IRWIN INDUSTRIAL TOOLS Step Drill Bits

Cobalt / high-speed steel step drill bits designed to drill or enlarge holes in aluminium, brass, copper, PVC, steel or wood. Feature a single-flute cutting edge and a Speedpoint tip, and come in different shank sizes and bit lengths

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IRWIN INDUSTRIAL TOOLS -

Cobalt Step Drill Bit

StyleModelNo. Of Hole SizeMax. Hole SizeMin. Hole SizeDrill Bit Size IncludedMaterial-machiningShank Type-machiningMax. Drilling DepthBit LengthPrice
A10239cb21 1/8"7/8"7/8", 1-1/8"CobaltStraight With Three Flats1/8"3 1/8"€226.09
A10232cb61/2"3/16"3/16", 1/4", 5/16", 3/8", 7/16", 1/2"Cobalt Alloy SteelHex5/16"3 1/8"€78.79
A10220cb81"9/16"9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", 1"Cobalt Alloy SteelStraight With Three Flats1/8"3"€156.41
A10233cb93/4"1/4"1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4"Cobalt Alloy Steel-1/8"2 3/4"€139.79
A10234cb127/8"3/16"3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8"CobaltStraight With Three Flats1/8"3 1/4"€157.28
A10231cb131/2"1/8"1/8", 5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 13/32", 7/16", 15/32", 1/2"Cobalt Alloy SteelHex1/8"3 1/8"€81.41
IRWIN INDUSTRIAL TOOLS -

Step Drill Bits

StyleModelNo. Of Hole SizeMax. Hole SizeMin. Hole SizeShank Type-machiningDecimal EquivalentStep IncrementsMaterialMaterial-machiningPrice
A10311ZR17/8"7/8"Hex0.8755/32"High Speed SteelHigh Speed Steel€64.09
B11105ZR1335 mm5 mmStraight With Three Flats0.1969, 0.2953, 0.3937, 0.5118, 0.6299, 0.748, 0.8268, 0.9055, 1.0236, 1.1417, 1.2205, 1.2992, 1.3782 mmHigh Speed SteelHigh Speed Steel€171.54
C10502ZR173/4"1/8"Straight With Three Flats0.125, 0.1563, 0.1875, 0.2188, 0.25, 0.2813, 0.3125, 0.3438, 0.375, 0.4063, 0.4375, 0.4688, 0.5, 0.5625, 0.625, 0.6875, 0.75-High Speed SteelHigh Speed Steel€154.05
IRWIN INDUSTRIAL TOOLS -

High Speed Steel Step Drill Bit

StyleModelNo. Of Hole SizeMax. Hole SizeMin. Hole SizeDrill Bit Size IncludedFinish-machiningShank Type-machiningFinishSizePrice
AUNIBIT 101-----Bright1/2"€45.25
BUNIBIT 1117/8"7/8"7/8"Black OxideStraight With Three FlatsBright7/8"€60.33
CUNIBIT 1311 1/8"1 1/8"1 1/8"Black OxideStraight With Three FlatsBright1.125"€117.72
D1023921 1/8"7/8"7/8", 1-1/8"Black OxideStraight With Three FlatsSteam Oxide7/8" to 1 1/8"€154.04
EUNIBIT 261/2"3/16"3/16", 1/4", 5/16", 3/8", 7/16", 1/2"Black OxideHexBright3/16" to 1/2"€45.77
F1510261 3/8"1/8"3/16", 1/4", 5/16", 3/8", 7/16", 1/2"Black OxideStraight With Three FlatsTiN Coating3/16" to 1/2"€73.47
GUNIBIT 2081"9/16"9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", 1"Black OxideStraight With Three FlatsBright9/16" to 1"€94.06
HUNIBIT 393/4"1/4"1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4"Black OxideStraight With Three FlatsBright1/4" to 3/4"€82.47
I1510393/4"1/4"1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4"TinStraight With Three FlatsTiN Coating1/4" to 3/4"€116.45
J15104127/8"3/16"3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8"TinStraight With Three FlatsTiN Coating3/16" to 7/8"€174.93
KUNIBIT 4127/8"3/16"3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8"Black OxideStraight With Three FlatsBright3/16" to 7/8"€105.17
LUNIBIT 1131/2"1/8"1/8", 5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 13/32", 7/16", 15/32", 1/2"Black OxideHexBright1/8" to 1/2"€45.77
M15101131/2"1/8"1/8", 5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 13/32", 7/16", 15/32", 1/2"TinHexTiN Coating1/8" to 1/2"€82.26
IRWIN INDUSTRIAL TOOLS -

Step Drill 10 Hole Sizes 1/4-1 3/8

ModelItemPrice (ex. VAT)
10235AD2VCD€226.31