PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

S5-3Heater,thermal Release

Joslyn Clark Controls, Llc · NSN 5999-00-709-7891 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-709-7891 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-709-7891. Primary manufacturer part number: S5-3.
Features
  • Heater,thermal Release — FSC 5999
  • 2 verified cross-references
  • Primary manufacturer: Joslyn Clark Controls, Llc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Heater,thermal Release, cataloged under National Stock Number 5999-00-709-7891, 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 Joslyn Clark Controls, Llc. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Catalog Facts
Item NameHeater,thermal Release
FSC / FSG5999 — No Item Name Available (FSG 59)
ManufacturersJoslyn Clark Controls, Llc (CAGE 61809); Challenger Electrical Equipment Corp Industrial Products Operation (CAGE 65788)
Successor NSN6625-00-354-9709 — Plug-in Unit,electrical-Electron
Technical Specifications
ParameterValue
NSN5999-00-709-7891
Primary Part NumberS5-3
Item NameHeater,thermal Release
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerJoslyn Clark Controls, Llc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
Successor6625-00-354-9709 (S53)
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeY
Verified Substitutes 8
6625-00-354-9709S53 SUCCESSOR
Plug-in Unit,electrical-Electron
Tektronix, Inc.
6240-00-143-317235-502 INTERCHANGEABLE
Lamp,incandescent
Bae Systems Information and Electronic Systems Integration Inc.
6250-00-283-93834077 INTERCHANGEABLE
Lampholder
Westinghouse Electric Corp
5340-00-826-9333S53 INTERCHANGEABLE
Plunger,quick Release
Hutchinson Aerospace & Industry, Inc. Dba Vlier Div Vlier
6680-00-857-23976680-00-857-2397 INTERCHANGEABLE
Indicator,sight,liquid
Aiw-Alton Inc
6680-00-887-4449S53H INTERCHANGEABLE
Indicator,sight,liquid
Eaton Aerospace Llc Div Fluid and Electrical Distribution Division
5985-01-180-7412723113-1 INTERCHANGEABLE
Switch,radio Frequency Transmiss
Raytheon Company Div Rmd Strategic
6605-01-438-3988S-53 INTERCHANGEABLE
Compass,magnetic,mounted
Ritchie E S and Sons Inc
Cross-Reference Index
Part NumberManufacturer
S5-3 Joslyn Clark Controls, Llc (USA)
S5-3 Challenger Electrical Equipment Corp Industrial Products Operation (USA)
Related Parts
SUCCESSOR 6625-00-354-9709 Plug-in Unit,electrical-Electron · S53
6240-00-143-3172INTERCHANGEABLE
LAMP,INCANDESCENT
35-502
6250-00-283-9383INTERCHANGEABLE
LAMPHOLDER
4077
5340-00-826-9333INTERCHANGEABLE
PLUNGER,QUICK RELEASE
S53
6680-00-857-2397INTERCHANGEABLE
INDICATOR,SIGHT,LIQUID
6680-00-857-2397
6680-00-887-4449INTERCHANGEABLE
INDICATOR,SIGHT,LIQUID
S53H
5985-01-180-7412INTERCHANGEABLE
SWITCH,RADIO FREQUENCY TRANSMISS
723113-1
6605-01-438-3988INTERCHANGEABLE
COMPASS,MAGNETIC,MOUNTED
S-53

Frequently Asked Questions

What is NSN 5999-00-709-7891?

NSN 5999-00-709-7891 is a Heater,thermal Release, manufactured by Joslyn Clark Controls, Llc, classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-00-709-7891?

NSN 5999-00-709-7891 has 2 cross-referenced part numbers: S5-3 (Joslyn Clark Controls, Llc), S5-3 (Challenger Electrical Equipment Corp Industrial Products Operation).

What NSN replaces 5999-00-709-7891?

There are 8 known substitutes for 5999-00-709-7891: 6625-00-354-9709, 6240-00-143-3172, 6250-00-283-9383 and 5 more. Verify interchangeability with system specifications before substitution.

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