Hammer Drive #12 5.38mm x 12 Yp Stl Grvd

Hammer Drive
Yellow Passivated
Size: #12 (5.38mm)
Length: 12mm
Drill Size: 4.85mm
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