Self Tapping Screws
Standard: ASME B18.6.4&SAEJ81;DIN6901;DIN6928;DIN7971;DIN7972;DIN7973;DIN7976;DIN7981; DIN7982;DIN7983; DIN968
Size: #4(2.8)-1/2";ST2.2-ST8
Material: Carbon steel?C1018, C1022, CH2...Handan Daoning Fasteners Co.,Ltd.
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