4-40 X 5/16″ Machine Screws Round Head Slotted Drive Steel Black Oxide (10000/Pkg.) Price Cut
Original price was: $185.46.$77.89Current price is: $77.89.
These machine screws are slotted and round, crafted from steel and finished with a black oxide coating for durability and a low-glare appearance. The size is 4-40 with a length of 5/16 inch, perfect for tight, precision assemblies.
Thread size: 4-40
Length: 5/16 in
Material: Steel
Finish: Black Oxide
Drive type: Slotted
These features combine to provide a reliable fastener option when you need a compact, durable screw for small machinery, electronics, or general hardware projects.





