Image 1 of 1 SS Heavy Jam Nuts - 1/2 x 13 $5.66 SS Heavy Jam Nuts - 1/2 x 13 Quantity: Add To Cart Added! SS Heavy Jam Nuts - 1/2 x 13 You Might Also Like Quick View Sierra Thrust Washer OMC $29.99 Quick View Bronze Heavy Full Nut - 2-1/2" x 4 $306.00 Quick View Stainless Steel Lock Nut Jam - 1-3/4 x 5 $33.25 Quick View PN- 3&4 Brass Propeller Nut Kit $46.08 Quick View Galvanized Nylon Locknut 45mm x 3 $120.00