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| Place of Origin | CHINA |
| Brand Name | ROSCHEN |
| Certification | ISO |
| Model Number | 8 1/4″ (210mm) |
8 1/4″ (210mm) Double Key Heavy Duty Hollow Stem Auger
Description
All 8 1/4″ (210mm) Double Key Hollow Stem Augers feature a continuous hardfaced flighting design, 3/8″ (9.5 mm) thick on the outer edge with a 6″ (152mm) pitch. The heavy duty, tapered tool joints are made from 4142 alloy steel and feature double-bolt connections.
Specifications:
| No | Description | Part # | Lbs. | Kg. |
| Auger Section | ||||
| 1 | 8 1/4″ (210mm) DK HD Hollow Stem Auger 8 1/4″ (210mm) I.D. x 12″ (305mm) O.D. x 5′ (1524mm) | A814200HD | 183 | 83 |
| 2 | 8 1/4″ (210mm) DK HD Drive Cap with 2″ (51mm) Hex Pin | ADC814211HD | 42 | 19.1 |
| 3 | #4 Nut & Bolt for Rod-to-Cap Adapter | ANAB4 | 0.9 | 0.4 |
| 4 | 8 1/8″ (206mm) Pilot Bit Connector (NW Box – 3 1/2″ API Reg. Box) | APBC818NWB | 11 | 5 |
| 4 | 8 1/8″ (206mm) Pilot Bit Connector (NWJ Box – 3 1/2″ API Reg. Box) | APBC818NWJB | 12 | 5.4 |
| 5 | Rod-to-Cap Adapter – NW Pin | ARCANWP | 7 | 3.2 |
| 5 | Rod-to-Cap Adapter – NWJ Pin | ARCANWJP | 6 | 2.7 |
| 6 | NW Drill Rod – 5′ (1524mm) | ADR5NW | 31 | 14.1 |
| 6 | NWJ Drill Rod – 5′ (1524mm) | ADR5NWJ | 35 | 15.9 |
| Auger Repair Parts | ||||
| 1A | 8 1/4″ (210mm) DK HD Pin Tool Joint | ATJ8142PHD | 13 | 5.9 |
| 1B | 8 1/4″ (210mm) DK HD Box Tool Joint | ATJ8142BHD | 12 | 5.4 |
| 7 | ALB3 Auger Lock Bolt | ALB3 | 0.4 | 0.2 |
| 8 | ABN3 Auger Bushing Nut | ABN3 | 0.2 | 0.1 |
| 9 | ADK2 Auger Drive Key | ADK2 | 0.3 | 0.1 |
| Auger Cutterheads and Pilot Bits | ||||
| 10 | 8 1/4″ (210mm) DK HD Blade Cutterhead – 13″ (330mm) O.D. | ACH814250HD | 35 | 15.9 |
| 10 | 8 1/4″ (210mm) DK HD Spade Cutterhead – 13″ (330mm) O.D. | ACH814251HD | 35 | 15.9 |
| 10 | 8 1/4″ (210mm) DK HD Blade/Bullet Cutterhead – 13″ (330mm) O.D. | ACH814260HD | 40 | 18.1 |
| 10 | 8 1/4″ (210mm) DK HD Spade/Bullet Cutterhead – 13″ (330mm) O.D. | ACH814261HD | 37 | 16.8 |
| 10 | 8 1/4″ (210mm) DK HD Bullet Cutterhead – 13″ (330mm) O.D. | ACH814270HD | 37 | 16.8 |
| 11 | 8 1/8″ (206mm) Apex Pilot Bit, 3 1/2″ API Reg. Pin | APB818APX | 22 | 10 |
| 11 | 8 1/8″ (206mm) Bullet Pilot Bit, 3 1/2″ API Reg. Pin | APB818BUL | 27 | 12.2 |
Hollow Stem Augers
Hollow stem augers are used extensively for soil sampling and groundwater monitoring in industrial and commercial installations. The advantages of hollow stem augers are many. Unlike the solid stem method, drill rods can pass through the center of the auger section and an undisturbed sample of the soil can be taken for analysis or groundwater monitoring pipe can be installed.
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