The Insulation Sleeving,electrical, cataloged under National Stock Number 5970-01-421-5899, 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 9 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5970-01-421-5899 |
| Primary Part Number | FLXT-ETW-30-4 |
| Item Name | Insulation Sleeving,electrical |
| FSC / FSG | 5970 / 59 — Electrical Insulators and Insulating Materials |
| Manufacturer | Markel Corp. |
| Status | ACTIVE |
| Temp Rating | -70.0 CELSIUS AND 260.0 CELSIUS DEGC |
| Dielectric Withstanding Voltage in Volts | 9000.0 |
| Style Designator | NONSHRINKABLE |
| Flexibility | FLEXIBLE |
| Wall Thickness | 0.004 INCHES MINIMUM AND 0.008 INCHES MAXIMUM IN |
| Inside Diameter | 0.010 INCHES MINIMUM AND 0.015 INCHES MAXIMUM IN |
| Reliability Indicator | NOT ESTABLISHED |
| Color | YELLOW |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE |
| 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 |
|---|---|
| FLXT-ETW-30-4 PRIMARY | Markel Corp. (USA) |
| 30 LWTFEYELLOW PRIMARY | Zeus Industrial Products, Inc (USA) |
| Reference | Meaning |
|---|---|
| 153C6393P304 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5970-01-421-5899 is a Insulation Sleeving,electrical, manufactured by Markel Corp., classified under FSC 5970, Electrical Insulators and Insulating Materials. Status: active.
NSN 5970-01-421-5899 has 2 manufacturer part numbers on file: FLXT-ETW-30-4 (Markel Corp.), 30 LWTFEYELLOW (Zeus Industrial Products, Inc).
Key specifications for FLXT-ETW-30-4: Temp Rating: -70.0 CELSIUS AND 260.0 CELSIUS DEGC; Dielectric Withstanding Voltage in Volts: 9000.0; Style Designator: NONSHRINKABLE; Flexibility: FLEXIBLE. 9 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.