The Insulator,spacer, cataloged under National Stock Number 5970-01-277-6491, 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 The Boeing Company Div Defense. Government technical data includes 6 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5970-01-277-6491 |
| Primary Part Number | 4M268-84-1 |
| Item Name | Insulator,spacer |
| FSC / FSG | 5970 / 59 — Electrical Insulators and Insulating Materials |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| First Hole Diameter | 0.250 INCHES MINIMUM AND 0.256 INCHES MAXIMUM IN |
| Style Designator | FLAT, RECTANGULAR |
| Material Document and Classification | ALUMINUM ALLOY,ALCLAD 2024-T81 OR 2024-T72 SHEET,QQ-A-250/5 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Second Hole Spacing | 0.250 INCHES NOMINAL IN |
| First Hole Spacing | 0.590 INCHES NOMINAL IN |
| Material | GLASS FIBER AND PLASTIC EPOXY 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 |
|---|---|
| 4M268-84-1 PRIMARY | The Boeing Company Div Defense (USA) |
NSN 5970-01-277-6491 is a Insulator,spacer, manufactured by The Boeing Company Div Defense, classified under FSC 5970, Electrical Insulators and Insulating Materials. Status: active.
NSN 5970-01-277-6491 has 1 manufacturer part number on file: 4M268-84-1 (The Boeing Company Div Defense).
Key specifications for 4M268-84-1: Overall Height: 0.055 INCHES MINIMUM AND 0.069 INCHES MAXIMUM IN; First Hole Diameter: 0.250 INCHES MINIMUM AND 0.256 INCHES MAXIMUM IN; Style Designator: FLAT, RECTANGULAR; Material Document and Classification: ALUMINUM ALLOY,ALCLAD 2024-T81 OR 2024-T72 SHEET,QQ-A-250/5 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 6 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.