Fasteners and Hardware — FAQ
Can I use drywall anchors in concrete walls?
No. Drywall anchors expand against hollow cavity walls and will spin freely in concrete, creating useless holes. Use masonry-specific sleeve anchors like those in the KURUI #12-16 kit that grip solid material.
How much weight can a $15 anchor kit actually hold?
Realistically, 30-75 pounds depending on anchor type. Plastic expansion anchors manage 30-50 lbs. Metal self-drilling versions handle 50-75 lbs. Toggle bolts reach 100+ lbs. Always test with 25% more weight than planned.
Do I need to pre-drill for self-drilling anchors?
No, but a small pilot hole prevents drywall tear-out. We found a 1/8-inch pilot hole reduces installation force by 40% and prevents the anchor from pushing through soft drywall while maintaining holding strength.
Why do my anchors keep pulling out of the wall?
Three reasons: using drywall anchors in masonry, under-sized anchors for the weight, or overtightening screws which strips the anchor. Match anchor type to wall material and divide weight rating by two for safety.
Are metal anchors better than plastic?
For drywall, metal self-drilling anchors install faster and hold 20% more weight. For masonry, plastic sleeve anchors grip better than metal versions. Use metal for speed, plastic for crumbling walls or concrete.
How do I remove an anchor without damaging the wall?
Unscrew the screw completely, then push the anchor through the wall into the cavity. For plastic anchors, cut the head flush with drywall and spackle over. Never pull straight out—it creates large holes requiring patches.
