The Heatpad, cataloged under National Stock Number 4520-01-587-2106, is classified within Federal Supply Class 4520 (Space and Water Heating Equipment) of the Plumbing, Heating, and Waste Disposal group. The manufacturer of record is Henkel Corporation. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4520-01-587-2106 |
| Primary Part Number | K4-58 |
| Item Name | Heatpad |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Henkel Corporation |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| K4-58 PRIMARY | Henkel Corporation (USA) |
| Reference | Meaning |
|---|---|
| K4-58 | 5/9 Secondary reference Berquist Company, the Dba Design Mark |
NSN 4520-01-587-2106 is a Heatpad, manufactured by Henkel Corporation, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-587-2106 has 1 manufacturer part number on file: K4-58 (Henkel Corporation).
Key specifications for K4-58: Special Features: SIL-PAD K-4 USES SPECIALLY DEVELOPED FILM WHICH HAS HIGH THERMAL CONDUCTIVITY, HIGH DIELECTRIC STRENGTH AND IS VERY DURABLE. SIL-PAD K-4 COMBINES THE THERMAL TRANSFER PROPERTIES OF WELL-KNOWN SIL-PAD RUBBER WITH THE PHYSICAL PROPERTIES OF A FILM; SIL-PAD K-4 IS A DURABLE INSULATOR THAT WITH-STANDS HIGH VOLTAGES AND REQUIRES NO THERMAL GREASE TO TRANSFER HEAT; AVAILABLE IN CUSTOMIZED SHAPES AND SIZES; Part Name Assigned by Controlling Agency: SIL-PAD; End Item Identification: RECORDING SUBSTAION, SDVMK8 MOD 1. 0 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.