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MS21083C16 — NUT,SELF-LOCKING,HEXAGON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

MS21083C16: NUT,SELF-LOCKING,HEXAGON.

The NUT,SELF-LOCKING,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING NUT, nut_style: HEXAGON, nut_height: 0.578 INCHES MAXIMUM IN, lubrication: SOLUBLE LUBRICANT, temp_rating: 250.0 FAHRENHEIT MAXIMUM DEGF, thread_class: 3B. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-160-9869, 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
MS21083C16
NSN: 5310-00-160-9869
FSC: 5310 — Nuts and Washers
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING NUT
nut_styleHEXAGON
nut_height0.578 INCHES MAXIMUM IN
lubricationSOLUBLE LUBRICANT
temp_rating250.0 FAHRENHEIT MAXIMUM DEGF
thread_class3B
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)
locking_featurePREVAILING TORQUE WITH NONMETALLIC INSERT
thread_directionRIGHT-HAND
countersink_angle88.0 DEGREES MINIMUM NUT
surface_treatmentPASSIVATE OVERALL EXCEPT INSERT
width_across_flats1.427 INCHES MINIMUM AND 1.440 INCHES MAXIMUM IN
NSN5310-00-160-9869
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MS21083C16 · 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
•
LUBRICATION: SOLUBLE LUBRICANT
•
WIDTH ACROSS FLATS: 1.427 INCHES MINIMUM AND 1.440 INCHES MAXIMUM IN
•
BEARING SURFACE FINISH: 125.0 MICROINCHES
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSERT
•
THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)
•
TEMP RATING: 250.0 FAHRENHEIT MAXIMUM DEGF
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 1.000 INCHES IN
TECHNICAL CHARACTERISTICS
LUBRICATIONSOLUBLE LUBRICANT
WIDTH ACROSS FLATS1.427 INCHES MINIMUM AND 1.440 INCHES MAXIMUM IN
BEARING SURFACE FINISH125.0 MICROINCHES
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSERT
THREAD SERIESUNIFIED NATIONAL JOINT FINE (UNJF)
TEMP RATING250.0 FAHRENHEIT MAXIMUM DEGF
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE1.000 INCHES IN
LOCKING FEATUREPREVAILING TORQUE WITH NONMETALLIC INSERT
NUT HEIGHT0.578 INCHES MAXIMUM IN
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES 3
79NTE-162Reference document
Same NSN cross-reference
Reference document — Secondary reference
002-004048-014Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
NASM25027Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MS21083C16?
MS21083C16 is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace MS21083C16?
There are 3 known substitutes for MS21083C16: 79NTE-162, 002-004048-014, NASM25027. Substitute compatibility should be verified for your specific system.
What is the NSN for MS21083C16?
MS21083C16 is cataloged in the U.S. Government catalog under NSN 5310-00-160-9869. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.