The Heat Sink,electrical-Electronic, cataloged under National Stock Number 5999-01-212-1101, 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 20 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5999-01-212-1101 |
| Primary Part Number | 635-1.25B2 |
| Item Name | Heat Sink,electrical-Electronic |
| FSC / FSG | 5999 / 59 — No Item Name Available |
| Manufacturer | Eg and G Wakefield Engineering |
| Status | CANCELLED |
| Overall Diameter | 0.500 INCHES NOMINAL IN |
| Test Data Document | 81349-MIL-H-87111 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.). |
| Nuclear Hardness Critical Feature | HARDENED |
| Material Document and Classification | QQ-C-533 FED SPEC SINGLE MATERIAL RESPONSE OR MIL-C-81021 MIL SPEC SINGLE MATERIAL RESPONSE |
| Unthreaded Mounting Hole Diameter | 0.318 INCHES NOMINAL SECOND MOUNTING FACILITY IN |
| Surface Treatment Document and Classification | MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE |
| Surface Treatment | ANODIZE |
| Specification/standard Data | 81349-MIL-H-87111/3 GOVERNMENT SPECIFICATION |
| Material | COPPER ALLOY |
| Mounting Facility Type and Quantity | 1 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY |
| Overall Diameter | 0.500 INCHES NOMINAL IN |
| Test Data Document | 81349-MIL-H-87111 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.). |
| Nuclear Hardness Critical Feature | HARDENED |
| Material Document and Classification | QQ-C-533 FED SPEC SINGLE MATERIAL RESPONSE OR MIL-C-81021 MIL SPEC SINGLE MATERIAL RESPONSE |
| Unthreaded Mounting Hole Diameter | 0.318 INCHES NOMINAL SECOND MOUNTING FACILITY IN |
| Surface Treatment Document and Classification | MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE |
| Surface Treatment | ANODIZE |
| Specification/standard Data | 81349-MIL-H-87111/3 GOVERNMENT SPECIFICATION |
| Material | COPPER ALLOY |
| Mounting Facility Type and Quantity | 1 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY |
| Acquisition Status | CANCELLED |
| Successor | 5999-01-360-1469 (KLG365D) |
| HAZMAT | No |
| Shelf Life Code | 0 |
| Criticality Code | Q |
| Unit of Issue | EA |
| SMR Code | ZN |
| Weight | 0.0100 lbs |
| Cube | 0.0001 cu ft |
| Part Number | Manufacturer |
|---|---|
| 635-1.25B2 | Eg and G Wakefield Engineering (USA) |
| 1438M42P01 | General Electric Co (USA) |
| 10139607 | Nimikkeistokeskus Ncb Finland (FIN) |
| MODEL 444 | Aham Plastics (USA) |
| M87111/03-1A16 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| MIL-H-87111/3 | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| 5016B | Aavid Thermalloy Llc (USA) |
| SG00-0635 | Raven Electronics Corp (USA) |
| MODEL 316-B | Aham Plastics (USA) |
NSN 5999-01-212-1101 is a Heat Sink,electrical-Electronic, manufactured by Eg and G Wakefield Engineering, classified under FSC 5999 (No Item Name Available). Status: cancelled.
NSN 5999-01-212-1101 has 9 cross-referenced part numbers: 635-1.25B2 (Eg and G Wakefield Engineering), 1438M42P01 (General Electric Co), 10139607 (Nimikkeistokeskus Ncb Finland), MODEL 444 (Aham Plastics), M87111/03-1A16 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 4 more.
There are 12 known substitutes for 5999-01-212-1101: 5999-01-091-4821, 5999-01-360-1469, 5999-01-089-1006 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 635-1.25B2: Overall Height: 0.250 INCHES NOMINAL IN; Overall Diameter: 0.500 INCHES NOMINAL IN; Special Features: NUCLEAR HARDNESS CRITICAL ITEMS; Test Data Document: 81349-MIL-H-87111 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.).. 24 total characteristics are documented in the Federal Logistics Information System.
NSN 5999-01-212-1101 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.