Narrow assembly situations. Although there are so many differences between external hexagonal bolts/screws and internal hexagonal bolts/screws, in order to meet more needs, we do not just use a single type of bolts/screws, but need a variety of fasteners and screws. Use together.
Read MoreExternal hexagonal bolts/screws: good self-pinching properties; large preload contact area and large preload force; full thread length range is wider; reamed holes can exist, which can fix the position of parts and withstand shear caused by lateral forces; head The inner hexagon is thinner than the......
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