Home Companies Xian Mager Machinery International Trade Co., Ltd.

HSS , HSS Cobalt & Solid Carbide Step Drill bits (1 step)

Xian Mager Machinery International Trade Co., Ltd.
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[China] country

Address: Room#7B014, Lanxi Garden, No.8 xingShansi East Street, Xi'An City , P.R.China

Contact name:Felix MU

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Xian Mager Machinery International Trade Co., Ltd.

HSS , HSS Cobalt & Solid Carbide Step Drill bits (1 step)

Country/Region china
Categories Air Drills
InquireNow

Product Details

 
Standard Step Drills.
 
An essential tool for every tool room.One tool does two jobs in a single pass.They can be sharpened repeatedly and are easily modified for any special length-of-step.
 
1,High Speed Steel-Jobber's Length
2,3/8" & 1/4" Shank
 
 
For Drilling & Counterboring Cap Screw Clearance Holes.

Screw SizeMinor Dia.Major Dia.Step Length
No.6.1501/41/2
No.8.178L1/2
No.10.204Q5/8
1/49/3213/3211/16
5/1611/321/23/4
3/813/3219/327/8

 
For Drilling 45° Chamfered Holes To Be Tapped
(To Produce approximately 70° thread)

Screw SizeMinor Dia.Major Dia.Step Length
5-40.1019/641/2
6-32.1095/321/2
8-32.1363/161/2
8-36.1363/161/2
10-24.1521/45/8
10-32.1611/45/8
1/4-20.20421/6413/16
1/4-28.21821/6413/16
5/16-18.26113/3215/16
5/16-24.27213/3215/16
3/8-16.31631/641
3/8-24.33931/641
7/16-14.37517/321-1/16
7/16-20.39017/321-1/16
1/2-13.4375/81-1/16
1/2-20.4525/81-1/16

 
For Drilling & Countersinking 82° Flat Head Machine Screws

Screw SizeMinor Dia.Major Dia.Step Length
No.60.1429/321/2
No.8.169Q1/2
No.10.196W5/8
1/4.2571/211/16
5/16.3205/83/4
3/8.3833/47/8
1/2.5107/81

 
*Shorter than jobber's length

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