The Hillman Group 59465 4 40 x 3/8 Inch Nylon Binder Head Machine Screw, 60 Pack

Fasten with a screwdriver to reduce the risk of over-tightening to protect the screw and fastened material If nuts are needed, use with nuts of the same finish and threading for proper fit Made of Nylon, Weight: 0.02 Pounds, Manufacturer: The Hillman Group