A challenge for engineers?
May 7, 2010 4:50 PM Subscribe
Can anyone identify this screw/bolt head and tell me what type of tool I need to remove it? The screw head has 5 radiating flanges/splines, with a raised central hub. It does not appear to be a (security) Torx head. Photos: bolt closup and bolt in situ. The bolt/screw in question is located in a Braun coffee grinder (model KMM30, 3045). The grinder was made in Mexico and sold in the USA.