25 pack of 4-40 x 1/4" Button Head Screws.
Commonly used in the Viper Lifter Add-On for attached the servo to the servo mounts and connecting the servo mounts to the chassis.
Thread Pitch: 4-40
Head Style: Button Head
Diameter: #4
Length: 1/4"
Finish: Black Oxide
Package Quantity: 25 Screws
Grade: Class 12.9
Material: Alloy Steel
Measurement Type: Inch
Thread Style: Fully Threaded
Thread: Coarse
Drive Size: 1/16" hex
