Reference Guide
www.irwin.com
Metal Drilling
METAL DRILLING
142
Jobber Length Drill Bits
Black & Gold HSS Fractional
Straight Shank Jobber Length Drill Bits
with 135˚ Split Point (Series 30190)
3019016B
• 135° split-point tip starts drilling immediately and
eliminates “walking.”
• Engineered with premium high speed steel with black and gold
oxide coating for corrosion resistance.
• 3-flatted shank on 3/16” and above sizes for exceptional grip
on chuck.
Size
Decimal
Equiv.
Flute
Length
Overall
Length
Carded
Item #
Bulk
Item #
3/64"
.0469
3/4"
1-3/4"
—
3019003B
1/16"
.0625
7/8"
1-7/8"
—
3019004B
5/64"
.0781
1"
2"
—
3019005B
3/32"
.0938
1-1/8"
2-1/4"
—
3019006B
7/64"
.1094
1-1/2"
2-5/8"
—
3019007B
1/8"
.1250
1-5/8"
2-3/4"
—
3019008B
9/64"
.1406
1-3/4"
2-7/8"
—
3019009B
5/32"
.1563
2"
3-1/8"
—
3019010B
11/64"
.1719
2-1/8"
3-1/4"
—
3019011B
3/16"
.1875
2-5/16"
3-1/2"
—
3019012B
13/64"
.2031
2-7/16"
3-5/8"
—
3019013B
7/32"
.2188
2-1/2"
3-3/4"
—
3019014B
15/64"
.2344
2-5/8"
3-7/8"
—
3019015B
1/4"
.2500
2-3/4"
4"
—
3019016B
17/64"
.2656
2-7/8"
4-1/8"
—
3019017B
9/32"
.2813
2-15/16"
4-1/4"
—
3019018B
19/64"
.2969
3-1/16"
4-3/8"
—
3019019B
5/16"
.3125
3-3/16"
4-1/2"
—
3019020B
21/64"
.3281
3-5/16"
4-5/8"
—
3019021B
11/32"
.3438
3-7/16"
4-3/4"
—
3019022B
23/64"
.3594
3-1/2"
4-7/8"
—
3019023B
3/8"
.3750
3-5/8"
5"
—
3019024B
25/64"
.3906
3-3/4"
5-1/8"
—
3019025B
13/32"
.4063
3-7/8"
5-1/4"
—
3019026B
27/64"
.4219
3-15/16"
5-3/8"
—
3019027B
7/16"
.4375
4-1/16"
5-1/2"
—
3019028B
29/64"
.4531
4-3/16"
5-5/8"
—
3019029B
15/32"
.4688
4-5/16"
5-3/4"
—
3019030B
31/64"
.4844
4-3/8"
5-7/8"
—
3019031B
1/2"
.5000
4-1/2"
6"
—
3019032B
Titanium Nitride (TiN) Coated HSS Fractional
63724
• Titanium Nitride coating resists heat and friction, providing up to six
times longer life than standard high speed steel bits.
• 135° split-point tip starts drilling immediately and eliminates “walking.”
• Straight shank.
Sets:
Metal Index:
63737, 3018003
Size
Decimal
Equiv.
Flute
Length
Overall
Length
Carded
Item #
Bulk
Item #
1/16"
.0625
7/8"
1-7/8"
63904*
63704ZR
5/64"
.0781
1"
2"
63905*
63705ZR
3/32"
.0938
1-1/8"
2-1/4"
63906*
63706ZR
7/64"
.1094
1-1/2"
2-5/8"
63907*
63707ZR
1/8"
.1250
1-5/8"
2-3/4"
63908*
63708
9/64"
.1406
1-3/4"
2-7/8"
63909
63709ZR
5/32"
.1563
2"
3-1/8"
63910
63710
11/64"
.1719
2-1/8"
3-1/4"
63911
63711ZR
3/16"
.1875
2-5/16"
3-1/2"
63912
63712
13/64"
.1563
2-7/16"
3-5/8"
63913
63713ZR
7/32"
.2188
2-1/2"
3-3/4"
63914
63714ZR
15/64"
.2344
2-5/8"
3-7/8"
63915
63715ZR
1/4"
.2500
2-3/4"
4"
63916
63716
17/64"
.2656
2-7/8"
4-1/8"
—
63717
9/32"
.2812
2-15/16"
4-1/4"
63918
63718
19/64"
.2969
3-1/16"
4-3/8"
—
63719
5/16"
.3125
3-3/16"
4-1/2"
63920
63720ZR
21/64"
.3281
3-5/16"
4-5/8"
—
63721ZR
11/32"
.3438
3-7/16"
4-3/4"
63922
63722
23/64"
.3594
3-1/2"
4-7/8"
—
63723
3/8"
.3750
3-5/8"
5"
63924
63724
25/64"
.3906
3-3/4"
5-1/8"
—
63725
13/32"
.4063
3-7/8"
5-1/4"
63926
63726
27/64"
.4219
3-15/16"
5-3/8"
—
63727
7/16"
.4375
4-1/16"
5-1/2"
63928
63728
29/64"
.4531
4-3/16"
5-5/8"
—
63729
15/32"
.4689
4-5/16"
5-3/4"
63930
63730
31/64"
.4844
4-3/8"
5-7/8"
—
63731ZR
1/2"
.5000
4-1/2"
6"
63932
63732ZR
*Note: 2 bits per card
Straight Shank Jobber Length Drill Bits with
135˚ Split Point (Series 639/637)