On 17 June, 12:07, Andy Dingley wrote:
On 17 June, 08:43, sm_jamieson wrote:

Whats the name (i.e. internet search term) for those bolts with a
slotted pan head.

"Stove bolts" - usually with square nuts.

They're dirt cheap and everyone ought to stock up on a few mixed
bagfuls (M5, M6, M8, M10) from Toolstation, along with mixed washers.
Just the ticket when the handle falls off the dog, or the wheel's off
your wheelbarrow.

For hinges, I generally prefer coach bolts as a minimum (many tee
hinges have square holes) and use shear-off conical nuts to lock them,
often with a spot of MIG weld too. As a quick hack for the same, rivet
the ends over a little with a ball pein hammer. Be warned that many of
these zinced stove bolts are also very lax tolerances and they might
not remain tight in service.

They are called roofing bolts in toolstation.
A cross head on the outside, square bolt on the inside. I'd lock with
an extra
nut on the inside. I was going to replace all the screws (6 per hinge)
with M6 bolts but I could drill a couple of larger holes for larger
bolts.
Coach bolts would need a square hole, so no good there.
Cheers,
Simon.