These are Socket Head Sheet Metal Screws by DU-BRO.
- Steel construction.
- Coarse threads designed to grab onto relatively thin sheet metal.
- Cap head with a hex drive insert.
- Uses a 3/32" ball driver.
- Length: 1" (25mm)
- Diameter: 4mm
Used with permission, copyright 2018 Dubro RC/Tower Hobbies, Inc. Copyright 2018 Brey Corp. t/a Hobby Works.