YMW Zelx NI STI 1/4"-28 H2 PLUG STI Spiral Pointed Tap
YMW Zelx NI STI  1/4-28 H2 PLUG STI Spiral Pointed Tap

YMW Zelx NI STI 1/4"-28 H2 PLUG STI Spiral Pointed Tap

Item #: 12-015-588
Brand: YMW
Size Type: ANSI
Thread Size: 1/4"-28
Type: Spiral Pointed ZELX NI STI

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Applications

  • Designed for extended tap life in Cobalt, Nickel and Iron base exotic materials such as: Inconel, Hastelloy, Waspalloy and harder Stainless Steels, Mold and Tool Steels >30HRC.
  • STI taps are oversize to the extent that the internal thread which they produce will accommodate a helical coil wire screw thread insert, which at final assembly will accept a screw thread of the nominal size and pitch.

Features

  • Taps have an oxide and nitride surface toughening treatment.
Product Specifications
Brand YMW
Size Type ANSI
Thread Size 1/4"-28
Type Spiral Pointed ZELX NI STI
Limit H2
Chamfer Style Plug
No. of Flutes 3
Finish Coating Oxide Nitride Surface Toughening Treatment
Chamfer 3-5
Coating Oxide Nitride Surface Toughening Treatment
Cutting Direction Right Hand
Drill Size 17/64"
Flute Shape Spiral Pointed
General Application Screw Thread Insert Tapping
Hole Style Through Hole
Model # 387249
Overall Length 2-23/32"
Pitch 28
Pitch Form & Profile 60°
Pitch Tolerance +.00025"/-.00000"
Size 1/4"
Prop. 65 Yes
Size_Combination 1/4"-28
Thread Length 0.669"
Thread Type Screw Thread
Tolerance Class UNF
Tolerance_Cutter Diameter ±.31"
Tolerance_Cutting Diameter ±.31"
Tolerance_Overall Length ±.31"
Tolerance_Shank -.0015"
Tolerance_Shank Square -.004"
Tool Material Vanadium High Speed Steel
Workpiece Material Cobalt, Nickel and Iron base exotic materials such as: Inconel Hastelloy, Waspalloy and harder Stainless Steels, Mold and Tool Steels.
weight 0.25 lbs
Type of Hole Through Hole
Country of Origin JAPAN
Shipping Restrictions UPS SHIP (DROP SHIP ITEM)
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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