# NSN 4520-01-587-2106: Heatpad

NSN 4520-01-587-2106 (also written 4520015872106; NIIN 01-587-2106) is a heatpad in Federal Supply Class 4520, Space and Water Heating Equipment. 2 manufacturer part numbers from 2 suppliers are on record. No purchases are on record yet.

## Identification

- NSN: 4520-01-587-2106 (4520015872106)
- NIIN: 01-587-2106 (015872106)
- Item name: HEATPAD
- Federal Supply Class: [FSC 4520 Space and Water Heating Equipment](https://nsnexplorer.com/fsc/4520/)
- Federal Supply Group: [FSG 45](https://nsnexplorer.com/group/45/)
- Acquisition method suffix code: AMSC D: the data needed to compete the part is unavailable or cannot be obtained economically. (observed 2026-10-10)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AGAV | END ITEM IDENTIFICATION | RECORDING SUBSTAION, SDVMK8 MOD 1 |
| CXCY | PART NAME ASSIGNED BY CONTROLLING AGENCY | SIL-PAD |
| FEAT | 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 numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| K4-58 | 379E8 | BERQUIST COMPANY, THE DBA DESIGN MARK | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| K4-58 | 55285 | HENKEL CORPORATION | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=4520015872106&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=4520015872106
- AMSC record: https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/
- All data is public U.S. government data; every row above links to its source record where one exists.

Canonical page: https://nsnexplorer.com/nsn/4520-01-587-2106/
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