Minimum: 3

Lag screws longer than 12 inches will have a minimum thread length of 50% of the screw length up to a maximum of 8 inches

FMW Fasteners will send you your Alligator anchors quickly and without hassle

3-4 A194 2H Heavy Hex Nut Plain

5/32 Cobalt Heavy Duty Jobber Drill Bit (12) A563 Grade A Heavy Hex Nuts Plain Minimum: 35 32 Cobalt Heavy Duty Jobber Drill Bit . Heavy duty construction made to Type J aircraft specifications. Used for drilling holes in hard, tough materials such as stainless steel, titanium, high temperature and high strength alloys. High red hardness of cobalt permits speeds 30% greater than standard heavy duty split point (HSS) drills.