PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

54-03-2Heat Sink-Insulator

Thermalloy Co Inc · NSN 5999-01-363-0758 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-01-363-0758 — this item is cataloged by the U.S. Government under National Stock Number 5999-01-363-0758. Primary manufacturer part number: 54-03-2.
Features
  • Heat Sink-Insulator — FSC 5999
  • Mounting Facility Type and Quantity: 2 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
  • Material: GLASS FIBER
  • Accommodated Device Mounting Hole Quantity: 2
  • Unthreaded Mounting Hole Diameter: 0.156 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
  • Mounting Facility Type and Quantity: 2 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
  • Material: GLASS FIBER
  • Accommodated Device Mounting Hole Quantity: 2
Applications
  • Applications requiring Glass Fiber construction
General Description

The Heat Sink-Insulator, cataloged under National Stock Number 5999-01-363-0758, 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 Thermalloy Co Inc. Government technical data includes 8 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-01-363-0758
Primary Part Number54-03-2
Item NameHeat Sink-Insulator
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerThermalloy Co Inc
StatusACTIVE
Mounting Facility Type and Quantity2 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
MaterialGLASS FIBER
Accommodated Device Mounting Hole Quantity2
Unthreaded Mounting Hole Diameter0.156 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Mounting Facility Type and Quantity2 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
MaterialGLASS FIBER
Accommodated Device Mounting Hole Quantity2
Unthreaded Mounting Hole Diameter0.156 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Lifecycle & Compliance
Acquisition StatusACTIVE
Successor5999-01-311-6227 (54-03-2)
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeJ
Verified Substitutes 3
5999-01-311-622754-03-2 SUCCESSOR
Heat Sink-Insulator
Accessories for Electronics Inc Dba Afe
5815-00-327-5142 INTERCHANGEABLE
Keytop,keyboard
5120-01-355-203615830 INTERCHANGEABLE
Hammer,hand
Vaughan & Bushnell Manufacturing Company
Cross-Reference Index
Part NumberManufacturer
54-03-2 Thermalloy Co Inc (USA)
Related Parts
SUCCESSOR 5999-01-311-6227 Heat Sink-Insulator · 54-03-2
5815-00-327-5142INTERCHANGEABLE
KEYTOP,KEYBOARD
5120-01-355-2036INTERCHANGEABLE
HAMMER,HAND
15830

Frequently Asked Questions

What is NSN 5999-01-363-0758?

NSN 5999-01-363-0758 is a Heat Sink-Insulator, manufactured by Thermalloy Co Inc, classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-01-363-0758?

NSN 5999-01-363-0758 has 1 cross-referenced part number: 54-03-2 (Thermalloy Co Inc).

What NSN replaces 5999-01-363-0758?

There are 3 known substitutes for 5999-01-363-0758: 5999-01-311-6227, 5815-00-327-5142, 5120-01-355-2036. Verify interchangeability with system specifications before substitution.

What are the specifications of 54-03-2?

Key specifications for 54-03-2: Mounting Facility Type and Quantity: 2 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY; Overall Length: 1.655 INCHES NOMINAL1.655 INCHES NOMINAL IN; Overall Width: 1.063 INCHES NOMINAL1.063 INCHES NOMINAL IN; Material: GLASS FIBER. 12 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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