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Bolts
A little
primer on bolts. Bolts fall into three general
categories:
Carriage Bolts
Machine Bolts
Stove Bolts
There are also
Specialty bolts,
and they add many more categories to the list
and ones designed for specific functions. Furthermore,
there are also a dozen kinds of nuts and at least four
kinds of washers. Each category of bolt, nut, and washer
has a specific type of use. The list is endless.
Machine bolts are general not used for framing
applications, they have hex or square shaped heads.
Neither are stove bolts, which have rounded heads with a
slot for a screwdriver. But carriage bolts,
which have unslotted oval heads, are used for attaching
structural lumber face-to-face or major timbers to
posts. Carriage bolts have a square shoulder just
beneath the head that digs into the wood as you tighten
the bolt, which prevents it from slipping and spinning
in the hold, and they are sized according to the
diameter of their shanks and their length. Most
heavy duty framing, for floors and decks utilize
carriage bolts.
Finally, one more bolt you may use is the Anchor
Bolt. The Anchor Bolt attaches the sill plate
to the top of a foundation of large storage sheds.
Wedge-type bolts and J-bolts are the
most common types of bolts used in anchor applications.
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