PartsTable
Technical Data Sheet
MS21044-C8 ✓ 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 COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 NUT, nut_style: HEXAGON, nut_height: 0.575 INCHES MINIMUM AND 0.610 INCHES MAXIMUM IN, lubrication: SOLUBLE LUBRICANT, temp_rating: 250.0 FAHRENHEIT NOMINAL DEGF, thread_class: 3B. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-982-4973, 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
MS21044-C8
NSN: 5310-00-982-4973
FSC: 5310
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 NUT
nut_styleHEXAGON
nut_height0.575 INCHES MINIMUM AND 0.610 INCHES MAXIMUM IN
lubricationSOLUBLE LUBRICANT
temp_rating250.0 FAHRENHEIT NOMINAL DEGF
thread_class3B
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)
locking_featurePREVAILING TORQUE WITH NONMETALLIC INSERT
thread_directionRIGHT-HAND
countersink_angle88.0 DEGREES NOMINAL NUT
surface_treatmentPASSIVATE OVERALL EXCEPT INSERT
width_across_flats0.741 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN
NSN5310-00-982-4973
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MS21044-C8 · 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 NOMINAL NUT
MATERIAL: STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 NUT
THREAD CLASS: 3B
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
SURFACE TREATMENT: PASSIVATE OVERALL EXCEPT INSERT
THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)
WIDTH ACROSS FLATS: 0.741 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
COUNTERSINK ANGLE88.0 DEGREES NOMINAL NUT
MATERIALSTEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 NUT
THREAD CLASS3B
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
SURFACE TREATMENTPASSIVATE OVERALL EXCEPT INSERT
THREAD SERIESUNIFIED NATIONAL JOINT FINE (UNJF)
WIDTH ACROSS FLATS0.741 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN
END ITEM IDENTIFICATIONMULTIPLE LAUNCH ROCKET SYSTEM (MLRS)
THREAD QUANTITY PER INCH20
TEMP RATING250.0 FAHRENHEIT NOMINAL DEGF
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
0684-2741Interchangeable
interchangeable cross-reference
interchangeable
N400-512-121Interchangeable
interchangeable cross-reference
interchangeable
7890029-15Interchangeable
interchangeable cross-reference
interchangeable
410072Interchangeable
interchangeable cross-reference
interchangeable
MS17830-8FInterchangeable
interchangeable cross-reference
interchangeable
00410072000Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS21044-C8?
MS21044-C8 is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace MS21044-C8?
There are 10 known substitutes for MS21044-C8: 0684-2741, N400-512-121, 7890029-15 and 7 more. Substitute compatibility should be verified for your specific system.
Is MS21044-C8 still available?
MS21044-C8 is currently cancelled.
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