and the jaws open to a lock position when the screw is inserted

3/4-10 x 8 Hex Cap Screw SS 316 (A4)

You can utilize these pieces of hardware in solid or hollow surfaces

7 x 2 1/4 Simpson Trim-Head Self-Drilling Siding Screw - Square Drive 410 SS - Carton (1000)

(SP®) SNAPSKRU® Anchor (No Screws)

9/16 x 18 Ship Auger Wood Bit Reduced Shank Drill Bits - 1/2 Shank and the jaws open to9 16 x 18 Ship Auger Wood Bit . Ship Auger Wood Drill Bits are heat treated with machine ground hollows. Feature a single twist with a single cutter and side lip. Made of premium steel, imported from France, Ship Auger Wood Drill Bits are ideal for boring CCA and creosoted poles, railroad ties, bulkheads and other heavy timber.