It functions as an expansion anchor in solid walls and in wooden studs

1/4 x 1 1/2 Phillips Pan Wall-Dog™ Light Duty Anchors White - Box (100)

1 1/4-7 x 8 Socket Cap Screw Alloy

1 1/8-7 x 13 Socket Cap Screw Alloy

#25 Heavy Duty Jobber Drill Bit

7/8 L9 USS Tension Flatwasher Yellow Zinc Plated Domestic USA (350) 9/16-18 Hex Cap Screws 18-8 Stainless Steel It functions as an expansion7 8 L9 USS Tension Flatwasher Yellow Zinc Plated Domestic USA (350) . L9 High Tension USS pattern flat washers are designed for use in high stress, severe service environments. The highest mechanical strength off the shelf fastening system available, its special features control torque tension characteristics to develop high clamp loads when using properly controlled tightening methods.