PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

PC1-1BHeat Sink,electrical-Electronic

Cts Electronic Components (california) Inc Dba Ierc Div Cts Electronic Components · NSN 5999-01-378-2400 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-01-378-2400 — this item is cataloged by the U.S. Government under National Stock Number 5999-01-378-2400. Primary manufacturer part number: PC1-1B.
Features
  • Heat Sink,electrical-Electronic — FSC 5999
  • Body Style: HORIZONTALLY MOUNTED
  • Mounting Facility Type and Quantity: 1 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
  • Specification/standard Data: 98978-PC1-1B MANUFACTURERS SPECIFICATION CONTROL
  • Unthreaded Mounting Hole Diameter: 0.150 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
  • Body Style: HORIZONTALLY MOUNTED
  • Mounting Facility Type and Quantity: 1 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
  • Specification/standard Data: 98978-PC1-1B MANUFACTURERS SPECIFICATION CONTROL
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 5999-01-378-2400, 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. 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-01-378-2400
Primary Part NumberPC1-1B
Item NameHeat Sink,electrical-Electronic
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerCts Electronic Components (california) Inc Dba Ierc Div Cts Electronic Components
StatusACTIVE
Body StyleHORIZONTALLY MOUNTED
Mounting Facility Type and Quantity1 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
Specification/standard Data98978-PC1-1B MANUFACTURERS SPECIFICATION CONTROL
Unthreaded Mounting Hole Diameter0.150 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Body StyleHORIZONTALLY MOUNTED
Mounting Facility Type and Quantity1 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
Specification/standard Data98978-PC1-1B MANUFACTURERS SPECIFICATION CONTROL
Unthreaded Mounting Hole Diameter0.150 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality CodeN
Unit of IssueEA
SMR CodeJN
Verified Substitutes 1
5930-01-235-9745PC11B INTERCHANGEABLE
Switch,pressure
Automatic Switch Company Dba Asco
Cross-Reference Index
Part NumberManufacturer
PC1-1B PRIMARY Cts Electronic Components (california) Inc Dba Ierc Div Cts Electronic Components (USA)
Related Parts
5930-01-235-9745INTERCHANGEABLE
SWITCH,PRESSURE
PC11B

Frequently Asked Questions

What is NSN 5999-01-378-2400?

NSN 5999-01-378-2400 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 5999-01-378-2400?

NSN 5999-01-378-2400 has 1 cross-referenced part number: PC1-1B (Cts Electronic Components (california) Inc Dba Ierc Div Cts Electronic Components).

What NSN replaces 5999-01-378-2400?

There is 1 known substitute for 5999-01-378-2400: 5930-01-235-9745. Verify interchangeability with system specifications before substitution.

What are the specifications of PC1-1B?

Key specifications for PC1-1B: Body Style: HORIZONTALLY MOUNTED; Mounting Facility Type and Quantity: 1 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY; Specification/standard Data: 98978-PC1-1B MANUFACTURERS SPECIFICATION CONTROL; Overall Height: 0.300 INCHES NOMINAL IN. 14 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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