Hex Socket Mushroom Head Screws Black Galvanization Grade 10.9 12.9 Gallery Hex Socket Mushroom Head Screws Black Galvanization Grade 10.9 12.9 Cold Forming Hex Socket Mushroom Head Screws Black Galvanization Grade 10.9 12.9 Ric Sun2020-09-18T19:43:22-07:00 Hex socket mushroom head screws are commonly found on automobiles, motorcycles, bicycle brake systems (disc brakes), hard disk [...] Hex Socket Mushroom Head Screws Black Galvanization Grade 10.9 12.9Ric Sun2020-09-18T19:43:22-07:00