Features: These pan head screws are great to use in confined areas where the head needs to be flush or below the surface. Screws have sharp threads that cut into a material such as soft metal sheet, plastic or wood. There are eight common lengths from 4mm to 20mmin this set for general purpose use. Well packed and assorted in a resealable transparent box for convenient storage and carry. Used widely in energy, electronics, electrical appliances, machinery, chemical, metallurgy, mold, hydraulic and other industries. Specifications: Material: Nickel-plated carbon steel Thread specification: M2 Thread tolerance: 5g Model: pan Head Self-Tapping Box Size: 13 x 6.5 x 2.5cm / 5.1 x 2.6 x 0.98inch Size and Quantity: M2*4mm 100pcs M2*5mm 100pcs M2*6mm 100pcs M2*8mm 100pcs M2*10mm 100pcs M2*12mm 100pcs M2*16mm 100pcs M2*20mm 100pcs Package Included: 800pcs x Pan Head Self-tapping Screws