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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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