PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

W66Heater,thermal Release

Rockwell Automation, Inc. Dba Rockwell Automation · NSN 5999-01-436-9506 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-01-436-9506 — this item is cataloged by the U.S. Government under National Stock Number 5999-01-436-9506. Primary manufacturer part number: W66.
Features
  • Heater,thermal Release — FSC 5999
  • Current Rating for Which Designed: 32.0 AMPERES MINIMUM AND 44.5 AMPERES MAXIMUM
  • Current Rating for Which Designed: 32.0 AMPERES MINIMUM AND 44.5 AMPERES MAXIMUM
  • 1 verified cross-reference
  • Primary manufacturer: Rockwell Automation, Inc. Dba Rockwell Automation
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Heater,thermal Release, cataloged under National Stock Number 5999-01-436-9506, 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 Rockwell Automation, Inc. Dba Rockwell Automation. Government technical data includes 2 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-01-436-9506
Primary Part NumberW66
Item NameHeater,thermal Release
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerRockwell Automation, Inc. Dba Rockwell Automation
StatusACTIVE
Current Rating for Which Designed32.0 AMPERES MINIMUM AND 44.5 AMPERES MAXIMUM
Current Rating for Which Designed32.0 AMPERES MINIMUM AND 44.5 AMPERES MAXIMUM
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeZ
Verified Substitutes 2
5120-00-177-7322W-66 INTERCHANGEABLE
Wrench,box and Open End,combinat
Ngk Metals Corporation Dba N G K Berylco
5325-00-353-2994601K311 INTERCHANGEABLE
Ring,retaining
Hyster-Yale Group, Inc. Dba Yale Materials Handling
Cross-Reference Index
Part NumberManufacturer
W66 PRIMARY Rockwell Automation, Inc. Dba Rockwell Automation (USA)
Related Parts
5120-00-177-7322INTERCHANGEABLE
WRENCH,BOX AND OPEN END,COMBINAT
W-66
5325-00-353-2994INTERCHANGEABLE
RING,RETAINING
601K311

Frequently Asked Questions

What is NSN 5999-01-436-9506?

NSN 5999-01-436-9506 is a Heater,thermal Release, manufactured by Rockwell Automation, Inc. Dba Rockwell Automation, classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-01-436-9506?

NSN 5999-01-436-9506 has 1 cross-referenced part number: W66 (Rockwell Automation, Inc. Dba Rockwell Automation).

What NSN replaces 5999-01-436-9506?

There are 2 known substitutes for 5999-01-436-9506: 5120-00-177-7322, 5325-00-353-2994. Verify interchangeability with system specifications before substitution.

What are the specifications of W66?

Key specifications for W66: End Item Identification: P/N 0101-320-01-212 AC CONTROLLER ONBOARD 225 FT WLB CLASS COAST GUARD VESSELS FT; Current Rating for Which Designed: 32.0 AMPERES MINIMUM AND 44.5 AMPERES MAXIMUM; End Item Identification: P/N 0101-320-01-212 AC CONTROLLER ONBOARD 225 FT WLB CLASS COAST GUARD VESSELS FT; Current Rating for Which Designed: 32.0 AMPERES MINIMUM AND 44.5 AMPERES MAXIMUM. 4 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com