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PartsTable / COMPONENT / MS20066-540
MS20066-540 ✓ 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 KEY,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, overall_width: 0.500 INCHES NOMINAL IN, overall_height: 0.501 INCHES NOMINAL IN, overall_length: 1.7500 INCHES NOMINAL IN, style_designator: PLAIN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-01-411-6433, 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
MS20066-540
NSN: 5315-01-411-6433
FSC: 5315
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL OVERALL
overall_width0.500 INCHES NOMINAL IN
overall_height0.501 INCHES NOMINAL IN
overall_length1.7500 INCHES NOMINAL IN
style_designatorPLAIN
NSN5315-01-411-6433
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MS20066-540 · 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
•
MATERIAL: STEEL OVERALL
•
STYLE DESIGNATOR: PLAIN
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH1.7500 INCHES NOMINAL IN
OVERALL WIDTH0.500 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
OVERALL HEIGHT0.501 INCHES NOMINAL IN
STYLE DESIGNATORPLAIN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
10-419-2Interchangeable
interchangeable cross-reference
interchangeable
1024-2Interchangeable
interchangeable cross-reference
interchangeable
140-1024-02-01-00Interchangeable
interchangeable cross-reference
interchangeable
14039119Interchangeable
interchangeable cross-reference
interchangeable
15635678Interchangeable
interchangeable cross-reference
interchangeable
85822Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS20066-540?
MS20066-540 is a KEY,MACHINE.
What parts can replace MS20066-540?
There are 6 known substitutes for MS20066-540: 10-419-2, 1024-2, 140-1024-02-01-00 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS20066-540?
MS20066-540 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-01-411-6433. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026