4-40 x 3/8 Slotted Pan Thread Cutting Screw Type F Fully Threaded Zinc 5 It has a #3 head

It has a #3 head and a Grade 5 strength rating

25 x 35 DIN 6921 8

while the external sems threads allow for easy installation into pre-tapped holes

The 10-32 x 3/4 Unslotted Indented Hex Head Machine Screw Fully Threaded 18-8 Stainless Steel is a versatile and durable fastener designed for a wide range of applications

4-40 x 3/8 Slotted Pan Thread Cutting Screw Type F Fully Threaded Zinc 5 It has a #3 head4 40 x 3 8 Slotted Pan Thread Cutting Screw Type F Fully Threaded Zinc: This screw is made of steel and has a zinc coating for corrosion resistance. It has a slotted drive and a pan head. The thread cutting screw is designed to create its own threads as it is driven into a material. It is fully threaded, meaning that the threads extend the entire length of the screw. This screw is commonly used in metal applications.