PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B1.45Heater,thermal Release

Schneider Electric Usa, Inc. · NSN 5999-00-769-4976 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-769-4976 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-769-4976. Primary manufacturer part number: B1.45.
Features
  • Heater,thermal Release — FSC 5999
  • 4 verified cross-references
  • Primary manufacturer: Schneider Electric Usa, Inc.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Heater,thermal Release, cataloged under National Stock Number 5999-00-769-4976, 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 Schneider Electric Usa, Inc.. This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-00-769-4976
Primary Part NumberB1.45
Item NameHeater,thermal Release
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerSchneider Electric Usa, Inc.
StatusCANCELLED
Lifecycle & Compliance
Acquisition StatusCANCELLED
Successor6145-00-112-8671
HAZMATNo
Shelf Life Code0
Criticality CodeN
Unit of IssueEA
SMR CodeZN
Weight0.1200 lbs
Cube0.0109 cu ft
Verified Substitutes 11
Cable,power,electrical
Probe,test
4920-00-014-1505B145 INTERCHANGEABLE
Fixture,test,load
Lockheed Martin Corp
5331-00-106-05398145-366Y INTERCHANGEABLE
O-Ring
Minnesota Rubber Co
6105-00-635-47058145 INTERCHANGEABLE
Motor,direct Current
Astrex Inc
4820-00-813-85181184 1-1/4IN INTERCHANGEABLE
Valve,gate
Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc
2610-00-945-332012504897 INTERCHANGEABLE
Tire,pneumatic,vehicular
U S Army Tank Automotive Command Amsta-Im-Mm
5365-00-985-668181-45 INTERCHANGEABLE
Shim
Curtiss-Wright Controls Integrated Sensing, Inc.
5315-01-486-06138145 INTERCHANGEABLE
Pin,spring
Singer Industrial Sewing Products Co
1080-01-524-2837 INTERCHANGEABLE
Repair Kit,turret
Cross-Reference Index
Part NumberManufacturer
B1-45 Schneider Electric Usa, Inc. (USA)
B1-45 Schneider Electric Usa, Inc. (USA)
81-45 Schneider Electric Usa, Inc Dba Schneider Electric (USA)
B1.45 PRIMARY Schneider Electric Usa, Inc. (USA)
Related Parts
SUCCESSOR 6145-00-112-8671 Cable,power,electrical
6625-01-266-5694SUCCESSOR
PROBE,TEST
4920-00-014-1505INTERCHANGEABLE
FIXTURE,TEST,LOAD
B145
5331-00-106-0539INTERCHANGEABLE
O-RING
8145-366Y
6105-00-635-4705INTERCHANGEABLE
MOTOR,DIRECT CURRENT
8145
4820-00-813-8518INTERCHANGEABLE
VALVE,GATE
1184 1-1/4IN
2610-00-945-3320INTERCHANGEABLE
TIRE,PNEUMATIC,VEHICULAR
12504897
5365-00-985-6681INTERCHANGEABLE
SHIM
81-45
5315-01-486-0613INTERCHANGEABLE
PIN,SPRING
8145
1080-01-524-2837INTERCHANGEABLE
REPAIR KIT,TURRET
4320-01-550-2383INTERCHANGEABLE
PUMP,RECIPROCATING
8145

Frequently Asked Questions

What is NSN 5999-00-769-4976?

NSN 5999-00-769-4976 is a Heater,thermal Release, manufactured by Schneider Electric Usa, Inc., classified under FSC 5999 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5999-00-769-4976?

NSN 5999-00-769-4976 has 4 cross-referenced part numbers: B1-45 (Schneider Electric Usa, Inc.), B1-45 (Schneider Electric Usa, Inc.), 81-45 (Schneider Electric Usa, Inc Dba Schneider Electric), B1.45 (Schneider Electric Usa, Inc.).

What NSN replaces 5999-00-769-4976?

There are 11 known substitutes for 5999-00-769-4976: 6145-00-112-8671, 6625-01-266-5694, 4920-00-014-1505 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B1.45?

Key specifications for B1.45: Special Features: BI-METALLIC ELEMENT;1.875 IN. LG;0.937 IN. W;0.500 IN. H;ONE ESCAPEMENT WHEEL;TWO 0.218 IN. DIA MTG HOLES SPACED 1.375 IN. C TO C IN; Special Features: BI-METALLIC ELEMENT;1.875 IN. LG;0.937 IN. W;0.500 IN. H;ONE ESCAPEMENT WHEEL;TWO 0.218 IN. DIA MTG HOLES SPACED 1.375 IN. C TO C IN. 2 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5999-00-769-4976 still in active supply?

NSN 5999-00-769-4976 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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