PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B9Heater,thermal Release

Ward Leonard Ct Llc · NSN 5999-00-409-9274 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-409-9274 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-409-9274. Primary manufacturer part number: B9.
Features
  • Heater,thermal Release — FSC 5999
  • Mounting Hole Diameter: 0.188 INCHES NOMINAL IN
  • Mounting Facility Type and Quantity: 2 UNTHREADED HOLE(S)
  • Mounting Hole Diameter: 0.188 INCHES NOMINAL IN
  • Mounting Facility Type and Quantity: 2 UNTHREADED HOLE(S)
  • 1 verified cross-reference
  • Primary manufacturer: Ward Leonard Ct 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 5999-00-409-9274, 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 Ward Leonard Ct Llc. Government technical data includes 4 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-00-409-9274
Primary Part NumberB9
Item NameHeater,thermal Release
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerWard Leonard Ct Llc
StatusACTIVE
Mounting Hole Diameter0.188 INCHES NOMINAL IN
Mounting Facility Type and Quantity2 UNTHREADED HOLE(S)
Mounting Hole Diameter0.188 INCHES NOMINAL IN
Mounting Facility Type and Quantity2 UNTHREADED HOLE(S)
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeJ
Verified Substitutes 12
4310-00-006-9542B9 INTERCHANGEABLE
Crankcase,compresso
Gardner Denver Inc.
3110-00-100-314814136A INTERCHANGEABLE
Cone and Rollers,tapered Roller
Rbc Bearings Incorporated Div West Trenton Division
3110-00-155-624010702 INTERCHANGEABLE
Bearing,ball,annular
Hyster-Yale Group, Inc.
3110-00-155-9149 INTERCHANGEABLE
Bearing,ball,thrust
3110-00-155-9573056-2 INTERCHANGEABLE
Bearing,ball,annular
Lockheed Martin Corporation Div Rms - Mitchel Field
5930-00-296-6422697603 PIECE 6 INTERCHANGEABLE
Switch,push
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5355-00-433-4075B-9 INTERCHANGEABLE
Knob
Reid Supply Company
4140-00-540-1076 INTERCHANGEABLE
Fan,centrifugal
6920-00-542-2340B9 INTERCHANGEABLE
Center,target Repair
National Target Company, Inc.
4730-00-736-7308B9 INTERCHANGEABLE
Clamp,hose
Dixon Valve & Coupling Company, Llc Div Dixon Fire
Cross-Reference Index
Part NumberManufacturer
B9 PRIMARY Ward Leonard Ct Llc (USA)
Related Parts
4310-00-006-9542INTERCHANGEABLE
CRANKCASE,COMPRESSO
B9
3110-00-100-3148INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
14136A
3110-00-155-6240INTERCHANGEABLE
BEARING,BALL,ANNULAR
10702
3110-00-155-9149INTERCHANGEABLE
BEARING,BALL,THRUST
3110-00-155-9573INTERCHANGEABLE
BEARING,BALL,ANNULAR
056-2
5930-00-296-6422INTERCHANGEABLE
SWITCH,PUSH
697603 PIECE 6
5355-00-433-4075INTERCHANGEABLE
KNOB
B-9
4140-00-540-1076INTERCHANGEABLE
FAN,CENTRIFUGAL
6920-00-542-2340INTERCHANGEABLE
CENTER,TARGET REPAIR
B9
4730-00-736-7308INTERCHANGEABLE
CLAMP,HOSE
B9
4820-00-953-8269INTERCHANGEABLE
GLASS,VALVE GAGE
JMS-0633
3455-01-047-1805INTERCHANGEABLE
CUTTER,MILLING,END
45091

Frequently Asked Questions

What is NSN 5999-00-409-9274?

NSN 5999-00-409-9274 is a Heater,thermal Release, manufactured by Ward Leonard Ct Llc, classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-00-409-9274?

NSN 5999-00-409-9274 has 1 cross-referenced part number: B9 (Ward Leonard Ct Llc).

What NSN replaces 5999-00-409-9274?

There are 12 known substitutes for 5999-00-409-9274: 4310-00-006-9542, 3110-00-100-3148, 3110-00-155-6240 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B9?

Key specifications for B9: Overall Length: 1.688 INCHES NOMINAL IN; Overall Height: 1.250 INCHES NOMINAL IN; Mounting Hole Diameter: 0.188 INCHES NOMINAL IN; Mounting Facility Type and Quantity: 2 UNTHREADED HOLE(S). 10 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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