Using new hardware makes any job more pleasant. If you're servicing your cylinder head you should examine the rocker studs for signs of stretching or stripped threads. Two long (51K885) and two short (51K1473) per head.
This is 5/16"unc with other end unf for nut and is 3"long.
ALSO USED FOR ROD CHANGE GEARBOX TO DIFF HOUSING TO CASE
For use on Diff housing.
Remote type case.
53K266 are 4.5" long -4 for remote now use TAM1617.
53K1471 are 3"long 5/16"unc x3 or use 51K885.
Rod change gearbox used 22G1834 are 4.5" long 3/8"unc with 0.375" thread rod change only x2-use 51K282.
CHS2624 are 3."long 3/8"with 0.250"thread x 3 or use BH506181 bolt.