From The Anvil Screw on Staple Arrow Head 33304/1
Screw on Staple Arrow Head 33304/1.
Also know as screw on staple
This is for use when a spike staple pin is too long and may damage the door. The screw on staple still allows the latch bar to travel within it.
All screws supplied
Size 4.375 inches x 0.625 inches 112mm x 16mm