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Dormer Pramet A77723/64 5971010 jobber length drill bit, 23/64" (9.13mm) diameter, 135° split point, Cobalt High Speed Steel (HSS-E) with steam tempered bronze finish. Standard spiral flute geometry, cylindrical shank, DIN 338. Overall length 125mm, flute length 81mm. Suitable for steel, cast iron, and high-temperature alloys.
MODEL 5971010
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Drill point 135°
Basic Standard
DIN 338
Coating
Bronze
Connection (shank) description
Cylindrical shank
Connection diameter - millimeter (DCON MS)
9.13
Cutting diameter - fractional inch (DC)
23/64
Cutting diameter - inch (DC)
0.3594
Cutting diameter - millimeter (DC)
9.13
Cutting diameter tolerance class (TCDC)
h8
Drill Length
Jobber
EDP number
374931
Hand (Cutting direction)
Right
Length chip flute - inch (LCF)
3.189
Length chip flute - millimeter (LCF)
81
Material
HSS-E
Material application
K - Cast iron, P - Steel and cast steel, S - High-temperature alloys
MID number
5971010
Ordering code ANSI
A77723/64
Overall length - inch (OAL)
4.9213
Overall length - millimeter (OAL)
125
Point Angle (SIG)
135
Spiral form
Standard Spiral
Surface treatement
Steam Tempered
Usable length (ULDR)
4
Recommended for use in difficult materials and applications, the A777 drill from Dormer has a 135 degree split point which helps to self-center the drill and reduces the amount of force needed to drill the hole, whilst the bronze oxide finish helps stop work piece material from sticking to the cutting edge of the drill.
The A777 is made from premium high speed cobalt material which means it can be used for drilling hard materials, including tool steels.
Producing more accurate sized holes with a better finish, the A777 drill really is a great performer.
*Note: 4 Facet Point up to 1.4mm
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