V8 Water Pump Bolts from a '93 5.8L
The 2 left bolts (right in the pic) and 2 others (above & below the other journal) have 5/8" heads. The other 3 have 1/2" heads. These were all wirewheeled, thread-chased (including the block/TC threads), and painted Duplicolor New Ford Gray. The long ones going into the block have anti-seize on the threads, and will have blue threadlocker (as a sealant) under their heads.
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The bolts for a '96 are slightly different:
The old-style oil pressure sender is on a factory (older) extension.
The 1-piece nitrile oil pan gasket is attached with stock bolts & pan lip reinforcement plates.