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PartsTable / COMPONENT / 2640-682-10 ITEM 45
2640-682-10 ITEM 45 ✓ 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. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-479-5249, 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
2640-682-10 ITEM 45
NSN: 5310-01-479-5249
FSC: 5310
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)
SPECIFICATIONS
Part Number2640-682-10 ITEM 45
NSN5310-01-479-5249
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 2640-682-10 ITEM 45 · 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 18
MS17829-6CMODInterchangeable
interchangeable cross-reference
interchangeable
MS17829-6C(MOD/VESPEL INSERT)Interchangeable
interchangeable cross-reference
interchangeable
NASM17829Interchangeable
interchangeable cross-reference
interchangeable
MS17829Interchangeable
interchangeable cross-reference
interchangeable
MS17829-6C(MOD)Interchangeable
interchangeable cross-reference
interchangeable
665-6985871PN135Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2640-682-10 ITEM 45?
2640-682-10 ITEM 45 is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace 2640-682-10 ITEM 45?
There are 18 known substitutes for 2640-682-10 ITEM 45: MS17829-6CMOD, MS17829-6C(MOD/VESPEL INSERT), NASM17829 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2640-682-10 ITEM 45?
2640-682-10 ITEM 45 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-479-5249. 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