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427X21 High-Performance Spiral-Flute Taps for Multiple Materials

$40.34

Bulk orders will be discounted, please contact us.

The THL coating on these taps protects them from wear and provides better chip formation than TiN and TiCN coatings. THL-coated taps are suitable for threading high-speed steel, cast iron, and aluminum alloys, and they can be used with or without coolant. These taps meet DIN length standards and have a longer overall length than taps that meet ISO, ANSI, and JIS length standards. They also meet ANSI shank standards, which means they measure their shank diameter in inches and fit in standard tools used in the U.S.

Product Number: 427X21

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  • Description
Mfr Model AS2351005-UNF1/4
Thread Size 1/4"-28
Tap Material High Speed Steel
Tap Finish TiN/VAP
Thread Length 5/16 in
Overall Length 3-1/8 in
Thread Limit H3; H4
Number of Flutes 3
Tap Length Standard DIN
Tap Shank Standard DIN/ANSI
Primary Material Application Cast Iron; Stainless Steel; Steel
Thread Direction Right Hand
Coolant Fed Non-Coolant Through
Drill Bit Size 0.2170 in
Extended Neck Yes
Helix Angle 40 °
Material Grade Machining TIN/VAP
Measurement System Fractional Inch
Primary Material Application ISO Code K; M; P
Shank Dia 1/4 in
Shank Length 1-31/32 in
Square Size 0.1910 in
Standards DIN/ANSI
Tap Chamfer Modified Bottoming; Semi-Bottoming
Tap Style Spiral Flute
Tap Thread Size 1/4"-28
Threads per Inch 28
UNSPSC 27112806
Country of Origin India (subject to change)
Thread Standard UNF
Features For Long Chipping Materials
Shank Type Machining Weldon Flat
Secondary Material Application Aluminum; Brass; Bronze; Composite; Copper; Nickel; Titanium
Secondary Material Application ISO Code N; O; S
Spiral Direction Right Hand
Class of Fit 2B
Thread Pitch 1.75mm

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