PART NO.  SPL.PAGE  DESCRIPTION                                                           
51K881    15.A.5    Stud for rocker bracket (short)(2) -(engine unit, 1500)
51K881    sup.5     Stud -rocker bracket -short (2) -(engine unit, sup)
51K881    16.A.5    Stud -rocker bracket -short (2) -(engine unit, 1600)
51K881    16.A.26   Stud -rocker bracket -short (2) -(engine unit, 1622)
51K893    15.A.5    Stud for rocker bracket (long) (2) -(cyl.head, engine unit, 1500)
51K893    sup.5     Stud -rocker bracket -long (2) -(cyl.head, engine unit, sup)
51K893    16.A.5    Stud -rocker bracket -long (2) -(cyl.head, engine unit, 1600)
51K893    16.A.26   Stud -rocker bracket -long (2) -(cyl.head, engine unit, 1622)

51K881 - Stud - for rocker bracket (short) (2) -(cyl.head1500, 1600, 1622, 1800)
Length:3-1/8"
Top end thread: 5/16-24-UNF x 3/4"
Bottom end thread: 5/16-18-UNC x 1/2"

High Strength Stud

Alternate part numbers: 328-970