... 3).Material: carbon steel, stainless steel brass FR-N021-02 Insert bar,threaded machining part, threading barthreaded rod1).custom ... 321 304L 201 667 668 316 316L4).Grade:4.8 6.8 8.8 12.95).Finish: Plain, Black, ... Zinc Cr+3, Yellow Zinc Cr+6, H.D.G, etc.6).Packing: bulk, box packing, We accept OEM ... , mold designing and making etc. • FR-N021-02 Insert bar,threaded machining part, threading bar