Dome head countersunk screws

[dmdeaton]

Where to purchase some? 26/27 open car dash panel screws. Don’t see them on the vendors sites. These need to be correct as they are in your face all the time. Cannot have tacky modern fasteners there.

[Henry K. Lee]

the "Bolt Depot".

Hank

[Humblej]

Correct name is oval head screw.

[DanTreace]

Lang’s cat. # 671, nickel plated correct oval head machine screws and square nuts. $2.95 set. SS ones from other sources like Restorationstuff.com look like nickel when buffed on a wheel and won’t tarnish.

[Allan]

They are known as oval head screws in the USA, but they are raised head countersunk or dome head countersunk screws. They are neither oval in plan view or in cross section, but if enough people get it wrong, it becomes the established norm.
Early horse drawn vehicles had large square axle nuts and the wrenches made for them resembled a box. When hexagonal nuts became the norm, 6 and 12 point wrenches also became known as box wrenches, rather than the more descriptive ring spanner used in other English speaking countries.

Allan from down under.

[DanTreace]

Allan

Correct on that, here in the USA we always refer as oval head. There are smaller versions known as trim oval, bit flatter on the oval and countersunk.
The oval head are correct for Ford metal dash screw depressions, and metal switch** panel depressions.

** Except the early 1919 switch panels on wood dash, those got "French" head wood screws. Similar oval type head.

Image 2-10-21 at 10.22 PM.jpeg (21.52 KiB) Viewed 1260 times

[Allan]

Dan, here your filllister heads are called cheese head, which is descriptive of a maturing round of cheese. If we went to a descriptive name for your non-oval heads, they could be called cupcake heads, rounded on top, tapered underneath.

Allan from down under.