The Heat Sink-Insulator, cataloged under National Stock Number 5999-01-357-5796, 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 Crane Electronics, Inc.. Government technical data includes 3 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 | 5999-01-357-5796 |
| Primary Part Number | 77A0642-5 |
| Item Name | Heat Sink-Insulator |
| FSC / FSG | 5999 / 59 — Miscellaneous Electrical and Electronic Components |
| Manufacturer | Crane Electronics, Inc. |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 2 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY |
| Unthreaded Mounting Hole Diameter | 0.187 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Material | 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 | JN |
| Part Number | Manufacturer |
|---|---|
| 69-11-B998-1671 | Parker-Hannifin Corporation Dba Pneutronics Div Chomerics Division (USA) |
| 77A0642-5 PRIMARY | Crane Electronics, Inc. (USA) |
NSN 5999-01-357-5796 is a Heat Sink-Insulator, manufactured by Crane Electronics, Inc., classified under FSC 5999, Miscellaneous Electrical and Electronic Components. Status: active.
NSN 5999-01-357-5796 has 2 manufacturer part numbers on file: 69-11-B998-1671 (Parker-Hannifin Corporation Dba Pneutronics Div Chomerics Division), 77A0642-5 (Crane Electronics, Inc.).
Key specifications for 77A0642-5: Mounting Facility Type and Quantity: 2 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY; Overall Height: 0.015 INCHES NOMINAL0.015 INCHES NOMINAL IN; Unthreaded Mounting Hole Diameter: 0.187 INCHES NOMINAL SINGLE MOUNTING FACILITY IN; Overall Length: 2.250 INCHES NOMINAL2.250 INCHES NOMINAL IN. 3 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.