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Precision Twist Drill R40C1/4, part number 5999406, 1/4" (0.25") HSS heavy duty jobber drill with black oxide finish and 135° point. NAS907 standard, right-hand cut, cylindrical shank. 1-3/8" flute length, 2-1/2" overall length. Suitable for steel, stainless steel, cast iron, and high-temperature alloys.
MODEL 5999406
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$3.64 Each
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ApplicationAngleIcon_DICT_SEL
Drill point 135°
Basic Standard
NAS907
Coating
Steam Tempered
Cutting diameter - fractional inch (DC)
1/4
Cutting diameter - inch (DC)
0.25
Cutting diameter - millimeter (DC)
6.35
Hand (Cutting direction)
Right
Length chip flute - fractional inch (LCF)
1.3/8
Length chip flute - inch (LCF)
1.375
Material
HSS
Overall length - fractional inch (OAL)
2.1/2
Overall length - millimeter (OAL)
63.5
Point Angle (SIG)
135
Shank
Cylindrical shank
Usable length (ULDR)
2.5
Available in sizes from 1/16 inch to 1/2 inch in increments of 1/64 inch, R40C screw machine length jobber drills are manufactured to NAS 907 type C standards and from premium High Speed Steel for use in many materials, including aluminum, steel and stainless steel, and have a steam oxide finish which prevents workpiece material from sticking to the cutting edges of the tool, so you get clean and accurate holes.
As an aid to self-centering and to reduce the push force needed, the drills come with a 135 degree split point, and are very versatile drills, being suitable for use in many different hand-held and machine applications.
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