http://www.boltingsystem.info Bolting System for Mining, Tunneling and Construction Industries Tue, 06 May 2008 09:37:29 +0000 http://backend.userland.com/rss092 en Expansion shell bolts Reinforced expansion shell bolts are designed to be used for roof and ribs support in mine working areas as an independent or secondary bolting support system. They are also used for the attachment of various components of mining equipment. Bolt rods are made of plain AP 600 steel bar ... http://www.boltingsystem.info/?p=6 Fasteners with a tapered shaft (tapping screws) “Screw” - There is not a universally accepted definition of the word, “screw”. It generally refers to a smaller threaded fastener with a tapered shaft. Wood Screw – Generally has an un-threaded portion of the shaft below the head. It is designed to attach two ... http://www.boltingsystem.info/?p=4 Here are some other types of threaded fasteners Thread rolling screws - have a lobed (usually triangular) cross section. They form threads by pushing outward during installation. They may have tapping threads or machine threads. Superbolt, or Multi-Jackbolt Tensioner Alternative type of fastener that retrofits or replaces existing nuts, bolts, or studs. ... http://www.boltingsystem.info/?p=1 Fasteners with a non-tapered shaft Bolt - There is not a universally accepted definition of the word, “bolt”. It generally refers to a larger threaded fastener with a non-tapered shaft. Cap Screw (Hex Bolt) – In places the term is used interchangeably with bolt. In the past the term, “cap screw” was ... http://www.boltingsystem.info/?p=3