Steam Tempered (Steam Oxide) Surface Treatment
A1257/16X315
Extra Length Drill
Ordering number: 5969057
Extra long length drill with straight shank, diameter 0.4375" (7/16) with an overall length of 310mm and flute length of 250mm according to BS 328 standard with 118° conical point, HSS with steam tempered finish for 10xD single pass drilling without pecki
Product Feature
High Speed Steel Tool Material
BS 328 – Drills and Reamers Standards
10×D Usable Tool Depth to Diameter Ratio
Drill Point 118°
Cylindrical Shank / Straight Shank
Standard Spiral Flute Design
Right Hand Rotation / Cutting
h8 – Industry Standard Tool Tolerance Zone (based on diameter range)