Since the anchor is pre-expanded

no pre-drilling is required - the anchor is inserted through the fixture and screwed in with an ordinary Phillips screwdriver

5/8-11 x 6 1/2 Flat Socket Cap Screw Alloy

6 x 2 1/4 Phillips Bugle Hi-Low Drywall Screws Phosphate Coated - Carton (3000)

1/2-20 x 3 Socket Cap Screw 18-8 (A2) Stainless Steel

5/8-11 x 4 1/2 STRONG-BOLT® 2 Cracked and Uncracked Concrete Wedge Anchor Zinc Plated (20) 5/8-11 Socket Cap Screws 316 Stainless Steel Since the anchor is pre-expanded5 8 11 x 4 1 2 STRONG BOLT 2 Cracked and Uncracked Concrete Wedge Anchor Zinc Plated (20) . Category 1 anchor classification: The Strong Bolt 2 anchor received classification as a Category 1 anchor, which is established by performance in reliability tests in accordance with AC193 and ACI355. 2 test criteria. Category 1 is the highest attainable anchor category for reliability. Tri segmented clip: Each segment adjusts independently, increasing follow