Grain Systems PNEG-1276 - Manual (Page 17)

PNEG-1276 Top Dry Autoflow Construction Manual 24', 30' and 36' 17
4. Hardware
Hardware/Bolting Requirements
IMPORTANT: Do not tighten bolts to exceed the torque specifications listed below.
Important Hardware Usage
20 Gauge through 15 gauge sidewall sheets, use 5/16" x 3/4" bolts and nuts (S-275).
14 Gauge and 13 gauge sidewall sheets, use 5/16" x 3/4" bolts and nuts (S-275).
Use 5/16" x 1-1/4" (S-277) for attaching floor flashing to the sidewall.
Figure 4A
Grade 2
Grade 2 bolts are designated with a plain head.
Grade 5
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
Grade 8 bolts are designated by six (6) slash marks on the head.
Grade 8.2
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.
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 GSI.