435 |
| Primary Part Number | 4M116-29001 |
| Item Name | Insulator,washer |
| FSC / FSG | 5970 / 59 — Electrical Insulators and Insulating Materials |
| Manufacturer | Aero-Plastics, Inc. |
| Status | ACTIVE |
| Style Designator | ROUND, FLAT |
| Material Document and Classification | MIL-P-19468, GROUP A MIL SPEC SINGLE MATERIAL RESPONSE OR MIL-P-22241, TYPE 1, GRADE B MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 3.970 INCHES MINIMUM AND 4.000 INCHES MAXIMUM IN |
| Inside Diameter | 3.505 INCHES MINIMUM AND 3.525 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 |
| Part Number | Manufacturer |
|---|---|
| 4M116-29001 PRIMARY | Aero-Plastics, Inc. (USA) |
| 4M116-29001 | K & L Precision Plastics Inc Div K & L Prescison Plastics, Inc. (USA) |
| 4M116-29001 PRIMARY | Anillo Industries Llc (USA) |
| 4M116-29001 PRIMARY | Plastifab, Inc. Dba Plastifab Leed Plastics Div Plasifab Inc. (USA) |
| Reference | Meaning |
|---|---|
| 4M116-29001 | 5/9 Secondary reference Plastifab Incorporated |
| 10154455 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 4M116-29001 | 5/9 Secondary reference The Boeing Company Div Defense |
| 4M116-29001 | 5/9 Secondary reference Jetron Inc |
NSN 5970-01-117-9435 is a Insulator,washer, manufactured by Aero-Plastics, Inc., classified under FSC 5970, Electrical Insulators and Insulating Materials. Status: active.
NSN 5970-01-117-9435 has 4 manufacturer part numbers on file: 4M116-29001 (Aero-Plastics, Inc.), 4M116-29001 (K & L Precision Plastics Inc Div K & L Prescison Plastics, Inc.), 4M116-29001 (Anillo Industries Llc), 4M116-29001 (Plastifab, Inc. Dba Plastifab Leed Plastics Div Plasifab Inc.).
Key specifications for 4M116-29001: Overall Height: 0.035 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN; Style Designator: ROUND, FLAT; Material Document and Classification: MIL-P-19468, GROUP A MIL SPEC SINGLE MATERIAL RESPONSE OR MIL-P-22241, TYPE 1, GRADE B MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 3.970 INCHES MINIMUM AND 4.000 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.