The Insulation Sleeving,electrical, cataloged under National Stock Number 5970-01-522-8277, 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 Markel Corp.. Government technical data includes 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5970-01-522-8277 |
| Primary Part Number | 5021-15-04 |
| Item Name | Insulation Sleeving,electrical |
| FSC / FSG | 5970 / 59 — Electrical Insulators and Insulating Materials |
| Manufacturer | Markel Corp. |
| Status | ACTIVE |
| Temp Rating | -30.0 CELSIUS AND 70.0 CELSIUS DEGC |
| Expanded Inside Diameter | 0.067 INCHES NOMINAL IN |
| Design Form | FULL ROUND |
| Dielectric Withstanding Voltage in Volts | 800.0 |
| Supplementary Features | ADDITIONAL SOURCE OF CAGE 92194 P/N PVC-105-15-4 |
| Style Designator | SHRINKABLE |
| Flexibility | FLEXIBLE |
| Recovered Wall Thickness | 0.013 INCHES MINIMUM AND 0.019 INCHES MAXIMUM IN |
| Departure From Cited Document | AS MOD BY COLOR |
| Recovered Inside Diameter | 0.057 INCHES NOMINAL IN |
| Reliability Indicator | ESTABLISHED |
| Color | YELLOW |
| Environmental Protection | FLAME RESISTANT AND MILDEW RESISTANT AND WATER RESISTANT |
| Minimum Tensile Strength | 1800 POUNDS PER SQUARE INCH LBS |
| 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 |
|---|---|
| 5021-15-04 PRIMARY | Markel Corp. (USA) |
| Reference | Meaning |
|---|---|
| MIL-I-631 | 4/1 Identification reference U.S. Government activity |
NSN 5970-01-522-8277 is a Insulation Sleeving,electrical, manufactured by Markel Corp., classified under FSC 5970, Electrical Insulators and Insulating Materials. Status: active.
NSN 5970-01-522-8277 has 1 manufacturer part number on file: 5021-15-04 (Markel Corp.).
Key specifications for 5021-15-04: Temp Rating: -30.0 CELSIUS AND 70.0 CELSIUS DEGC; Expanded Inside Diameter: 0.067 INCHES NOMINAL IN; Design Form: FULL ROUND; Dielectric Withstanding Voltage in Volts: 800.0. 14 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.