Champion Machine Screws 6/40 x 1 SKU: 226139 MODEL: BS0842 Error. try again later You've successfully joined the club $ 6 .40 pack of 20 Available on orders $50 to $1500. More info × Mitre 10 MAvailable at Mitre 10 MEGA stores. Variants Fully threaded. Features and benefits Round head. Slotted drive. Fine thread. Nickel Plated.