The Heat Sink,electrical-Electronic, cataloged under National Stock Number 5999-01-204-3731, 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 Eg and G Wakefield Engineering. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5999-01-204-3731 |
| Primary Part Number | M87111/01-426 |
| Item Name | Heat Sink,electrical-Electronic |
| FSC / FSG | 5999 / 59 — No Item Name Available |
| Manufacturer | Eg and G Wakefield Engineering |
| Status | ACTIVE |
| Overall Diameter | 0.470 INCHES NOMINAL IN |
| Specification/standard Data | 81349-MIL-H-87111/1 GOVERNMENT SPECIFICATION |
| Test Data Document | 81349-MIL-H-8711 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
| Unthreaded Mounting Hole Diameter | 0.235 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Mounting Facility Type and Quantity | 1 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY |
| Material | BERYLLIUM OXIDE |
| Overall Diameter | 0.470 INCHES NOMINAL IN |
| Specification/standard Data | 81349-MIL-H-87111/1 GOVERNMENT SPECIFICATION |
| Test Data Document | 81349-MIL-H-8711 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
| Unthreaded Mounting Hole Diameter | 0.235 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Mounting Facility Type and Quantity | 1 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY |
| Material | BERYLLIUM OXIDE |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Shelf Life Code | 0 |
| Criticality Code | Q |
| Unit of Issue | EA |
| SMR Code | JN |
| Part Number | Manufacturer |
|---|---|
| M87111/01-426 | Eg and G Wakefield Engineering (USA) |
| M87111/01-4Y26 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| MIL-H-87111/1 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| MIL-H-87111 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
NSN 5999-01-204-3731 is a Heat Sink,electrical-Electronic, manufactured by Eg and G Wakefield Engineering, classified under FSC 5999 (No Item Name Available). Status: active.
NSN 5999-01-204-3731 has 4 cross-referenced part numbers: M87111/01-426 (Eg and G Wakefield Engineering), M87111/01-4Y26 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-H-87111/1 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-H-87111 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).
There are 12 known substitutes for 5999-01-204-3731: 5999-01-395-2474, 5999-01-202-9721, 5999-01-202-9726 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for M87111/01-426: Overall Diameter: 0.470 INCHES NOMINAL IN; Specification/standard Data: 81349-MIL-H-87111/1 GOVERNMENT SPECIFICATION; Overall Height: 0.040 INCHES NOMINAL IN; Test Data Document: 81349-MIL-H-8711 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).. 14 total characteristics are documented in the Federal Logistics Information System.