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Thread Mill: High Temp/Hardness AlTiN, Carbide, Right Hand, 3/8"-24 Thread Size, 0.29 in Cutter Dia, 0.809 in Lg of Cut, UNF

Item # 311K243

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Product Specs

Finish/Coating: High Temp/Hardness AlTiN
Material: Carbide
Cutting Direction: Right Hand
Thread Size: 3/8"-24
Cutter Diameter: 0.29 in
Length of Cut: 0.809 in
Overall Length: 3 1⁄2 in
Shank Diameter: 5⁄16 in
Number of Flutes: 4
Thread Standard: UNF
Material Application (First Choice): Steel; Stainless Steel; Cast Iron; Heat-Resistant Alloys; Synthetic Materials & Graphite
Cutter Diameter Tolerance: +0.001 in/-0.001 in
Cutting Application: Thread Milling
Features: Full Profile; Extends Tool Life; Crest-Cutting
Material Application (Secondary Choice): Thermoplastics; Composites; Sheet Metal; Fiberglass
Material Application ISO Number (First Choice): P1; P2; P3; P4; P5; M1; M2; M3; S1; S2; S3; S4; K1; K2; K3; K4; N1; N2; N3; N4
Minimum Nominal Diameter: 3/8 in
Neck Diameter: 0.29 in
Neck Length: 0.809 in
Number of Coolant Holes: 0
Overall Length Tolerance: -0.05 in/+0.05 in
Powdered Metal Material: No
Shank Diameter Tolerance: -0.0001 in/+0.0005 in
Shank Length: 2.691 in
Shank Type: Plain Round
Specifications Met: ISO; ANSI
Thread Cutting Location: Internal
Thread Length Tolerance: -0.005 in/+0.005 in
Threads Per Inch: 24
Through Coolant: No
Tooth Type: Straight

Compliance and Restrictions

Country Of Origin

  • USA

About Thread Mills

Cut internal and external threads into an existing hole using these thread mills, which use helical interpolation to cut the threads. A single thread mill can thread a wide range of hole diameters, eliminating the need to change tools when threading multiple holes in different sizes. The mill starts cutting at the bottom of the hole and cuts as it spirals up and around the hole wall. Multiple teeth along the surface of the thread mill engage the entire hole wall for accurate milling of difficult materials such as stainless steel or Inconel. These tools are only usable in CNC machines that have helical interpolation capability.

These thread mills have straight flutes that can cut threads of more than one pitch.