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Technical Data Sheet
PartsTable / COMPONENT / MS20364-720A
MS20364-720A ✓ 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: PLASTIC POLYAMIDE NYLON CHANNEL, nut_style: HEXAGON, nut_height: 0.328 INCHES MAXIMUM IN, lubrication: SOLUBLE LUBRICANT, temp_rating: 250.0 FAHRENHEIT MAXIMUM DEGF, thread_class: 3B. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-275-2012, 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
MS20364-720A
NSN: 5310-00-275-2012
FSC: 5310
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialPLASTIC POLYAMIDE NYLON CHANNEL
nut_styleHEXAGON
nut_height0.328 INCHES MAXIMUM IN
lubricationSOLUBLE LUBRICANT
temp_rating250.0 FAHRENHEIT MAXIMUM DEGF
thread_class3B
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)
hardness_rating35.0 ROCKWELL C MAXIMUM
locking_featurePREVAILING TORQUE WITH NONMETALLIC INSERT
thread_directionRIGHT-HAND
countersink_angle88.0 DEGREES MINIMUM NUT
surface_treatmentCADMIUM AND CHROMATE NUT
NSN5310-00-275-2012
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MS20364-720A · 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
•
THREAD SERIES: UNF
•
NUT HEIGHT: 0.312 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 0.438 INCHES IN
•
THREAD QUANTITY PER INCH: 20
•
LOCKING FEATURE: PREVAILING TORQUE WITH NONMETALLIC INSERT
•
TEMP RATING: 250.0 FAHRENHEIT NOMINAL DEGF
•
WIDTH ACROSS FLATS: 0.625 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS3B
THREAD SERIESUNF
NUT HEIGHT0.312 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.438 INCHES IN
THREAD QUANTITY PER INCH20
LOCKING FEATUREPREVAILING TORQUE WITH NONMETALLIC INSERT
TEMP RATING250.0 FAHRENHEIT NOMINAL DEGF
WIDTH ACROSS FLATS0.625 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
MS20364-720Interchangeable
interchangeable cross-reference
interchangeable
F52NTE-070UInterchangeable
interchangeable cross-reference
interchangeable
MS21083N7Interchangeable
interchangeable cross-reference
interchangeable
503445Interchangeable
interchangeable cross-reference
interchangeable
21278Interchangeable
interchangeable cross-reference
interchangeable
50W3445Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS20364-720A?
MS20364-720A is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace MS20364-720A?
There are 12 known substitutes for MS20364-720A: MS20364-720, F52NTE-070U, MS21083N7 and 9 more. Substitute compatibility should be verified for your specific system.
Is MS20364-720A still available?
MS20364-720A is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026