The Heat Sink-Insulator, cataloged under National Stock Number 5999-01-508-8446, is classified within Federal Supply Class 5999 (Miscellaneous Electrical and Electronic Components) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Apex Microtechnology Corporation Dba Apex Microtechnology Corp Div Apex Microtechnology, Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5999-01-508-8446 |
| Primary Part Number | TW03 |
| Item Name | Heat Sink-Insulator |
| FSC / FSG | 5999 / 59 — Miscellaneous Electrical and Electronic Components |
| Manufacturer | Apex Microtechnology Corporation Dba Apex Microtechnology Corp Div Apex Microtechnology, Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Shelf Life Code | 0 |
| Criticality Code | X |
| Unit of Issue | EA |
| Acquisition advice code | JN |
| Part Number | Manufacturer |
|---|---|
| TW03 PRIMARY | Apex Microtechnology Corporation Dba Apex Microtechnology Corp Div Apex Microtechnology, Inc (USA) |
NSN 5999-01-508-8446 is a Heat Sink-Insulator, manufactured by Apex Microtechnology Corporation Dba Apex Microtechnology Corp Div Apex Microtechnology, Inc, classified under FSC 5999, Miscellaneous Electrical and Electronic Components. Status: active.
NSN 5999-01-508-8446 has 1 manufacturer part number on file: TW03 (Apex Microtechnology Corporation Dba Apex Microtechnology Corp Div Apex Microtechnology, Inc).
Key specifications for TW03: Overall Length: 1.550 INCHES NOMINAL IN; Overall Width: 1.050 INCHES NOMINAL IN; Special Features: THERMAL WASHER FOR 8-PIN T0-3 PACKAGE. DO NOT STORE WASHERS ABOVE 45 DEGRESS CENTIGRADE. 0 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.