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Technical Data Sheet
PartsTable / COMPONENT / 40214ADX
40214ADX ✓ 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 SQUARE KEY is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-01-387-3700, 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
40214ADX
NSN: 5315-01-387-3700
FSC: 5315
CAGE: 1VN02 — AIRDALE EXPRESS LLC DIV AIRDALE EXPRESS (USA)
SPECIFICATIONS
Part Number40214ADX
NSN5315-01-387-3700
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 40214ADX · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
52117Interchangeable
interchangeable cross-reference
interchangeable
717-000814Interchangeable
interchangeable cross-reference
interchangeable
40214Interchangeable
interchangeable cross-reference
interchangeable
59066D71-100Interchangeable
interchangeable cross-reference
interchangeable
N372-1PC911Interchangeable
interchangeable cross-reference
interchangeable
K-1103 CAT N0 8Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 40214ADX?
40214ADX is a SQUARE KEY.
What parts can replace 40214ADX?
There are 11 known substitutes for 40214ADX: 52117, 717-000814, 40214 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 40214ADX?
40214ADX is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-01-387-3700. 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