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55-22278-24A — NUT,SLEEVE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

55-22278-24A: NUT,SLEEVE.

The NUT,SLEEVE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, nut_style: SLEEVE, nut_length: 2.312 INCHES NOMINAL IN, nut_diameter: 2.485 INCHES MINIMUM AND 2.490 INCHES MAXIMUM IN, thread_class: 3B, thread_length: 1.500 INCHES NOMINAL OVERALL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-980-4848, 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
55-22278-24A
NSN: 5310-00-980-4848
FSC: 5310 — Nuts and Washers
CAGE: 52081 — EURAMCO SAFETY INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
nut_styleSLEEVE
nut_length2.312 INCHES NOMINAL IN
nut_diameter2.485 INCHES MINIMUM AND 2.490 INCHES MAXIMUM IN
thread_class3B
thread_length1.500 INCHES NOMINAL OVERALL IN
thread_seriesUN
flange_diameter3.000 INCHES NOMINAL IN
flange_thickness0.188 INCHES NOMINAL IN
thread_directionLEFT-HAND
nominal_thread_size2.000 INCHES IN
cross-sectional_shapeROUND FLANGE
NSN5310-00-980-4848
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 55-22278-24A · 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
•
FLANGE DIAMETER: 3.000 INCHES NOMINAL IN
•
NUT LENGTH: 2.312 INCHES NOMINAL IN
•
FLANGE THICKNESS: 0.188 INCHES NOMINAL IN
•
THREAD SERIES: UN
•
THREAD LENGTH: 1.500 INCHES NOMINAL OVERALL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-C-390,ALLOY 903 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: LEFT-HAND
•
NOMINAL THREAD SIZE: 2.000 INCHES IN
TECHNICAL CHARACTERISTICS
FLANGE DIAMETER3.000 INCHES NOMINAL IN
NUT LENGTH2.312 INCHES NOMINAL IN
FLANGE THICKNESS0.188 INCHES NOMINAL IN
THREAD SERIESUN
THREAD LENGTH1.500 INCHES NOMINAL OVERALL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-C-390,ALLOY 903 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONLEFT-HAND
NOMINAL THREAD SIZE2.000 INCHES IN
NUT DIAMETER2.485 INCHES MINIMUM AND 2.490 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPEROUND FLANGE
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES 2
CS4320-0062Reference document
Same NSN cross-reference
Reference document — Secondary reference
08-500-121-00-028Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 55-22278-24A?
55-22278-24A is a NUT,SLEEVE.
What parts can replace 55-22278-24A?
There are 2 known substitutes for 55-22278-24A: CS4320-0062, 08-500-121-00-028. Substitute compatibility should be verified for your specific system.
What is the NSN for 55-22278-24A?
55-22278-24A is cataloged in the U.S. Government catalog under NSN 5310-00-980-4848. 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.