Jina la bidhaa DIN 912 Cylindrical Socket Cap Screw/Allen bolt
Kawaida DIN912, GB70
Daraja la Chuma: DIN: Gr.8.8, 10.9, 12.9;SAE: Gr.5, 8;
Zinki ya Kumaliza(Njano, Nyeupe, Bluu, Nyeusi), Hop Dip Iliyotiwa Mabati(HDG), Oksidi Nyeusi, Geomet, Dacroment