1/2 x 12 High Speed Long Boy

also known as “butterfly anchors

#25 Heavy Duty Drill Bit - Stubby Length

7/8-9 x 6 Simpson Wedge Anchor 304 SS (5)

3/4-10 x 7 1/2 Hex Cap Screw SS 316 (A4)

1 1/4 L9 USS Tension Flatwasher Yellow Zinc Plated Domestic USA (12) 5/8-18 Socket Cap Screws Alloy 1/2 x 12 High Speed1 1 4 L9 USS Tension Flatwasher Yellow Zinc Plated Domestic USA (12) . 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.