#
# description of a screw
#

void metal screw_mat
0
0
5 .709 .709 .709 .7 0

screw_mat cone screw
0
0
8
	0	0	0
	0	.005	0
	.03	.025

screw_mat ring screw_top
0
0
8
	0	.005	0
	0	1	0
	0	.025
