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,LOCK is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System under NSN 5310-01-158-9217, 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
5310011721991
NSN:5310-01-158-9217 FSC:5310 CAGE:A00AM — E.C.A ETABLISSEMENT CENTRAL DES APPROVISIONNEMENTS DES FORCES ARMEES ROYALES
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FREQUENTLY ASKED QUESTIONS
What is 5310011721991?
5310011721991 is a WASHER,LOCK.
What parts can replace 5310011721991?
There are 8 known substitutes for 5310011721991: 78328, 820-4551178-3, 820-4551352PC 60 and 5 more. Substitute compatibility should be verified for your specific system.
Is 5310011721991 still available?
5310011721991 is currently cancelled.
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