PartsTable
Technical Data Sheet
PartsTable / MRO / C-66
C-66 ✓ 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 shape: STRAIGHT, length: 1.250 INCHES NOMINAL IN, diameter: 0.056 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN, material: STEEL COMP 302 OR STEEL COMP 304 OVERALL, thickness: 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN, point_type: EXTENDED PRONG SQUARE CUT. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3455-00-187-2567, 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→ C-66
NSN: 3455-00-187-2567
FSC: 3455
CAGE: 94687 — BEAVER CUT ROTARY FILE CO (USA)
SPECIFICATIONS
shapeSTRAIGHT
length1.250 INCHES NOMINAL IN
diameter0.056 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN
materialSTEEL COMP 302 OR STEEL COMP 304 OVERALL
thickness0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN
point_typeEXTENDED PRONG SQUARE CUT
design_typeNONREUSABLE
body_diameter4.375 INCHES NOMINAL IN
body_materialSTEEL
bore_diameter0.2510 INCHES MINIMUM AND 0.2520 INCHES MAXIMUM IN
overall_depth0.500 INCHES NOMINAL IN
overall_width1.000 INCHES NOMINAL IN
NSN3455-00-187-2567
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available THERMAL RELEASE,CIRCUIT BREAKER TITLE COMPONENT PN C-66 MFR THERMAL RELEASE,CIRCUI
KEY FEATURES
•
CUTTER TOOTH SHAPING METHOD: MILLED CUT
•
STYLE DESIGNATOR: CYLINDRICAL SHAPE
•
DIAMETER: 0.250 INCHES NOMINAL IN
•
MATERIAL: STEEL
•
NONDEFINITIVE SPEC/STD DATA: 1 TYPE AND A STYLE AND 5 SIZE AND B CLASS
•
MOUNTING SHANK: INCLUDED
•
CUTTING SURFACE LENGTH: 1.000 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CUTTER TOOTH SHAPING METHODMILLED CUT
STYLE DESIGNATORCYLINDRICAL SHAPE
DIAMETER0.250 INCHES NOMINAL IN
MATERIALSTEEL
NONDEFINITIVE SPEC/STD DATA1 TYPE AND A STYLE AND 5 SIZE AND B CLASS
STYLE DESIGNATORCYLINDRICAL SHAPE
MOUNTING SHANKINCLUDED
CUTTING SURFACE LENGTH1.000 INCHES NOMINAL IN
NONDEFINITIVE SPEC/STD DATA1 TYPE AND A STYLE AND 5 SIZE AND B CLASS
SHANK OVERALL LENGTH2.250 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 32
A1426TInterchangeable
interchangeable cross-reference
interchangeable
07-100614Interchangeable
interchangeable cross-reference
interchangeable
100614Interchangeable
interchangeable cross-reference
interchangeable
SS-S-736 TY2ST1CLA2Interchangeable
interchangeable cross-reference
interchangeable
SS-S-736Interchangeable
interchangeable cross-reference
interchangeable
122Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is C-66?
C-66 is a THERMAL RELEASE,CIRCUIT BREAKER. It is classified as a MRO (MRO_GENERAL).
What parts can replace C-66?
There are 32 known substitutes for C-66: A1426T, 07-100614, 100614 and 29 more. Substitute compatibility should be verified for your specific system.
Is C-66 still available?
C-66 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