Replacing front anchor bolts on commode. Home › Forums › Public Forums › Drainage & Sewerage › Replacing front anchor bolts on commode. This topic has 1 reply, 2 voices, and was last updated 24 years, 2 months ago by SylvanLMP. Viewing 1 reply thread Author Posts 5 Sep 2000 at 6:48 pm #278662 Anonymous The front anchor bolts rusted away completely at tile floor level. I have drilled out the stubs and created sub-floor cavities. What material should I use to fill the cavities and into which I can place the new front anchor bolts? 5 Sep 2000 at 8:22 pm #298991 SylvanLMPParticipant Try lead anchors with either stainless steel or brass bolts Author Posts Viewing 1 reply thread You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In