Head Diameter: 7.2mm / 0.28"; Product Name: Self Tapping Screw; Package Content: 150(+/-2%)pcs x Self Tapping Screw Main Color: Silver Tone; Material: 304 Stainless Steel Weight: 156g; Head Style: Pan Head Thread Size: M4 x 12mm / 0.16" x 0.47"(D * L); Drive Type: Phillips Fastener Type: Self Tapping Screws; Total Length: 14mm / 0.55" Designed with Phillips Round Pan head,self-tapping screws and 316 Stainless Steel material.
Sheet metal screws have sharp threads that cut into a material such as sheet metal, plastic or wood.
They also make excellent fasteners for attaching metal hardware to wood because the fully threaded shank provides good retention in wood.
Can be used for air conditioner.