Grain Systems Tanks PNEG-4021 - Manual (Page 27)

4. Bolt and Nut Usage
PNEG-4021 40 Series 18', 21' and 24' Diameter Bins 27
Bolt (S-277)
An S-277 is a 5/16" x 1-1/4" YDP bolt pre-assembled with a sealing washer.
Bolt (S-7487)
An S-7487 is a 3/8" x 1" JS bolt that is pre-assembled with a sealing washer.
Bolt (S-277) is used in the following locations:
1. Used in accessories.
2. The color of the bucket lid is black.
A 1.445" (3.67 cm) C Grade 5
B 1.250" (3.17 cm) D Grade 5
Bolt (S-7487) is used in the following locations:
1. Use in all sidewall connections for 20 gauge through
10 gauge sidewall to sidewall sheets.
2. Use for horizontal and vertical seam connections for
9 gauge through 8 gauge sidewall sheets.
3. Use when attaching base angle to sidewall sheet on flat
bottom bins.
4. The color of bucket lid is grey.
NOTE: Do not use to splice the stiffeners together on the
flanges where they connect to each other or the
splice plates.
A 1.350" (3.43 cm) C Grade 8
B 1.000" (2.54 cm) D Grade 8.2