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      Victory™ Solid Carbide Thread Mills • Blind and Through Holes
      Victory™ Solid Carbide Thread Mills • Blind and Through Holes
      Victory™ Solid Carbide Thread Mills • Blind and Through Holes
      Victory™ Solid Carbide Thread Mills • Blind and Through Holes

      GTM21 • Inch UNC • Through Coolant

      Victory™ Solid Carbide Thread Mills • Blind and Through Holes

      Metric
      Inch
      SAP Material Number 4138531
      ISO Catalog Number GTM215018
      ANSI Catalog Number GTM215018
      Grade WU12PV
      [TDZ] Thread Diameter Size 5/16-18
      [D1] Effective Cutting Diameter 6.1500
      [D1] Effective Cutting Diameter .2421
      [DCH] Chamfer Diameter 8.2500
      [DCH] Chamfer Diameter .3248
      [LTHD] Thread Length 16.2600
      [LTHD] Thread Length .6402
      [LDCH] Chamfer Length-Tool Front 17.1900
      [LDCH] Chamfer Length-Tool Front .6768
      [L] Overall Length 74.0000
      [L] Overall Length 2.913
      [LS] Shank Length 40.0
      [LS] Shank Length 1.574
      [D] Adapter / Shank / Bore Diameter 10.0
      [D] Adapter / Shank / Bore Diameter .3937
      Number of Effective Cutting Edges on Face 3
      See all Product Variants

      Uses and application

      • Counter Sinking/ Stroke ChamferingCounter Sinking/ Stroke Chamfering
      • Threading: Through HoleThreading: Through Hole
      • Threading: Blind HoleThreading: Blind Hole
      • HMHM
      • Drilling Depth: 2xDrilling Depth: 2x
      • Through Coolant: Axial: TappingThrough Coolant: Axial: Tapping
      • Manufacturer’s Specs: UNCManufacturer’s Specs: UNC
      • Manufacturer’s Specs: UNFManufacturer’s Specs: UNF

      Workpiece Materials

      P Steel
      M Stainless Steel
      K Cast Iron
      N Non-Ferrous
      S High-Temp Alloys

      Grades

      • WU12PV

        Coated carbide. PVD fine-grain carbide substrate with high-hardness TiCN coating.
        Universal grade for thread milling most materials.

        P Steel
        M Stainless Steel
        K Cast Iron
        N Non-Ferrous
        S High-Temp Alloys
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