Screw picket
![A soldier using a barbed wire anchor spike to screw in a picket at Fort Belvoir, Virginia (August, 1942)](/Images/godic/202502/09/lossy-page1-300px-Screw_picket_Fort_Belvoir.tif3517.jpg")
A screw picket is a metal device which is used to secure objects to the ground. Today, screw pickets are used widely to temporarily "picket" dogs. They are also used to graze animals such as sheep, goats, and horses. Screw pickets are also used to stabilize small trees, tent poles, and other objects that are intended to remain upright.