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Technical Data Sheet
PartsTable / COMPONENT / M45938/11-11C
M45938/11-11C ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The M45938/11-11C is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-234-2571, 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
M45938/11-11C
NSN: 5310-01-234-2571
FSC: 5310
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
Part NumberM45938/11-11C
NSN5310-01-234-2571
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: M45938/11-11C · 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
•
MATERIAL: STEEL COMP 303 OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
TEMP RATING: 400.0 FAHRENHEIT MAXIMUM DEGF
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
THREAD QUANTITY PER INCH: 20
•
FEATURES PROVIDED: FLOATING NUT
•
NOMINAL THREAD SIZE: 0.250 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL COMP 303 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
END ITEM IDENTIFICATIONMRAP - COUGAR CAT1 A1
TEMP RATING400.0 FAHRENHEIT MAXIMUM DEGF
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH20
FEATURES PROVIDEDFLOATING NUT
NOMINAL THREAD SIZE0.250 INCHES IN
THREAD DIRECTIONRIGHT-HAND
NUT DIAMETER0.600 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
AC-032-2Interchangeable
interchangeable cross-reference
interchangeable
322640-14Interchangeable
interchangeable cross-reference
interchangeable
3995-0002Interchangeable
interchangeable cross-reference
interchangeable
MIL-N-45938/11Interchangeable
interchangeable cross-reference
interchangeable
M45938/11-2LInterchangeable
interchangeable cross-reference
interchangeable
M45938/11-2CLInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M45938/11-11C?
M45938/11-11C is a M45938/11-11C.
What parts can replace M45938/11-11C?
There are 16 known substitutes for M45938/11-11C: AC-032-2, 322640-14, 3995-0002 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M45938/11-11C?
M45938/11-11C is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-234-2571. 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