The minimum hollow stem auger sizes recommended for installation of 2-inch diameter casing is 4.25 inches; however, larger hollow stem auger sizes may be necessary. The Environmental Protection Agency recommends the inner diameter of the auger be 3 inches to 5 inches greater than the outer diameter of the casing.
Parts
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.625 Diameter, 2.875 Tube
MN: 600616
1-5/8 in. Hex, 77/66 Series Machines
MN: 600193
1-5/8 Hex Drive
MN: 239002
24 in.
MN: 600216
48 in.
MN: 600171
60 in.
MN: 600154
8.75 in. OD, Spade / Bullet
MN: 600155
MN: 100194
3/4-10NC GR5 ZN
MN: 101227
4.25 HSA Pilot Bit Sub 2-3/8 REG x AWJ
7.00 in. S-S
MN: 238316
Bullet 3.38 Reg Pin
MN: 600672
Apex 3.38 Reg Pin
MN: 600156
60 in.
MN: 236534
24 in.
MN: 238501
12 in.
MN: 238499
MN: 202104
MN: 202105
Legacy GH60, 6712DT, 7822DT, 6011DT
MN: 202187
4.25 HSA SIDE GRIP PULLER WLDT 31 SERIES
MN: 240730
3230DT & 8040DT
MN: 208829
MN: 235915
MN: 202081
MN: 600157
AWJ Spring Assisted Swivel Lift Cap
AWJ, Pin
MN: 231440
1.25 in. Center Rod
MN: 205182
.625 Diameter, 2.875 Tube
MN: 600616
1-5/8 in. Hex, 77/66 Series Machines
MN: 600193
1-5/8 Hex Drive
MN: 239002
24 in.
MN: 600216
48 in.
MN: 600171
60 in.
MN: 600154
8.75 in. OD, Spade / Bullet
MN: 600155
MN: 100194
3/4-10NC GR5 ZN
MN: 101227
4.25 HSA Pilot Bit Sub 2-3/8 REG x AWJ
7.00 in. S-S
MN: 238316
Bullet 3.38 Reg Pin
MN: 600672
Apex 3.38 Reg Pin
MN: 600156
60 in.
MN: 236534
24 in.
MN: 238501
12 in.
MN: 238499
MN: 202104
MN: 202105
Legacy GH60, 6712DT, 7822DT, 6011DT
MN: 202187
4.25 HSA SIDE GRIP PULLER WLDT 31 SERIES
MN: 240730
3230DT & 8040DT
MN: 208829
MN: 235915
MN: 202081
MN: 600157
AWJ Spring Assisted Swivel Lift Cap
AWJ, Pin
MN: 231440
1.25 in. Center Rod
MN: 205182