#4-40 Black Stainless Steel Flat Head Socket Cap Screws
Screw Diameter - Thread Pitch: #4-40
#4-40 Flat Head Socket Cap Screws are machine screws with a Hex or Allen drive style.
- Clean and unstamped flat head with a countersunk bottom that runs flush with the installation surface
- Head height is measured from the bottom of the countersink to the top of the head
- Cylindrical head and hexagonal drive style
- Fully threaded up to the countersink
- Black Oxide adds an extra layer of corrosion and abrasion resistance
- Creates a sleek black look
These fasteners are chemically treated to create the back oxide finish and are finished with wax.
Sizes Listed As:
Diameter - Thread Pitch x Length from Top of Head