PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

PA1-21Heat Sink,electrical-Electronic

Cts Electronic Components (california) Inc Dba Ierc Div Cts Electronic Components · NSN 5999-00-007-0660 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-007-0660 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-007-0660. Primary manufacturer part number: PA1-21.
Features
  • Heat Sink,electrical-Electronic — FSC 5999
  • 3 verified cross-references
  • Primary manufacturer: Cts Electronic Components (california) Inc Dba Ierc Div Cts Electronic Components
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 5999-00-007-0660, 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 Cts Electronic Components (california) Inc Dba Ierc Div Cts Electronic Components. 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
NSN5999-00-007-0660
Primary Part NumberPA1-21
Item NameHeat Sink,electrical-Electronic
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerCts Electronic Components (california) Inc Dba Ierc Div Cts Electronic Components
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeJ
Verified Substitutes 3
3110-00-375-91463185532 INTERCHANGEABLE
Bearing,ball,annular
Borgwarner Pds (anderson), L.l.c.
3110-00-555-539939FF-1V1 INTERCHANGEABLE
Bearing,ball,annular
Schatz Bearing Corporation Dba Schatz Bearing Corp
6220-01-283-39632602502 INTERCHANGEABLE
Light,indicator
W S Darley & Co
Cross-Reference Index
Part NumberManufacturer
3185532 Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) (USA)
3185532 Allied-Signal Inc Dba Allied-Signal Aerospace Co Electrodynamics Div (USA)
PA1-21 PRIMARY Cts Electronic Components (california) Inc Dba Ierc Div Cts Electronic Components (USA)
Related Parts
3110-00-375-9146INTERCHANGEABLE
BEARING,BALL,ANNULAR
3185532
3110-00-555-5399INTERCHANGEABLE
BEARING,BALL,ANNULAR
39FF-1V1
6220-01-283-3963INTERCHANGEABLE
LIGHT,INDICATOR
2602502

Frequently Asked Questions

What is NSN 5999-00-007-0660?

NSN 5999-00-007-0660 is a Heat Sink,electrical-Electronic, manufactured by Cts Electronic Components (california) Inc Dba Ierc Div Cts Electronic Components, classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-00-007-0660?

NSN 5999-00-007-0660 has 3 cross-referenced part numbers: 3185532 (Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road)), 3185532 (Allied-Signal Inc Dba Allied-Signal Aerospace Co Electrodynamics Div), PA1-21 (Cts Electronic Components (california) Inc Dba Ierc Div Cts Electronic Components).

What NSN replaces 5999-00-007-0660?

There are 3 known substitutes for 5999-00-007-0660: 3110-00-375-9146, 3110-00-555-5399, 6220-01-283-3963. Verify interchangeability with system specifications before substitution.

What are the specifications of PA1-21?

Key specifications for PA1-21: Special Features: ALUMINUM ALLOY,BLACK INSULUBE; 3.670 IN. LG; 1.000 IN. W; 0.530 IN. H; FOUR 0.174 IN. DIA THRU HOLES AND FOUR 0.120 IN. DIA THRU HOLES IRREGULARLY SPACED IN; Special Features: ALUMINUM ALLOY,BLACK INSULUBE; 3.670 IN. LG; 1.000 IN. W; 0.530 IN. H; FOUR 0.174 IN. DIA THRU HOLES AND FOUR 0.120 IN. DIA THRU HOLES IRREGULARLY SPACED IN. 2 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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