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 664880 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 5310-00-073-2165, 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
664880
NSN:5310-00-073-2165 FSC:5310 CAGE:12603 — CLARK EQUIPMENT CO (USA)
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FREQUENTLY ASKED QUESTIONS
What is 664880?
664880 is a 664880.
What parts can replace 664880?
There are 16 known substitutes for 664880: 3321, 405H, A1226 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 664880?
664880 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-073-2165. This indicates validated use in U.S. government and defense supply chains.
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