GPM item LN5L - Aluminium 5mm Flanged Lock Nuts-8pcs GPM has released Aluminium 5mm Flanged Lock Nuts-8pcs under category GPM made Aluminium 5mm Flanged Lock Nuts-8pcs (LN5L) Aluminium 5mm Flanged Lock Nuts-8pcs - GPM LN5L Aluminum flanged 5mm lock peanuts of securing design for greater durability.