PartsTable
Technical Data Sheet
MS20365-624A ✓ 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 nut_style: HEXAGON, nut_height: 0.318 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN, lubrication: SOLUBLE LUBRICANT, temp_rating: 250.0 FAHRENHEIT NOMINAL DEGF, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF). This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-275-2090, 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
MS20365-624A
NSN: 5310-00-275-2090
FSC: 5310
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
nut_styleHEXAGON
nut_height0.318 INCHES MINIMUM AND 0.469 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_treatmentCADMIUM OVERALL EXCEPT INSERT
width_across_flats0.553 INCHES MINIMUM AND 0.564 INCHES MAXIMUM IN
nominal_thread_size0.375 INCHES IN
NSN5310-00-275-2090
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MS20365-624A · 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
THREAD CLASS: 3B
NUT HEIGHT: 0.453 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN
BEARING SURFACE TYPE: FLAT
NOMINAL THREAD SIZE: 0.375 INCHES IN
WIDTH ACROSS FLATS: 0.553 INCHES MINIMUM AND 0.563 INCHES MAXIMUM IN
THREAD QUANTITY PER INCH: 24
LOCKING FEATURE: PREVAILING TORQUE WITH NONMETALLIC INSERT
THREAD SERIES: UNF
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS3B
NUT HEIGHT0.453 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN
BEARING SURFACE TYPEFLAT
NOMINAL THREAD SIZE0.375 INCHES IN
WIDTH ACROSS FLATS0.553 INCHES MINIMUM AND 0.563 INCHES MAXIMUM IN
THREAD QUANTITY PER INCH24
LOCKING FEATUREPREVAILING TORQUE WITH NONMETALLIC INSERT
THREAD SERIESUNF
MATERIALSTEEL LOCKING INSERT
NUT STYLEHEXAGON
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
5310PL0530873Interchangeable
interchangeable cross-reference
interchangeable
MS21044N6Interchangeable
interchangeable cross-reference
interchangeable
5310PL2091896Interchangeable
interchangeable cross-reference
interchangeable
1137-624Interchangeable
Same NIIN cross-reference
interchangeable
AN365-624AInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS20365-624A?
MS20365-624A is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace MS20365-624A?
There are 5 known substitutes for MS20365-624A: 5310PL0530873, MS21044N6, 5310PL2091896 and 2 more. Substitute compatibility should be verified for your specific system.
Is MS20365-624A still available?
MS20365-624A is currently cancelled.
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