[RPG] Do touch spells crit via a natural weapon’s crit range

pathfinder-1espellstouch-attacks

If I increase the threat of my natural weapon (improved crit) (19-20) does this affect my touch spell cast through it?

Pg 213: A touch spell that deals damage can score a critical hit just as a weapon can. A touch spell threatens a critical on a 20 and deals double damage….
pg 186:…. Alternatively, you can make a normal unarmed attack (or attack with a natural weapon)while hold the charge…..If the attack hits you deal normal damage for your unarmed attack or natural weapon and the spell discharges.

What does "score a critical hit just as a weapon can" mean? does this and "If the attack hits you deal normal damage" mean that the crit threat is changed?

Best Answer

No.

For that, you would want to take Improved Critical specifically for your melee touch spells.