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Chapter 4: Hardware Requirements
Identifying Bolt Grades
Bolts are identified by grade (or hardness), the grade can be identified by the markings on the head of the
bolt. These markings will be in the form of slash marks and patterns. Use the following as a guide to
determine the correct bolt grade.
CAUTION
Under no condition can any other bolts be substituted for those supplied by GSI.
Grade 2 Bolts
Grade 2 bolts are designated with a plain head and are not used in GSI grain bins.
Grade 5 Bolts
Grade 5 bolts are designated by three slash marks on the head. All 5/16 in. diameter bolts
are to be grade 5 or higher.
Grade 8 Bolts
Grade 8 bolts are designated by six slash marks evenly spaced out around the head of the
bolt. All 3/8 in., 7/16 in. and 1/2 in. diameter bolts are to be grade 8 or grade 8.2.
Grade 8.2 Bolts
Grade 8.2 bolts are designated by six slash marks on the head in a sunrise pattern. All 3/8
in., 7/16 in. and 1/2 in. diameter bolts are to be grade 8 or grade 8.2.
PNEG-4936
36 Ft. TopDry Autoflow
37
Содержание TopDry Autoflow
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