PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

579R956H01Heat Sink,electrical-Electronic

Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp · NSN 5999-00-131-1105 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-131-1105 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-131-1105. Primary manufacturer part number: 579R956H01.
Features
  • Heat Sink,electrical-Electronic — FSC 5999
  • Thread Class: 2B ALL MOUNTING FACILITIES
  • Material: ALUMINUM ALLOY 6061 OR ALUMINUM ALLOY 6062 OR ALUMINUM ALLOY 6063
  • Material Document and Classification: QQ-A-200/9 FED SPEC 2ND MATERIAL RESPONSE OR QQ-A-200/8 FED SPEC 3RD MATERIAL RESPONSE
  • Nominal Thread Size: 0.138 INCHES ALL MOUNTING FACILITIES IN
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) ALL MOUNTING FACILITIES
  • Surface Treatment Document and Classification: MIL-A-8625,TYPE 2 MIL SPEC SINGLE TREATMENT RESPONSE
  • Surface Treatment: ANODIZE
Applications
  • Applications requiring Aluminum Alloy 6061 or Aluminum Alloy 6062 or Aluminum Alloy 6063 construction
General Description

The Heat Sink,electrical-Electronic, cataloged under National Stock Number 5999-00-131-1105, 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 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-00-131-1105
Primary Part Number579R956H01
Item NameHeat Sink,electrical-Electronic
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerNorthrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
StatusACTIVE
Thread Class2B ALL MOUNTING FACILITIES
MaterialALUMINUM ALLOY 6061 OR ALUMINUM ALLOY 6062 OR ALUMINUM ALLOY 6063
Material Document and ClassificationQQ-A-200/9 FED SPEC 2ND MATERIAL RESPONSE OR QQ-A-200/8 FED SPEC 3RD MATERIAL RESPONSE
Nominal Thread Size0.138 INCHES ALL MOUNTING FACILITIES IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) ALL MOUNTING FACILITIES
Surface Treatment Document and ClassificationMIL-A-8625,TYPE 2 MIL SPEC SINGLE TREATMENT RESPONSE
Surface TreatmentANODIZE
Mounting Facility Type and Quantity2 THREADED HOLE(S) ALL MOUNTING FACILITIES
Thread Class2B ALL MOUNTING FACILITIES
MaterialALUMINUM ALLOY 6061 OR ALUMINUM ALLOY 6062 OR ALUMINUM ALLOY 6063
Material Document and ClassificationQQ-A-200/9 FED SPEC 2ND MATERIAL RESPONSE OR QQ-A-200/8 FED SPEC 3RD MATERIAL RESPONSE
Nominal Thread Size0.138 INCHES ALL MOUNTING FACILITIES IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) ALL MOUNTING FACILITIES
Surface Treatment Document and ClassificationMIL-A-8625,TYPE 2 MIL SPEC SINGLE TREATMENT RESPONSE
Surface TreatmentANODIZE
Mounting Facility Type and Quantity2 THREADED HOLE(S) ALL MOUNTING FACILITIES
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeJ
Weight2.0000 lbs
Cube0.0046 cu ft
Verified Substitutes 3
6240-00-299-5546F8T5 INTERCHANGEABLE
Lamp,fluorescent
Pauluhn Electric Manufacturing, Llp Dba Pauluhn Electric
8030-00-891-835860941 INTERCHANGEABLE
Sealing Compound
Henkel Loctite Corp
1240-01-627-077060-941 INTERCHANGEABLE
Telescope,articulated
Edmund Optics, Inc
Cross-Reference Index
Part NumberManufacturer
6094-1 Vemaline Products Inc Dba Handles Unlimited Div Handles Unlimited (USA)
579R956H01 PRIMARY Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA)
A3031H01 Eg and G Wakefield Engineering (USA)
Related Parts
6240-00-299-5546INTERCHANGEABLE
LAMP,FLUORESCENT
F8T5
8030-00-891-8358INTERCHANGEABLE
SEALING COMPOUND
60941
1240-01-627-0770INTERCHANGEABLE
TELESCOPE,ARTICULATED
60-941

Frequently Asked Questions

What is NSN 5999-00-131-1105?

NSN 5999-00-131-1105 is a Heat Sink,electrical-Electronic, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp, classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-00-131-1105?

NSN 5999-00-131-1105 has 3 cross-referenced part numbers: 6094-1 (Vemaline Products Inc Dba Handles Unlimited Div Handles Unlimited), 579R956H01 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp), A3031H01 (Eg and G Wakefield Engineering).

What NSN replaces 5999-00-131-1105?

There are 3 known substitutes for 5999-00-131-1105: 6240-00-299-5546, 8030-00-891-8358, 1240-01-627-0770. Verify interchangeability with system specifications before substitution.

What are the specifications of 579R956H01?

Key specifications for 579R956H01: Thread Class: 2B ALL MOUNTING FACILITIES; Overall Length: 1.440 INCHES NOMINAL IN; Material: ALUMINUM ALLOY 6061 OR ALUMINUM ALLOY 6062 OR ALUMINUM ALLOY 6063; Material Document and Classification: QQ-A-200/9 FED SPEC 2ND MATERIAL RESPONSE OR QQ-A-200/8 FED SPEC 3RD MATERIAL RESPONSE. 22 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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