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54166 ✓ Verified by PartsTable
Trefl · COMPONENT
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

The MICROCIRCUIT,DIGITAL is a Trefl industrial component. Key specifications include length: 0.188 INCHES NOMINAL SQUARE END IN, material: STEEL OVERALL, body_width: 0.514 INCHES MINIMUM AND 0.525 INCHES MAXIMUM IN, body_height: 0.205 INCHES MAXIMUM IN, body_length: 1.290 INCHES MAXIMUM IN, current_type: AC/DC. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5136-00-236-4328, 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
54166
NSN: 5136-00-236-4328
FSC: 5136
CAGE: 0X835 — TAPCO CUTTING TOOLS INC (USA)
SPECIFICATIONS
length0.188 INCHES NOMINAL SQUARE END IN
materialSTEEL OVERALL
body_width0.514 INCHES MINIMUM AND 0.525 INCHES MAXIMUM IN
body_height0.205 INCHES MAXIMUM IN
body_length1.290 INCHES MAXIMUM IN
current_typeAC/DC
thread_length0.625 INCHES NOMINAL IN
flute_quantity3
overall_height0.350 INCHES NOMINAL IN
overall_length1.938 INCHES NOMINAL IN
shank_diameter0.141 INCHES NOMINAL IN
special_featuresASSEMBLY INCLUDES FIVE IC,MEMORY,2716 WITH PART NUMBERS 54-166,54-167,54-168,54-169,54-490
NSN5136-00-236-4328
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR MFR: Trefl MICROCIRCUIT,DIGITAL TITLE COMPONENT PN 54166 MFR Trefl MICROCIRCUIT,DIGITAL
KEY FEATURES
•
SHANK DIAMETER: 0.141 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD STRUCTURE: REGULAR
•
THREAD PITCH IN MILLIMETERS: 0.50
•
FLUTE QUANTITY: 3
•
STYLE DESIGNATOR: STRAIGHT FLUTE
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
SHANK DIAMETER0.141 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
OVERALL LENGTH1.938 INCHES NOMINAL IN
THREAD STRUCTUREREGULAR
THREAD PITCH IN MILLIMETERS0.50
FLUTE QUANTITY3
STYLE DESIGNATORSTRAIGHT FLUTE
MATERIALSTEEL OVERALL
THREAD FORMING METHODGROUND
LENGTH0.188 INCHES NOMINAL SQUARE END IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
E711208Interchangeable
interchangeable cross-reference
interchangeable
AMS-QQ-A-200/3Interchangeable
interchangeable cross-reference
interchangeable
60-894Interchangeable
interchangeable cross-reference
interchangeable
C54248Interchangeable
interchangeable cross-reference
interchangeable
54248Interchangeable
interchangeable cross-reference
interchangeable
GGG-T-60Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 54166?
54166 is a MICROCIRCUIT,DIGITAL manufactured by Trefl.
What parts can replace 54166?
There are 26 known substitutes for 54166: E711208, AMS-QQ-A-200/3, 60-894 and 23 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 54166?
54166 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5136-00-236-4328. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026