Somta 7/16" Straight Shank Extra Length Drill Bit Acrow B.BSD.LS.31 – Locking Sleeve for BSD31 Fine Boring Heads The American Buttress Full Profile

The American Buttress Full Profile External Thread Turning Insert is engineered for high-precision threading of buttress threads commonly used in heavy-load applications such as jacks

🔹 Shank Diameter (D2): 7/16"

Straight Flute Design – Delivers smooth cutting action and efficient chip removal

External Thread Turning Insert – Trapezoidal Thread (DIN 103)

Somta 7/16" Straight Shank Extra Length Drill Bit Acrow B.BSD.LS.31 – Locking Sleeve for BSD31 Fine Boring Heads The American Buttress Full ProfileThe Somta Series 136 7 16" Straight Shank Extra Length Drill Bit is manufactured from premium High Speed Steel and designed for deep hole drilling where extended reach is required. Produced to ISO 3292 standards, this extra length drill provides excellent accuracy, durability, and reliable cutting performance for industrial and engineering applications. Featuring a straight shank design with a standard 118 point, this drill delivers smooth penetration