Hammer Drive #4 2.95mm x 5 Yp Stl Grvd

Hammer Drive
Yellow Passivated
Size: #4 (2.95mm)
Length: 5mm
Drill Size: 2.65mm
Hammer drive screws, also known as U-drive screws, are unslotted fasteners with high-helix threads designed to be driven into pre-drilled holes using a hammer or mallet. They are primarily used for permanent, tamper-resistant attachments, such as securing nameplates to castings or sealing drain holes