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MS21044C08 — NUT,SELF-LOCKING,HEXAGON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

MS21044C08: 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: 0.281 INCHES NOMINAL IN, thread_class: 3B, thread_series: UNIFIED NATIONAL COARSE (UNC), locking_feature: PREVAILING TORQUE WITH NONMETALLIC INSERT. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-982-6814, 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
MS21044C08
NSN: 5310-00-982-6814
NIINs: 009826814, 016330195
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_height0.281 INCHES NOMINAL IN
thread_class3B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
locking_featurePREVAILING TORQUE WITH NONMETALLIC INSERT
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
width_across_flats0.344 INCHES NOMINAL IN
nominal_thread_size0.164 INCHES IN
bearing_surface_typeCHAMFERED
end_item_identificationAN/TPN-31 V V
NSN5310-00-982-6814
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MS21044C08 · 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: 0.336 INCHES MINIMUM AND 0.345 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: UNJC
•
TEMP RATING: 250.0 FAHRENHEIT NOMINAL DEGF
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5688 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5640 ASSN STD 2ND MATERIAL RESPONSE OR AMS 5647 ASSN STD 3RD MATERIAL RESPONSE NUT
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
LUBRICATIONSOLUBLE LUBRICANT
WIDTH ACROSS FLATS0.336 INCHES MINIMUM AND 0.345 INCHES MAXIMUM IN
BEARING SURFACE FINISH125.0 MICROINCHES
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT INSERT
THREAD SERIESUNJC
TEMP RATING250.0 FAHRENHEIT NOMINAL DEGF
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5688 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5640 ASSN STD 2ND MATERIAL RESPONSE OR AMS 5647 ASSN STD 3RD MATERIAL RESPONSE NUT
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.164 INCHES IN
LOCKING FEATUREPREVAILING TORQUE WITH NONMETALLIC INSERT
SUBSTITUTES & CROSS-REFERENCES 9
MS20365C-832AReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
2HG737Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
002-003645-003Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
298538-3Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
79NM82Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
203-1011P46Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MS21044C08?
MS21044C08 is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace MS21044C08?
There are 9 known substitutes for MS21044C08: MS20365C-832A, 2HG737, 002-003645-003 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS21044C08?
MS21044C08 is cataloged in the U.S. Government catalog under NSN 5310-00-982-6814. 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.