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1/4"-20 UNC HSS-E Spiral Flute Tap, 0.255" Shank x 0.433" Thread Length, 2.5XD, Mod. Bottoming, 2 Flute, GH3, Uncoated

Part # 03-01851/4-20 SP FL ALUMINUM TAP
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* All prices and specifications subject to change without notice. Actual product appearance & included accessories may differ.
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Iso Material Chart
Primary Workpiece Material
N - Aluminum
Technical specifications

System of Measurement

Inch - ANSI

Thread Series

UNC - Unified Natl. Coarse

Thread Size

1/4"-20

Tap Type

Spiral Flute

Chamfer Type

Modified Bottoming

Shank Type

Square

Material

HSS-E

Coating

Uncoated

[TPI] Threads per Inch

20 tpi

Tap Drill Diameter

0.205 in

[ØDC] Cutting Diameter

0.25 in

[ØDMM] Shank Diameter

0.255 in

[L2] Chamfer Length

2P - 3P

[L1] Thread Length

0.433 in

[LU] Usable Length

1.0 in

[OAL] Overall Length

2.5 in

[SS] Square Size

0.191 in

[NOF] Number of Flutes

2

[FHA°] Helix Angle

50

Length / Diameter

2.5 X D

Thread Class

GH3

Through Spindle Coolant

No

Weight

0.1 lbs \ 0.1 kg

Country of Origin

South Korea
Technical Images
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