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220081 — TRANSFORMER,POWER

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

220081: TRANSFORMER,POWER.

The TRANSFORMER,POWER is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2024, nut_style: HEXAGON, body_width: 6.375 INCHES NOMINAL IN, nut_height: 0.641 INCHES NOMINAL IN, body_height: 11.750 INCHES NOMINAL IN, body_length: 5.344 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-022-0081, 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
220081
NSN: 5310-00-022-0081
NIINs: 000220081, 003448313, 007395294, 009321176, 011224764, 011966690, 014506820
FSC: 5310 — Nuts and Washers
CAGE: 7X677 — GENERAL MOTORS LLC DBA GENERAL MOTORS LLC (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024
nut_styleHEXAGON
body_width6.375 INCHES NOMINAL IN
nut_height0.641 INCHES NOMINAL IN
body_height11.750 INCHES NOMINAL IN
body_length5.344 INCHES NOMINAL IN
thread_class2B
overall_depth0.515 INCHES MINIMUM AND 0.545 INCHES MAXIMUM IN
thread_seriesUNIFIED NATIONAL COARSE (UNC)
cooling_methodSELF-COOLED
inclosure_typeFULLY INCLOSED
inside_diameter0.749 INCHES MINIMUM AND 0.751 INCHES MAXIMUM IN
NSN5310-00-022-0081
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 220081 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
WIDTH ACROSS FLATS: 1.125 INCHES NOMINAL IN
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.750 INCHES IN
•
SPECIFICATION/STANDARD DATA: 80204-B18-2-2-65 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
•
NUT HEIGHT: 0.641 INCHES NOMINAL IN
•
NUT STYLE: HEXAGON
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS1.125 INCHES NOMINAL IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.750 INCHES IN
SPECIFICATION/STANDARD DATA80204-B18-2-2-65 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
NUT HEIGHT0.641 INCHES NOMINAL IN
NUT STYLEHEXAGON
THREAD CLASS2B
THREAD QUANTITY PER INCH10
SUBSTITUTES & CROSS-REFERENCES 7
64049Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
804723Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
REGULARNUTReference document
Same NSN cross-reference
Reference document — Secondary reference
B18-2-2Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
171SA170Reference document
Same NSN cross-reference
Reference document — Secondary reference
P12Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 220081?
220081 is a TRANSFORMER,POWER.
What parts can replace 220081?
There are 7 known substitutes for 220081: 64049, 804723, REGULARNUT and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 220081?
220081 is cataloged in the U.S. Government catalog under NSN 5310-00-022-0081. 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.