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Dormer E0251/4 5974027 UNC Machine Tap Spiral Point 1/4 inch x 20
MODEL 5974027
$11.47 Each
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Returnable: Yes
California Prop 65 warningBasic Standard
ANSI
Clamping width - inch
0.191
Coating
Bright
Connection diameter - inch (DCON MS)
0.255
Connection diameter - millimeter (DCON MS)
6.48
EDP number
581117
Flute count (NOF)
2
Flute Geometry (FDC)
Spiral Point Geometry
Hand (Cutting direction)
Right
Material
HSS-E-PM
Material application
N - Non-ferrous metals, P - Steel and cast steel
MID number
5974027
Ordering code ANSI
E0251/4
Overall length - fractional inch (OAL)
2.1/2
Overall length - inch (OAL)
2.5
Overall length - millimeter (OAL)
0.255
Premachined hole diameter - imperial (PHD)
N7
Premachined hole diameter - inch (PHD)
0.2008
Premachined hole diameter - millimeter (PHD)
5.1
Shank
Cylindrical shank with Square
Tap chamfer style (TCS)
B 3.5 - 5
Thread diameter - millimeter (TD)
N7
Thread diameter size (TDZ)
1/4
Thread form (THFT)
UNC - Unified Coarse
Threading length - inch (THL)
0.5075
Threads per inch (TPI)
20
Tolerance limit
H3
Usable length (ULDR)
2.5
Usable Length - inch (LU)
1.0073
Spiral point tap with chamfer form B with a 3.5-5xP plug lead, for Unified National Coarse thread UNC 1/4" with 20 TPI and 3B class of fit with H3 pitch diameter limits, dimensions according to ANSI standard with 0.2550" shank and 0.1910" square drive, powder metallurgical HSS-E with bright finish for 2.5xD through hole threading in free machining and plain carbon steel and wrought or cast aluminium and copper or copper alloys.
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