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The difference between bolt and screw
- Sep 03, 2016 -

Structural difference between bolts and screws: bolts several style "head"; stud is no "head"; screw also has a variety of styles of "head".

But "head" structure is different from bolt head for hex top, large screws "head" are generally with fastening slots (slotted, cruciform), such as hex, hand tighten the screw in the "head" roll patterns, which made screws of smaller sizes.

Difference between bolt and screw on the application: bolts and nuts should be used for through-hole, easy to replace after damage; use with studs and nuts, a single connection, and more for blind holes, tools with a wrench, and connector frequently disassembled.