Button head bolts ??? 3/8 and 5/16

[Stew Robertson]

I found the easiest way to get these bolts is to use countersunk flat heads ,make a deep countersink in a pc. of brass and weld the head up and round the head by spinning it in the lath ,or a drill chuck will work, then take your thin zip blade and put in the slot.
After making a few you can make them look like the real thing

[Ron Pier]

Richard, try a google search for the correct name 'Slotted round head machine screws'

Ron

[RichardT10829]

Found some none countersunk, however the heads are not quite the same shape.... Not really noticeable though ;-) I had made a few by putting threads onto rivets then cutting a slot into the head, they look identical to the originals.