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Style 370 Step Drills for Holes-To-Be-Tapped

Style 370 Step Drills for Holes-To-Be-Tapped

Style 370. For Drilling 45 degree Chamfered Holes To-Be-Tapped.
High Speed Steel. Jobbers length.
Easily resharpened. Does 2 jobs in a single pass.
Made in USA
Quantity Price Model Description Minor Diameter Major Diameter Step Length Flute Length Overall Length

$12.10 DRST370-4-40
Step Drill 370, HSS, for Holes-to-be-Tapped w/Chamfer: #4-40, 1009-0034 0.089 .1285" 3/8 1 5/8 2 3/4

$12.75 DRST370-5-40
Step Drill 370, HSS, for Holes-to-be-Tapped w/Chamfer: #5-40, 1009-0035 0.101 9/64 1/2 1 3/4 2 7/8

$12.90 DRST370-6-32
Step Drill 370, HSS, for Holes-to-be-Tapped w/Chamfer: #6-32, 1009-0040 0.109 5/32 1/2 2 3 1/8

$13.25 DRST370-8-32
Step Drill 370, HSS, for Holes-to-be-Tapped w/Chamfer: #8-32, 1009-0045 0.136 3/16 1/2 2 5/16 3 1/2

$13.45 DRST370-8-36
Step Drill 370, HSS, for Holes-to-be-Tapped w/Chamfer: #8-36, 1009-0050 0.136 3/16 1/2 2 5/16 3 1/2

$14.10 DRST370-10-24
Step Drill 370, HSS, for Holes-to-be-Tapped w/Chamfer: #10-24, 1009-0055 0.152 1/4 5/8 2 3/4 4

$14.10 DRST370-10-32
Step Drill 370, HSS, for Holes-to-be-Tapped w/Chamfer: #10-32, 1009-0060 0.161 1/4 5/8 2 3/4 4

$16.35 DRST370-12-24
Step Drill 370, HSS, for Holes-to-be-Tapped w/Chamfer: #12-24, 1009-0064 0.179 9/32 11/16 2 15/16 4 1/4

$17.35 DRST370-1/4-20
Step Drill 370, HSS, for Holes-to-be-Tapped w/Chamfer: 1/4-20, 1009-0065 0.204 21/64" 13/16 3 5/16 4 5/8

$17.65 DRST370-1/4-28
Step Drill 370, HSS, for Holes-to-be-Tapped w/Chamfer: 1/4-28, 1009-0070 0.218 21/64" 13/16 3 5/16 4 5/8

$19.80 DRST370-5/16-18
Step Drill 370, HSS, for Holes-to-be-Tapped w/Chamfer: 5/16-18, 1009-0075 0.261 13/32 15/16 3 7/8 5 1/4

$20.05 DRST370-5/16-24
Step Drill 370, HSS, for Holes-to-be-Tapped w/Chamfer: 5/16-24, 1009-0080 0.272 13/32 15/16 3 7/8 5 1/4

$26.15 DRST370-3/8-16
Step Drill 370, HSS, for Holes-to-be-Tapped w/Chamfer: 3/8-16, 1009-0085 0.316 31/64 1 4 3/8 5 7/8

$26.65 DRST370-3/8-24
Step Drill 370, HSS, for Holes-to-be-Tapped w/Chamfer: 3/8-24, 1009-0090 0.339 31/64 1 4 3/8 5 7/8

$45.60 DRST370-7/16-14
Step Drill 370, HSS, for Holes-to-be-Tapped w/Chamfer: 7/16-14, 1009-0095 0.375 17/32 1 1/16 4 13/16 6 5/8

$45.60 DRST370-7/16-20
Step Drill 370, HSS, for Holes-to-be-Tapped w/Chamfer: 7/16-20, 1009-0100 0.39 17/32 1 1/16 4 13/16 6 5/8

$52.65 DRST370-1/2-13
Step Drill 370, HSS, for Holes-to-be-Tapped w/Chamfer: w/Chamfer: 1/2-13, 1009-0105 0.437 5/8" 1 1/16 5 3/16 7 1/8

$53.30 DRST370-1/2-20
Step Drill 370, HSS, for Holes-to-be-Tapped w/Chamfer: 1/2-20, 1009-0110 0.452 5/8" 1 1/16 5 3/16 7 1/8

$66.35 DRST370-5/8-11
Step Drill 370, HSS, for Holes-to-be-Tapped w/Chamfer: 5/8-11, 1009-0111 0.531 3/4 1 1/16 5 5/8 7 5/8