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PartsTable / COMPONENT / M45938/11-4CL
M45938/11-4CL ✓ 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 M45938/11-4CL 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 5310-01-239-3538, 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
M45938/11-4CL
NSN: 5310-01-239-3538
FSC: 5310
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
Part NumberM45938/11-4CL
NSN5310-01-239-3538
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: M45938/11-4CL · 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
•
SURFACE TREATMENT: PASSIVATE SHELL
•
NOMINAL THREAD SIZE: 0.138 INCHES IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE SHELL
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE NUT
•
PILOT LENGTH: 0.054 INCHES MAXIMUM IN
•
TEMP RATING: 400.0 FAHRENHEIT MAXIMUM DEGF
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENTPASSIVATE SHELL
NOMINAL THREAD SIZE0.138 INCHES IN
SURFACE TREATMENTCADMIUM AND CHROMATE NUT
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A582 ASSN STD SINGLE MATERIAL RESPONSE SHELL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE NUT
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A582 ASSN STD SINGLE MATERIAL RESPONSE NUT
PILOT LENGTH0.054 INCHES MAXIMUM IN
TEMP RATING400.0 FAHRENHEIT MAXIMUM DEGF
THREAD DIRECTIONRIGHT-HAND
LOCKING FEATUREPREVAILING TORQUE ALL METAL DESIGN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
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 M45938/11-4CL?
M45938/11-4CL is a M45938/11-4CL.
What parts can replace M45938/11-4CL?
There are 19 known substitutes for M45938/11-4CL: AC-032-2, 322640-14, 3995-0002 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M45938/11-4CL?
M45938/11-4CL is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-239-3538. 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