The Heat Sink,electrical-Electronic, cataloged under National Stock Number 5999-01-189-5263, is classified within Federal Supply Class 5999 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Carlisle & Finch Co. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5999-01-189-5263 |
| Primary Part Number | 4903 |
| Item Name | Heat Sink,electrical-Electronic |
| FSC / FSG | 5999 / 59 — No Item Name Available |
| Manufacturer | Carlisle & Finch Co |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 4 UNTHREADED HOLE(S) FIRST MOUNTING FACILITY |
| Material | COPPER ALLOY |
| Unthreaded Mounting Hole Diameter | 0.375 INCHES NOMINAL SECOND MOUNTING FACILITY IN |
| Mounting Facility Type and Quantity | 3 UNTHREADED HOLE(S) THIRD MOUNTING FACILITY |
| Surface Treatment | NICKEL |
| Unthreaded Mounting Hole Diameter | 0.266 INCHES NOMINAL FIRST MOUNTING FACILITY IN |
| Mounting Facility Type and Quantity | 1 UNTHREADED HOLE(S) SECOND MOUNTING FACILITY |
| Unthreaded Mounting Hole Diameter | 0.500 INCHES NOMINAL THIRD MOUNTING FACILITY IN |
| Mounting Facility Type and Quantity | 4 UNTHREADED HOLE(S) FIRST MOUNTING FACILITY |
| Material | COPPER ALLOY |
| Unthreaded Mounting Hole Diameter | 0.375 INCHES NOMINAL SECOND MOUNTING FACILITY IN |
| Mounting Facility Type and Quantity | 3 UNTHREADED HOLE(S) THIRD MOUNTING FACILITY |
| Surface Treatment | NICKEL |
| Unthreaded Mounting Hole Diameter | 0.266 INCHES NOMINAL FIRST MOUNTING FACILITY IN |
| Mounting Facility Type and Quantity | 1 UNTHREADED HOLE(S) SECOND MOUNTING FACILITY |
| Unthreaded Mounting Hole Diameter | 0.500 INCHES NOMINAL THIRD MOUNTING FACILITY IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Shelf Life Code | 0 |
| Unit of Issue | EA |
| SMR Code | J |
| Part Number | Manufacturer |
|---|---|
| 4903 PRIMARY | Carlisle & Finch Co (USA) |
NSN 5999-01-189-5263 is a Heat Sink,electrical-Electronic, manufactured by Carlisle & Finch Co, classified under FSC 5999 (No Item Name Available). Status: active.
NSN 5999-01-189-5263 has 1 cross-referenced part number: 4903 (Carlisle & Finch Co).
There are 11 known substitutes for 5999-01-189-5263: 5340-00-084-3456, 3455-00-222-3790, 6625-00-239-4242 and 8 more. Verify interchangeability with system specifications before substitution.
Key specifications for 4903: Overall Length: 4.000 INCHES NOMINAL IN; Overall Height: 0.062 INCHES NOMINAL IN; Overall Width: 4.000 INCHES NOMINAL IN; Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S) FIRST MOUNTING FACILITY. 22 total characteristics are documented in the Federal Logistics Information System.