Features: Size: M1/1.2/1.4/1.7 screws with matching cross nuts lock washers and flat washers which can meet your different needs. Material: Stainless steel material which have good corrosion resistance in bad environment like high temperature cold weather and high humidity areas. Thus the screw set can serve you for a long time. Package: 1000 pieces in total packed in a durable transparent box. It is easy to distinguish the size of the product when you want to use a certain screw. Wide Applications: Widely used in all kinds of precision machinery industry classified instruments instruments electronic products printed projects household appliances communication products. Long Service Life: The installation parts can be used continuously bear strong load and have a long service life. Specifications: Material: Stainless steel Product Quantity: 1000pcs Surface Treatment: Untreated Application: Widely used in electronic equipment and glasses maintenance. includes: 100PCS*M1*3mm 100PCS*M1*4mm 100PCS*M1*5mm 100PCS*M1.2*3mm 100PCS*M1.2*4mm 100PCS*M1.2*5mm 100PCS*M1.4*3mm 100PCS*M1.4*5mm 100PCS*M1.7*5mm 100PCS*M1.7*6mm "