PartsTable
Technical Data Sheet
MS21083N3 ✓ 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,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL NUT, nut_style: HEXAGON, nut_height: 0.188 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNF, locking_feature: PREVAILING TORQUE WITH NONMETALLIC INSERT. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-902-6676, 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
MS21083N3
NSN: 5310-00-902-6676
FSC: 5310
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL NUT
nut_styleHEXAGON
nut_height0.188 INCHES NOMINAL IN
thread_class2B
thread_seriesUNF
locking_featurePREVAILING TORQUE WITH NONMETALLIC INSERT
thread_directionRIGHT-HAND
surface_treatmentZINC AND CHROMATE NUT
width_across_flats0.359 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
nominal_thread_size0.190 INCHES IN
bearing_surface_typeCHAMFERED OR WASHER FACED
thread_quantity_per_inch32
NSN5310-00-902-6676
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MS21083N3 · 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
COUNTERSINK ANGLE: 88.0 DEGREES MINIMUM NUT
MATERIAL: PLASTIC POLYAMIDE NYLON LOCKING INSERT
LUBRICATION: SOLUBLE LUBRICANT
LOCKING FEATURE: PREVAILING TORQUE WITH NONMETALLIC INSERT
HARDNESS RATING: 35.0 ROCKWELL C MAXIMUM
SURFACE TREATMENT: CADMIUM AND CHROMATE OVERALL EXCEPT INSERT
THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)
TEMP RATING: 230.0 FAHRENHEIT MAXIMUM DEGF
TECHNICAL CHARACTERISTICS (FLIS)
COUNTERSINK ANGLE88.0 DEGREES MINIMUM NUT
MATERIALPLASTIC POLYAMIDE NYLON LOCKING INSERT
LUBRICATIONSOLUBLE LUBRICANT
LOCKING FEATUREPREVAILING TORQUE WITH NONMETALLIC INSERT
HARDNESS RATING35.0 ROCKWELL C MAXIMUM
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL EXCEPT INSERT
THREAD SERIESUNIFIED NATIONAL JOINT FINE (UNJF)
TEMP RATING230.0 FAHRENHEIT MAXIMUM DEGF
WIDTH ACROSS FLATS0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN
THREAD QUANTITY PER INCH32
VERIFIED SUBSTITUTES & CROSS-REFERENCES 27
094-10200Interchangeable
interchangeable cross-reference
interchangeable
AN364-1032Interchangeable
interchangeable cross-reference
interchangeable
MS20364-1032Interchangeable
interchangeable cross-reference
interchangeable
853921Interchangeable
interchangeable cross-reference
interchangeable
2129800002Interchangeable
interchangeable cross-reference
interchangeable
PI1043Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS21083N3?
MS21083N3 is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace MS21083N3?
There are 27 known substitutes for MS21083N3: 094-10200, AN364-1032, MS20364-1032 and 24 more. Substitute compatibility should be verified for your specific system.
Is MS21083N3 still available?
MS21083N3 is currently cancelled.
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