#4-40 Flat Head Socket Cap Screws are machine screws with a Hex drive style.
- Countersunk bottom that runs flush with the installation surface
- Cylindrical head
- Hexagonal drive style
- Fully threaded up to the countersink
- Corrosion and rust resistant
- Ideal for exterior or long lasting applications exposed to fresh water moisture
Head height is measured from the bottom of the countersink to the top of the head
Sizes Listed As:
Diameter - Thread Pitch x Length from Top of Head