1 1/4-12 x 7 Socket Cap Screw Alloy

9/64 Heavy Duty Drill Bit - Stubby Length

#1 x 6 High Speed Aircraft Bit Cobalt

1-8 x 6 Simpson Wedge Anchor 303 SS (5)

Plastic plug bonds through friction to concrete

5/8 L9 SAE Tension Flatwasher Yellow Zinc Plated Domestic USA (50) Finished Hex Nuts 18-8 Stainless Steel 1 1/4-12 x 7 Socket5 8 L9 SAE Tension Flatwasher Yellow Zinc Plated Domestic USA (50) . L9 High Tension SAE 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.