SALE Quick view Thin Steel Jam Nuts Thin Steel Jam nuts have a smaller O.D. than the standard traditional Jam Nuts. These are lighter for the weight conscious racer.• 5/8" Nuts = 3/4" O.D.• 3/4" Nuts = 7/8" O.D. MSRP: Was: $1.49 Now: $0.75 Choose Options Compare