Reference Guide
www.irwin.com
Metal Drilling
METAL DRILLING
140
Jobber Length Drill Bits
• Self-centering, precision-ground TURBOMAX
®
feature-point
tip eliminates “walking” on flat and curved surfaces, stays
sharp longer, and drills faster than standard high speed
steel bits.
• Manufactured with premium high speed steel with black
and gold oxide coating for maximum corrosion resistance.
• 3-flatted shank on 3/16” and above sizes for exceptional
grip on chuck.
Sets
:
Metal Index:
73136, 73137, 73138, 73149
Pro Set Cases:
318015, 318018
Size
Decimal
Equiv.
Flute
Length
Overall
Length
Carded
Item #
Bulk
Item #
1/16"
.0625
7/8"
1-7/8"
73304*
73104
5/64"
.0781
1"
2"
73305*
73105ZR
3/32"
.0938
1-1/8"
2-1/4"
73306*
73106ZR
7/64"
.1094
1-1/2"
2-5/8"
73307*
73107
1/8"
.1250
1-5/8"
2-3/4"
73308*
73108
9/64"
.1406
1-3/4"
2-7/8"
73309
73109
5/32"
.1563
2"
3-1/8"
73310
73110
11/64"
.1719
2-1/8"
3-1/4"
73311
73111
3/16"
.1875
2-5/16"
3-1/2"
73312
73112
13/64"
.2031
2-7/16"
3-5/8"
73313
73113
7/32"
.2188
2-1/2"
3-3/4"
73314
73114
15/64"
.2344
2-5/8"
3-7/8"
73315
73115
1/4"
.2500
2-3/4"
4"
73316
73116
17/64"
.2656
2-7/8"
4-1/8"
73317
73117
9/32"
.2813
2-15/16"
4-1/4"
73318ZR
73118
19/64"
.2969
3-1/16"
4-3/8"
73319
73119
5/16"
.3125
3-3/16"
4-1/2"
73320
73120
21/64"
.3281
3-5/16"
4-5/8"
73321
73121
11/32"
.3438
3-7/16"
4-3/4"
73322
73122
23/64"
.3594
3-1/2"
4-7/8"
73323
73123
3/8"
.3750
3-5/8"
5"
73324
73124
25/64"
.3906
3-3/4"
5-1/8"
73325
73125
13/32"
.4063
3-7/8"
5-1/4"
73326
73126
27/64"
.4219
3-15/16"
5-3/8"
73327
73127
7/16"
.4375
4-1/16"
5-1/2"
73328
73128
29/64"
.4531
4-3/16"
5-5/8"
73329
73129
15/32"
.4688
4-5/16"
5-3/4"
73330
73130
31/64"
.4844
4-3/8"
5-7/8"
73331
73131
1/2"
.5000
4-1/2"
6"
73332
73132
73124
TURBOMAX
®
HSS Fractional
Straight Shank Jobber Length Drill Bits
(Series 733/731)
*Note: 2 bits per Card
• Standard TURBOMAX bit with 3/8" reduced shank
Sets:
Metal Index:
3018006B
Size
Decimal
Equiv.
Flute
Length
Overall
Length
Carded
Item #
Bulk
Item #
25/64"
.3906
3-3/4"
5-1/8"
73625ZR
73425
13/32"
.4063
3-7/8"
5-1/4"
73626
73426
27/64"
.4219
3-15/16"
5-3/8"
73627ZR
73427
7/16"
.4375
4-1/16"
5-1/2"
73628ZR
73428ZR
29/64"
.4531
4-3/16"
5-5/8"
73629ZR
73429ZR
15/32"
.4688
4-5/16"
5-3/4"
73630ZR
73430
31/64"
.4844
4-3/8"
5-7/8"
73631
73431ZR
1/2"
.5000
4-1/2"
6"
73632
73432ZR
73432
TURBOMAX
®
HSS 3/8" Reduced Shank
Jobber Length Drill Bits (Series 736/734)










