Cone bolts

David Da Costa · Post by **David Da Costa** » Fri Dec 11, 2009 2:56 pm

I think I am probably going to end up making my own cone head bolts on my CNC lathe, so does anyone have the dimension of the cone (diameter, cone angle etc) Are they all the same size?

Also can anyone tell me why cone headed bolts were used on the German tanks?

Thanks again

David

Brian Leach · Post by **Brian Leach** » Fri Dec 11, 2009 4:12 pm

Because they are stranded here from the planet Remulak

Brian

Sorry guys, I couldn't help myself.
It'll never happen again (another lie).

B

David Da Costa · Post by **David Da Costa** » Fri Dec 11, 2009 4:16 pm

colin fairweather · Post by **colin fairweather** » Fri Dec 11, 2009 7:22 pm

hi david

the coneheads are that shape to deflect small and large calliber rounds if a round hit a flat head bolt it could push it through the hull i dont think the crew would be too happy

also if bolt heads were blown off the tank would fall apart

if you look at drawings they are all at strategic points

taking angles off drawings it looks like they are roughly at 40 degrees ?

their are two types 5 small on the hull back plate and 2 under the turret pistol ports in scale these are about 4mm - 4.5mm wide ?

the rest are large about 5mm - 5.5mm ?

lads please correct me if i'm wronge

regards

colin

David Da Costa · Post by **David Da Costa** » Fri Dec 11, 2009 7:29 pm

Thanks for the info Colin.

David

Stephen White · Post by **Stephen White** » Mon Dec 14, 2009 9:00 am

David

I've found some old notes I took from measuring the Bovington Pz III. The smaller cone head bolts were 33.27mm in diameter and 19.00mm in height. The latter measurement is the distance from the top of the cone to the plate surface.

Hope this helps.

Stephen

David Da Costa · Post by **David Da Costa** » Mon Dec 14, 2009 3:05 pm

Thanks Stephen.