A1211 NO.58 Jobber Drill

Series A1211 General purpose drills for steels, cast steel, grey cast iron, malleable cast iron, nickel brass, aluminium alloy and graphite. Point angle: 118, helix angle: normal, web thickness: standard, relief angle: 10 - 20, tolerance of diameter: h8, tolerance of shank: f11. Manufactured to BS 328/DIN338RN. Black Finish (W-Finish) This is the most common surface finish and is the result of a steam tempering operation in which steam is passed over the product during a controlled tempering cycle, producing a black oxide layer. Black tools are generally recommended for ferrous applications where the oxide layer aids chip flow, helps to dissipate heat by retaining some coolant on the tool surface and also helps to prevent the tool from staining.

Overall Length	36mm
Number of Flutes	2
Shank Diameter Tolerance	F11
Standards Met	DIN338
Drill Diameter Tolerance	H8
Point Angle	118\u00b0
Material	HSS
Coolant Delivery	External
Drill Diameter Gauge	No.58
Flute Length	14mm
MFR Part No.	5058343
Gauge	58
Series	A1211