/usr/share/xfig/Libraries/Fasteners/Bolts/ is in xfig-libs 1:3.2.5.c-1ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/xfig/Libraries/Fasteners/Bolts/Hexhead_Shld_bolt.fig
/usr/share/xfig/Libraries/Fasteners/Bolts/Hexhead_bolt.fig
/usr/share/xfig/Libraries/Fasteners/Bolts/Panhead_Phillips_bolt.fig
/usr/share/xfig/Libraries/Fasteners/Bolts/Panhead_Shld_Slotted_bolt.fig
/usr/share/xfig/Libraries/Fasteners/Bolts/Panhead_Shld_bolt.fig
/usr/share/xfig/Libraries/Fasteners/Bolts/Panhead_Slotted_bolt.fig
/usr/share/xfig/Libraries/Fasteners/Bolts/Panhead_bolt.fig
/usr/share/xfig/Libraries/Fasteners/Bolts/Roundhead_Shld_Slotted_bolt.fig
/usr/share/xfig/Libraries/Fasteners/Bolts/Roundhead_Shld_bolt.fig
/usr/share/xfig/Libraries/Fasteners/Bolts/Roundhead_Slotted_bolt.fig
/usr/share/xfig/Libraries/Fasteners/Bolts/Roundhead_bolt.fig