Grain Systems Tanks PNEG-1095 - Manual (Page 31)

5. Foundations
PNEG-1095 FCDL 4.00" Corrugation Externally Stiffened Grain Bin 31
Hardware
Identifying Bolt Grades
NOTE: Do not tighten bolts to exceed the torque specifications listed below.
Hardware Usage
20 Gauge - 15 gauge sidewall sheets, use 5/16" x 3/4" bolts and nuts. (S-275) [44 pcs.]
14 Gauge sidewall sheets, use 5/16" x 3/4" bolts and nuts. (S-275) [66 pcs.]
13 Gauge - 8 gauge sidewall sheets, use 3/8" x 1" bolts and nuts. (S-455) [66 pcs.]
Use 5/16" bolts and nuts when joining 13 gauge to 12 gauge on horizontal seams.
Use 5/16" x 1-1/4" (S-277) for attaching floor flashing to the sidewall.
Bolt Size
Torque (ft. lbs.)
Minimum Maximum
5/16"-18 15 20
3/8"-16 35 42
7/16"-14 65 72
1/2"-13 95 105
CAUTION
Under no condition shall any other bolts be substituted for those supplied by
the manufacturer.
Grade 2 Bolts
1. Grade 2 bolts are designated with a plain head. Grade 2 bolts will not be used in this grain bin.
Grade 5 Bolts
2. Grade 5 bolts are designated by three (3) slash marks on the head. All 5/16" diameter bolts
are to be grade 5 or higher.
Grade 8 Bolts
3. Grade 8 bolts are designated by six (6) slash marks evenly spaced on the head.
Grade 8.2 Bolts
4. Grade 8.2 bolts are designated by six (6) slash marks on the head in a sunrise pattern.
All 3/8" diameter bolts are to be grade 8 or 8.2.