The Heat Sink-Insulator, cataloged under National Stock Number 5999-01-352-3265, 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 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple. Government technical data includes 5 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. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5999-01-352-3265 |
| Primary Part Number | 034-003361-066 |
| Item Name | Heat Sink-Insulator |
| FSC / FSG | 5999 / 59 — Miscellaneous Electrical and Electronic Components |
| Manufacturer | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 2 UNTHREADED HOLE(S) SECOND MOUNTING FACILITY |
| Mounting Facility Type and Quantity | 2 UNTHREADED HOLE(S) FIRST MOUNTING FACILITY |
| Unthreaded Mounting Hole Diameter | 0.020 INCHES MINIMUM AND 0.030 INCHES MAXIMUM FIRST MOUNTING FACILITY IN |
| Unthreaded Mounting Hole Diameter | 0.088 INCHES MINIMUM AND 0.098 INCHES MAXIMUM SECOND MOUNTING FACILITY IN |
| Material | GLASS FIBER AND RUBBER SILICONE CLASS Q |
| 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 | J |
| Part Number | Manufacturer |
|---|---|
| 034-003361-066 PRIMARY | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple (USA) |
| ECF561E312X1-000X005 | Henkel Us Operations Corporation Dba Henkel-Manco, Inc (USA) |
NSN 5999-01-352-3265 is a Heat Sink-Insulator, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple, classified under FSC 5999, Miscellaneous Electrical and Electronic Components. Status: active.
NSN 5999-01-352-3265 has 2 manufacturer part numbers on file: 034-003361-066 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple), ECF561E312X1-000X005 (Henkel Us Operations Corporation Dba Henkel-Manco, Inc).
Key specifications for 034-003361-066: Mounting Facility Type and Quantity: 2 UNTHREADED HOLE(S) SECOND MOUNTING FACILITY; Mounting Facility Type and Quantity: 2 UNTHREADED HOLE(S) FIRST MOUNTING FACILITY; Unthreaded Mounting Hole Diameter: 0.020 INCHES MINIMUM AND 0.030 INCHES MAXIMUM FIRST MOUNTING FACILITY IN; Unthreaded Mounting Hole Diameter: 0.088 INCHES MINIMUM AND 0.098 INCHES MAXIMUM SECOND MOUNTING FACILITY IN. 5 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.