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33ZD04 Spiral-Flute STI Taps

$30.56Including tariffs

Bulk orders will be discounted, please contact us.

The black-oxide finish on these taps retains lubricants to improve the taps' wear resistance and chip flow. Black-oxide taps should only be used on ferrous metals. Cobalt taps are harder and provide more wear resistance when tapping hard materials at high speeds than high-speed steel taps.

Product Number: 33ZD04

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  • Description
Mfr Model 146201
Thread Size 1/4"-28
Tap Material High Speed Steel
Tap Finish Black Oxide
Thread Length 1/2 in
Overall Length 2-23/32 in
Thread Limit H2
Number of Flutes 3
Primary Material Application Stainless Steel; Steel
Thread Direction Right Hand
Coolant Fed Non-Coolant Through
Extended Neck Yes
Interrupted Thread No
Material Grade Machining 302
Measurement System Fractional Inch
Primary Material Application ISO Code M; P
Shank Dia 5/16 in
Shank Length 1-19/32 in
Square Size 0.2380 in
Standards DIN 2184-1
Tap Chamfer Bottoming
Tap Style Spiral Flute
Tap Thread Size 1/4"-28
Threads per Inch 28
UNSPSC 23153305
Country of Origin Brazil (subject to change)
Thread Standard UNF
Features OSG V-Coating; Powdered Metal VC-10 Substrate; Screw Thread Insert (STI) Tap; Steam Oxide Surface Treatment; STI Spiral Flute Tap For Difficult To Machine Materials
Shank Type Machining Straight
Secondary Material Application Stainless Steel
Secondary Material Application ISO Code M
Spiral Direction Right Hand
Class of Fit 3B
Thread Pitch 3.00mm

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