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PartsTable / COMPONENT / MS21042C06
MS21042C06 ✓ 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

NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: STEEL OVERALL, nut_style: HEXAGON, lubrication: DRY FILM LUBRICANT, temp_rating: 450.0 FAHRENHEIT NOMINAL DEGF, thread_class: 3B, thread_series: UNJC. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-807-1472, 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
MS21042C06
NSN: 5310-00-807-1472
FSC: 5310
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
lubricationDRY FILM LUBRICANT
temp_rating450.0 FAHRENHEIT NOMINAL DEGF
thread_class3B
thread_seriesUNJC
overall_height0.115 INCHES MINIMUM AND 0.141 INCHES MAXIMUM IN
hardness_rating49.0 ROCKWELL C MAXIMUM
locking_featurePREVAILING TORQUE ALL METAL DESIGN
special_featuresNUT SELF-LOCKING
thread_directionRIGHT-HAND
washer_thickness0.010 INCHES MINIMUM IN
NSN5310-00-807-1472
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MS21042C06 · 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
•
WASHER OUTSIDE DIAMETER: 0.244 INCHES MAXIMUM IN
•
WASHER THICKNESS: 0.010 INCHES MINIMUM IN
•
LOCKING FEATURE: PREVAILING TORQUE ALL METAL DESIGN
•
THREAD QUANTITY PER INCH: 32
•
THREAD CLASS: 3B
•
WIDTH ACROSS FLATS: 0.181 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
WASHER OUTSIDE DIAMETER0.244 INCHES MAXIMUM IN
WASHER THICKNESS0.010 INCHES MINIMUM IN
LOCKING FEATUREPREVAILING TORQUE ALL METAL DESIGN
SPECIAL FEATURESNUT SELF-LOCKING
THREAD QUANTITY PER INCH32
THREAD CLASS3B
WIDTH ACROSS FLATS0.181 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
SURFACE TREATMENTCADMIUM OVERALL
TEMP RATING450.0 FAHRENHEIT NOMINAL DEGF
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
AS8600BInterchangeable
interchangeable cross-reference
interchangeable
98402-3Interchangeable
interchangeable cross-reference
interchangeable
96P-62WInterchangeable
interchangeable cross-reference
interchangeable
MN16-06Interchangeable
interchangeable cross-reference
interchangeable
MS21042-06Interchangeable
interchangeable cross-reference
interchangeable
5310PL0150571Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS21042C06?
MS21042C06 is a NUT,SELF-LOCKING,EXTENDED WASHER.
What parts can replace MS21042C06?
There are 13 known substitutes for MS21042C06: AS8600B, 98402-3, 96P-62W and 10 more. Substitute compatibility should be verified for your specific system.
Is MS21042C06 still available?
MS21042C06 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026