These Alligator anchors with flange nylon expand within a solid surface to help with distributing weight

3/4-16 x 5 1/2 Grade 8 Hex Cap Screw Yellow Zinc Plated

3/4-10 x 9 Hex Cap Screw SS 18-8 (A2)

#37 Heavy Duty Jobber Drill Bit

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M16-2.0 x 150 Hex Cap Screw 8.8 DIN 931 Zinc Plated 3/4-10 Socket Cap Screws 316 Stainless Steel These Alligator anchors with flangeM16 2. 0 x 150 Hex Cap Screw 8. 8 DIN 931 Zinc Plated Class 8. 8 Hex Cap Screws are manufactured from medium carbon steel, quenched and tempered. These are premium quality, medium strength fasteners with partially threaded shanks conforming to DIN 931.