3/8 x 2 1/2 Titen HD Concrete Anchor Zinc Plated (50)

round head split anchor

5/16 Cobalt Heavy Duty Jobber Drill Bit

#13 Heavy Duty Jobber Drill Bit

21/64 Heavy Duty Drill Bit - Stubby Length

12 x 2 Simpson Flat-Head Self-Drilling Screw w/ Wings - Square Drive 410 SS - Box (100) Flat Washers Silicon Bronze 3/8 x 2 1/2 Titen12 x 2 Simpson Flat Head Self Drilling Screw w Wings Square Drive 410 SS Box (100) . Fasten wood, plywood and fiber cement to heavier steel up to . 209" thick #3 square drive Machine screw thread, threaded full length 2 1 2" length for 2 x 4 wood header; 2" length for 1" and 3 4" boards Flat countersunk head with self countersinking nibs Shank slot enhances thread formation in steel and removes exhaust Wings above drill point provide clearance hole in