YMW 1/2"-20 H3 3 Flute Vanadium High Speed Steel Spiral Pointed Plug Tap

YMW 1/2"-20 H3 3 Flute Vanadium High Speed Steel Spiral Pointed Plug Tap

Item #: 12-014-368
Brand: YMW
Size Type: ANSI
Thread Size: 1/2"-20
Thread Limit: H3

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Unique design increases productivity through longer tool life


  • Necked design enhances flow of cutting fluid to cutting teeth & reduces surface contact between the tool & workpiece for more efficient threading.


  • For stainless steels, alloy steels and ductile irons.
  • Designed for difficult jobs including the stainless steel family of materials as well as alloys steels, high carbon steel and ductile irons.
  • Suitable for tapping 303, 304, 410 stainless steel and 8740 (SNCM240).
  • For through holes.
  • Suitable for UNJ Aerospace internal threading applications.


  • 3 to 5 threads chamfered.
Product Specifications
Brand YMW
Size Type ANSI
Thread Size 1/2"-20
Thread Limit H3
Chamfer Style Plug
No. of Flutes 3
Finish Coating Black Oxide
Tool Material Vanadium High Speed Steel
Cutting Direction Right Hand
Coolant Fed No
Chamfer 3 - 5 threads
Coolant Through No
Flute Length .045"
Flute Shape Straight Flute
Hole Style Through Holes
Material To Be Machined Stainless steel family as well as alloy steels, high carbon steel & ductile irons
Limit H3
Model # 382622
Overall Length 3.375"
No. of Threads Per Inch 20
Pitch Diameter .448 - .510
Pitch Tolerance +.00025" / -.00000"
Prop. 65 Yes
Pitch 20
Series ZELX SS
Shank Diameter 0.367"
Pitch Form & Profile 60°
Shank Type Square Shank
Size 1/2"
Square Length 0.44"
Square Size 0.275"
Style Spiral Pointed Plug Tap
Thread Length 0.984"
Size_Combination 1/2"-20
Thread Type 60°
Threads Per Inch 20
Tolerance Class UNF
Tolerance_Flute Length ± .063"
Tolerance_Overall Length ± .031"
Tolerance_Shank -.0015"
Tolerance_Shank Square -.004"
Type Spiral Pointed Plug Tap
Weight 0.1 lbs.
Country of Origin JAPAN
Tool Coolant Feeding No
Prop 65 Warning Many metalworking products do contain metals that are included in the latest Prop 65 warning. Exposure to the elements can be harmful. May cause cancer and reproductive harm.

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