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PartsTable / COMPONENT / M45938-6-6
M45938-6-6 ✓ 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 NUT,SELF-LOCKING,SPLINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: SPLINE, nut_height: 0.167 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN, nut_diameter: 0.224 INCHES MINIMUM AND 0.244 INCHES MAXIMUM IN, pilot_length: 0.057 INCHES MINIMUM AND 0.063 INCHES MAXIMUM IN, thread_class: 3B. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-549-6821, 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
M45938-6-6
NSN: 5310-00-549-6821
FSC: 5310
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleSPLINE
nut_height0.167 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
nut_diameter0.224 INCHES MINIMUM AND 0.244 INCHES MAXIMUM IN
pilot_length0.057 INCHES MINIMUM AND 0.063 INCHES MAXIMUM IN
thread_class3B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
pilot_diameter0.190 INCHES MINIMUM AND 0.194 INCHES MAXIMUM IN
locking_featurePREVAILING TORQUE ALL METAL DESIGN
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OVERALL
nominal_thread_size0.138 INCHES IN
NSN5310-00-549-6821
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: M45938-6-6 · 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
•
NUT DIAMETER: 0.224 INCHES MINIMUM AND 0.244 INCHES MAXIMUM IN
•
SURFACE TREATMENT: CADMIUM OVERALL
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
THREAD QUANTITY PER INCH: 32
•
NOMINAL THREAD SIZE: 0.138 INCHES IN
•
MATERIAL: STEEL OVERALL
•
THREAD CLASS: 3B
TECHNICAL CHARACTERISTICS (FLIS)
NUT DIAMETER0.224 INCHES MINIMUM AND 0.244 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH32
NOMINAL THREAD SIZE0.138 INCHES IN
MATERIALSTEEL OVERALL
THREAD CLASS3B
NUT HEIGHT0.167 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
1752101-3Interchangeable
interchangeable cross-reference
interchangeable
M45938-6-8Interchangeable
interchangeable cross-reference
interchangeable
MILN45938-6Interchangeable
interchangeable cross-reference
interchangeable
200AS106-6B060CRInterchangeable
interchangeable cross-reference
interchangeable
1769455-37Interchangeable
interchangeable cross-reference
interchangeable
10121915Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M45938-6-6?
M45938-6-6 is a NUT,SELF-LOCKING,SPLINE.
What parts can replace M45938-6-6?
There are 21 known substitutes for M45938-6-6: 1752101-3, M45938-6-8, MILN45938-6 and 18 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M45938-6-6?
M45938-6-6 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-549-6821. 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