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Technical Data Sheet
PartsTable / MRO / 81-67
81-67 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

THERMAL RELEASE,CIRCUIT BREAKER. Key specifications include material: STEEL OVERALL, end_style: SPRING END,SQUARED AND GROUND BOTH ENDS, tube_type: TETRODE, body_material: STEEL, coil_quantity: 3-1/4, overall_depth: 0.500 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5960-00-082-3973, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
MRO→ MRO_GENERAL→ 81-67
NSN: 5960-00-082-3973
FSC: 5960
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL OVERALL
end_styleSPRING END,SQUARED AND GROUND BOTH ENDS
tube_typeTETRODE
body_materialSTEEL
coil_quantity3-1/4
overall_depth0.500 INCHES NOMINAL IN
overall_width1.000 INCHES NOMINAL IN
overall_length1.875 INCHES NOMINAL IN
inside_diameter0.165 INCHES NOMINAL IN
special_featuresENVELOPE MATERIAL :CERAMIC AND METAL
style_designatorCYLINDRICAL
spring_free_length0.219 INCHES NOMINAL IN
NSN5960-00-082-3973
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available THERMAL RELEASE,CIRCUIT BREAKER TITLE COMPONENT PN 81-67 MFR THERMAL RELEASE,CIRCUI
KEY FEATURES
•
TUBE TYPE: TETRODE
•
NONDEFINITIVE SPEC/STD DATA: 8167 TYPE
TECHNICAL CHARACTERISTICS (FLIS)
TUBE TYPETETRODE
SPECIAL FEATURESENVELOPE MATERIAL :CERAMIC AND METAL
NONDEFINITIVE SPEC/STD DATA8167 TYPE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
BR26229Interchangeable
interchangeable cross-reference
interchangeable
8167Interchangeable
interchangeable cross-reference
interchangeable
262293Interchangeable
interchangeable cross-reference
interchangeable
4CX300AInterchangeable
interchangeable cross-reference
interchangeable
B1-67Interchangeable
interchangeable cross-reference
interchangeable
B1.65Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 81-67?
81-67 is a THERMAL RELEASE,CIRCUIT BREAKER. It is classified as a MRO (MRO_GENERAL).
What parts can replace 81-67?
There are 14 known substitutes for 81-67: BR26229, 8167, 262293 and 11 more. Substitute compatibility should be verified for your specific system.
Is 81-67 still available?
81-67 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026