PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

401Heat Sink,electrical-Electronic

Aham-Tor Inc Dba Ati · NSN 5999-01-345-8557 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-01-345-8557 — this item is cataloged by the U.S. Government under National Stock Number 5999-01-345-8557. Primary manufacturer part number: 401.
Features
  • Heat Sink,electrical-Electronic — FSC 5999
  • Body Style: BOARD MOUNTED
  • Body Style: BOARD MOUNTED
  • 1 verified cross-reference
  • Primary manufacturer: Aham-Tor Inc Dba Ati
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Heat Sink,electrical-Electronic, cataloged under National Stock Number 5999-01-345-8557, 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 Aham-Tor Inc Dba Ati. Government technical data includes 2 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.

Technical Specifications
ParameterValue
NSN5999-01-345-8557
Primary Part Number401
Item NameHeat Sink,electrical-Electronic
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerAham-Tor Inc Dba Ati
StatusACTIVE
Body StyleBOARD MOUNTED
Body StyleBOARD MOUNTED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
6625-00-188-3891 INTERCHANGEABLE
Generator,signal
6625-01-045-6125501 INTERCHANGEABLE
Test Set,insulation Breakdown
Simpson Electric Company, Inc.
5895-01-367-4962 INTERCHANGEABLE
Mixer Stage,frequency
Cross-Reference Index
Part NumberManufacturer
401 Aham-Tor Inc Dba Ati
Related Parts
6625-00-188-3891INTERCHANGEABLE
GENERATOR,SIGNAL
6625-01-045-6125INTERCHANGEABLE
TEST SET,INSULATION BREAKDOWN
501
5895-01-367-4962INTERCHANGEABLE
MIXER STAGE,FREQUENCY

Frequently Asked Questions

What is NSN 5999-01-345-8557?

NSN 5999-01-345-8557 is a Heat Sink,electrical-Electronic, manufactured by Aham-Tor Inc Dba Ati, classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-01-345-8557?

NSN 5999-01-345-8557 has 1 cross-referenced part number: 401 (Aham-Tor Inc Dba Ati).

What NSN replaces 5999-01-345-8557?

There are 3 known substitutes for 5999-01-345-8557: 6625-00-188-3891, 6625-01-045-6125, 5895-01-367-4962. Verify interchangeability with system specifications before substitution.

What are the specifications of 401?

Key specifications for 401: Overall Height: 0.500 INCHES NOMINAL IN; Overall Width: 1.780 INCHES NOMINAL IN; Overall Length: 1.780 INCHES NOMINAL IN; Body Style: BOARD MOUNTED. 8 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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