Skid Steer Single Flight (Dirt) Heavy Duty Auger Bits - Star Industries

📘 Overview

The Star Industries Single Flight Heavy Duty Auger Bit (Model 160A-HDSF) is engineered for fast, clean hole drilling in black dirt, sandy soil, compacted soils, heavy clay, asphalt, frozen ground, and fractured rock. The single-flight design digs faster, carries more soil out of the hole, and leaves a cleaner, straighter hole than dual-flight bits in standard soil conditions. Features a rugged cast boring head for long life, Drive-In style teeth, and a patented coupler for added drill stem strength. Available in 6"" through 36"" diameters in 48"" standard length. 5-year factory guarantee. USA made since 1981.

⚙️ Key Features

• Single-flight design — digs faster and clears soil more efficiently than dual-flight in standard conditions
• Available in 6"" to 36"" diameters
• 48"" standard length
• Rugged cast boring head — longer life than fabricated heads
• Drive-In style teeth — for soil penetration efficiency
• Patented coupler — added drill stem strength at the drive connection
• Ideal for: black dirt, sandy soil, compacted soils, heavy clay, asphalt, frozen ground, fractured rock
• 5-year factory guarantee | USA made since 1981

🔑 Benefits

• Single-flight design evacuates soil faster than dual-flight in standard conditions — a single helical flight has more open space between turns, allowing displaced soil to move up and out of the hole rapidly. In non-rocky soil, this translates to faster cycle times per hole and a cleaner hole bottom compared to tightly-wound dual-flight designs that can pack soil between flights.
• Cast boring head outlasts fabricated steel heads in abrasive soil — fabricated (welded) boring heads are assembled from steel plate and can fail at welds under repeated impact from rocks and hard material. Cast boring heads are formed as single pieces without weld joints, eliminating weld failure as a failure mode and providing more consistent material properties throughout the head.
• Patented coupler prevents the drive-connection failure that destroys standard couplers — the connection between the auger shaft and the drive unit is the highest-stress point in the auger system, seeing both torsional and axial shock loads. Star's patented coupler design reinforces this connection point specifically, preventing the shaft twist and coupler separation that can occur in hard material when the bit stalls.
• Wide diameter range (6""-36"") covers every common post, pier, and footing application from one product family — rather than sourcing different bit brands for different diameter requirements, the 160A-HDSF series covers T-post (6""), standard fence (9""-12""), deck pier (12""-18""), utility pole (18""-24""), and foundation caisson (24""-36"") applications in a single compatible product line with one shaft standard.

📊 Specifications

🔗 Attachment Compatibility

Requires an auger drive unit with 2"" hex output shaft. Compatible with Star Industries 160D series drives and all standard 2"" hex skid steer auger drives. For solid rock or concrete, select the 160A-R Rock Auger series instead — the HDSF is rated for fractured rock but not solid unbroken rock face.

🚜 Machine Compatibility

Compatible with skid steer loaders and compact track loaders with a Universal Quick Attach (SSQA) system:

Requires auger drive unit with 2"" hex output. HDSF is rated for fractured rock — select 160A-R Rock Auger for solid rock or concrete applications.

❓ FAQs

📥 Downloads

Download Spec Sheet (PDF)