... HUIFENG SCREWS MAKING CO.,LTD is a professional screw maker in northern china with more than 20 ... tons one year with 150sets of heading and rolling machine, 3 belt of heattreat ments furnace, 2 belt ... 2013! SELFTAPPING SCREW CROSS AND SLOT COMPSITE RECESS PAN HEAD DIN 7981HEAD TYPE: PAN HEAD, CSK HEAD, RAISED HEAD, OVAL HEAD, CHEESE HEAD MODEL TYPE ... 8*254.8*324.8*384.8*454.8*50 5.5*195.5*225.5*255.5* ...