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L140433 ✓ 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 WASHER,FLAT 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 5310-01-598-2790, 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
L140433
NSN: 5310-01-598-2790
FSC: 5310
CAGE: 0ADD7 — BAE SYSTEMS ADVANCED TECHNOLOGIES INC DBA BAE SYSTEMS AT (USA)
SPECIFICATIONS
Part NumberL140433
NSN5310-01-598-2790
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: L140433 · 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 5
30669Interchangeable
interchangeable cross-reference
interchangeable
28874Interchangeable
interchangeable cross-reference
interchangeable
L140433-12Interchangeable
interchangeable cross-reference
interchangeable
L140433Interchangeable
interchangeable cross-reference
interchangeable
L140433-14Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is L140433?
L140433 is a WASHER,FLAT.
What parts can replace L140433?
There are 5 known substitutes for L140433: 30669, 28874, L140433-12 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for L140433?
L140433 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-598-2790. 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