PART NO.  SPL.PAGE  DESCRIPTION                                                           
51K245    sup.1     Stud -cylinder head -long (4) -(block assy, engine unit, sup)
51K245    16.A.1    Stud -cylinder head -long (4) -(block assy, engine unit, 1600)
51K245    16.A.21   Stud -cylinder head (long) (4) -(block assy, engine unit, 1622)
51K246    15.A.1    Stud for cylinder head (short) -(block assy, engine unit, 1500)
51K246    sup.1     Stud -cylinder head -short (7) -(block assy, engine unit, sup)
51K246    16.A.1    Stud for cylinder head (short) (7) -(block assy, engine unit, 1600)
51K246    16.A.21   Stud -cylinder head (short) (7) -(block assy, engine unit, 1622)

51K245 - Stud -cylinder head -long (4) -(block assy, engine unit, 1500, 1600, 1622, 1800)
Length: 6-1/4"
Top end thread 3/8-24-UNF x 7/8"
Bottom end thread: 3/8-16-UNC x9/16"

High Strengthg Stud

Alternate part numbers:51K281, 328-980