which can be any number you see fit for your job

Intercorp Strong-Point® framing screws are designed to attach 20 gauge metal track to 20 gauge metal studs

Alloy Flat Socket Head Cap Screws from Brighton Best

2-4 1/2 x 18 Socket Cap Screw Alloy

5/8-11 x 8 1/2 STRONG-BOLT® 2 Cracked and Uncracked Concrete Wedge Anchor Zinc Plated (20)

M20-2.50 x 55 Socket Set Screw Cup Point DIN 916 Black Oxide Alloy Grade 2 Finished Hex Nuts Zinc Plated which can be any numberM20 2. 50 x 55 Socket Set Screw Cup Point DIN 916 Black Oxide Alloy . A headless screw threaded the entire length. It has a hexagonal drive at one end and a cup shaped indentation at the other end. The cup point is the most used style set screw. Designed for fast, permanent and semi permanent location of parts on shafts with hardness differential of 10 15 Rockwell C points and where cutting in of cup edge on the shaft is acceptable. Hardness: Rockwell