6 x 3/8 Round Head Type U Drive Screw Zinc APU188 and the Grade 5 rating

and the Grade 5 rating indicates its high strength

These 4-24 x 3/4" Phillips Full Contour Truss Self Tapping Screw Type AB Fully Threaded Zinc screws are designed for use in truss applications

The 4-24 x 1 Slotted Pan Self Tapping Screw Type AB Fully Threaded Zinc is a versatile and durable screw designed for a wide range of applications

Its slotted drive allows for easy installation and removal using a standard flat-head screwdriver

It is designed to be used with a 5/8-inch nut and washer

6 x 3/8 Round Head Type U Drive Screw Zinc APU188 and the Grade 5 ratingThese 6 x 3 8 Round Head Type U Drive Screws are made of zinc plated steel for durability and resistance to corrosion. They have a round head with a slotted drive and a sharp point for easy penetration. These screws are ideal for a variety of applications, including fastening sheet metal, plastic, and wood. They are also commonly used in automotive, marine, and construction applications.