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66-54 — TRANSFORMER,AUDIO FREQUENCY

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

66-54: TRANSFORMER,AUDIO FREQUENCY.

The TRANSFORMER,AUDIO FREQUENCY is a the manufacturer industrial component. Key specifications include material: COPPER OVERALL, point_type: CONVENTIONAL, seat_angle: 30.0 DEGREES FIRST END, valve_size: 1.000 INCHES IN, point_angle: 118.0 DEGREES NOMINAL, shank_style: STRAIGHT ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5133-00-061-6290, 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
66-54
NSN: 5133-00-061-6290
NIINs: 000616290, 003474726, 004303264, 007366115, 007850833, 007952935, 008742018, 009829666, 010572421, 012190141, 013501104, 014171471, 014399640, 016091829, 016637188
FSC: 5133 — Drill Bits, Counterbores, and Countersinks: Hand and Machine
CAGE: 71485 — UNION BUTTERFIELD CORP P O BOX 9000 CRYSTAL LAKE IL 60039 (USA)
SPECIFICATIONS
materialCOPPER OVERALL
point_typeCONVENTIONAL
seat_angle30.0 DEGREES FIRST END
valve_size1.000 INCHES IN
point_angle118.0 DEGREES NOMINAL
shank_styleSTRAIGHT ROUND
temp_rating-30.0 CELSIUS AND 70.0 CELSIUS DEGC
flute_length2.500 INCHES NOMINAL IN
inside_width4.125 INCHES NOMINAL IN
thread_class2A STUD THREAD A
inside_length9.500 INCHES NOMINAL IN
overall_width4.000 INCHES MAXIMUM IN
NSN5133-00-061-6290
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available TRANSFORMER,AUDIO FREQUENCY TITLE COMPONENT PN 66-54 MFR TRANSFORMER,AUDIO FREQ
KEY FEATURES
•
SHANK DIAMETER: 0.209 INCHES NOMINAL IN
•
CUTTING END STYLE: GENERAL PURPOSE
•
FLUTE LENGTH: 2.500 INCHES NOMINAL IN
•
NOMINAL CUTTING DIAMETER: 0.2090 INCHES IN
•
CUTTING ROTATION DIRECTION: LEFT-HAND
•
SHANK STYLE: STRAIGHT ROUND
•
FLUTE QUANTITY: 2
TECHNICAL CHARACTERISTICS
SHANK DIAMETER0.209 INCHES NOMINAL IN
CUTTING END STYLEGENERAL PURPOSE
FLUTE LENGTH2.500 INCHES NOMINAL IN
OVERALL LENGTH3.750 INCHES NOMINAL IN
NOMINAL CUTTING DIAMETER0.2090 INCHES IN
CUTTING ROTATION DIRECTIONLEFT-HAND
SHANK STYLESTRAIGHT ROUND
FLUTE QUANTITY2
SPECIAL FEATURESJOBBERS LG; WIRE SIZE 4
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 6
2006 4Reference document
Same NSN cross-reference
Reference document — Secondary reference
41-11051Reference document
Same NSN cross-reference
Reference document — Secondary reference
GGG-D-751Reference document
Same NSN cross-reference
Reference document — Secondary reference
01512Reference document
Same NSN cross-reference
Reference document — Secondary reference
150L 4Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
GGG-D-751 TYCReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 66-54?
66-54 is a TRANSFORMER,AUDIO FREQUENCY.
What parts can replace 66-54?
There are 6 known substitutes for 66-54: 2006 4, 41-11051, GGG-D-751 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 66-54?
66-54 is cataloged in the U.S. Government catalog under NSN 5133-00-061-6290. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.