Why is there a cap on the end of the tack applicator?
Tack applicator cap usage. [Screw & Tack Kit related article]
The cap that comes with the tack applicator (regular version or offset version) is used to protect the tip from bending or opening during sterilization. Keeping the cap in place during sterilization ensures the applicator fits perfectly over the tack head and engages it when picking it up.
The cap is also handy for tacks that do not fully seat. Put the tack applicator cap on and apply pressure against the head of the tack to get it fully seated.