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1 to 10mm IN .1mm STEPS 10.5 to 13mm IN .5mm STEPS
HSS Twist Drills , DIN338 , Fully ground in metal case
HSS Twist Drill Bits, DIN338, Fully Ground.
Manufacturing Progressly ground.
Material: S 600 HSS
Sizes:1mm-13mm
Surface Finishing: Ground Silver
Point Angle:118dec
Item No.:BITMM101
The twist drill is the most common type of drill. The shank of the drill is held by the machine tool, which in turn imparts a rotary motion. This shank may be straight or tapered. The body of the drill is typically made up of two spiral grooves known as flutes, which are defined by a helix angle that is generally about 30 degree but can vary depending on the material properties of the workplace. The point of the drill generally forms a 118dec angle and includes a 10 degree clearance angle and chisel edge .The chisel edge is flat with web thickness of approximately 0.015 x drill diameter. This edge can cause problems in hole location owing to its ability to "walk" on a surface before engaging the workplace. In the case of brittle materials, drill point angles of less than 118 are used, while ductile materials use larger points angles and smaller clearance angles.
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To be received within 5 days of close of auction.
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PAYMENT TERMS :
AUSTRALIAN BUYERS: preferred is direct deposit or Australia Post Money Order. To be received within 5 days of close of Auction.
INTERNATIONAL BUYERS: Pay Pal payment ONLY.
To be received within 5 days of close of auction.
Items sent at buyers risk. I will not be responsible for loss or damage during transit.
All items are well packed and Labelled, please check your eBay delivery address as we hold no responsibility for wrongly marked addressed items. Please check your lo
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