GY-Hexagonal Die

Our professional-grade threading dies are engineered for precision and durability in heavy-duty applications. Available in both Round and Square configurations, these tools are designed to create clean, accurate external threads on a variety of workpieces.

Key Features

  • Premium Material Construction: Manufactured from Special Tool Steel to provide maximum durability and performance during heavy-duty threading tasks.
  • High Hardness Rating: Heat-treated to a hardness of 58° to 60° HRC, ensuring the cutting edges remain sharp and resistant to wear over time.
  • Versatile Design Options: Available in both Solid and Split configurations to accommodate different machining preferences and precision requirements.
  • Comprehensive Thread Standard Support: Compatible with a wide array of international standards including MM, BSW, BSF, UNF, and UNC.
  • Extensive Size Range: Covers a broad spectrum of dimensions, with screwing sizes starting at 3x.5 MM (1/8″) and extending up to 3″.
  • Precision Engineering: Dimensional specifications are meticulously charted, with “Across Flats” measurements ranging from 0.710″ to 5.180″ to ensure an accurate fit.

Technical Specifications

We offer a diverse range of configurations to meet specific threading requirements:
Screwing Size MM Screwing Size Inches Threads Per Inch A Size Across Flats Inches B Thickness Inches
BSW BSF UNF UNC
3x.5 1/8 40 —- —- —- 0.710 1/4
4x.7 5/32 32 —- —- —- 0.710 1/4
5x.8 3/16 24 32 —- —- 0.710 1/4
6×1.0 7/32 24 28 —- —- 0.710 1/4
—- 1/4 20 26 28 20 0.710 1/4
7×1.0 9/32 20 26 —- —- 0.820 5/16
8×1.25 5/16 18 22 24 18 0.820 5/16
10×1.5 3/8 16 20 24 16 0.920 3/8
11×1.5 7/16 14 18 20 14 1.010 7/16
12×1.75 1/2 12 16 20 13 1.100 1/2
14×2.0 9/16 12 16 18 12 1.300 5/8
16×2.0 5/8 11 14 18 11 1.300 5/8
18×2.5 3/4 10 12 16 10 1.480 11/16
20×2.5 13/16 10 12 16 —- 1.480 11/16
22×2.5 7/8 9 11 14 9 1.670 13/16
24×3.0 1 8 10 12 8 2.050 15/16
27×3.0 1-1/8 7 9 12 7 2.220 1-1/16
30×3.5 1-1/4 7 9 12 7 2.220 1-1/16
33×3.5 1-3/8 6 8 12 6 2.580 1-1/8
36×4.0 1-1/2 6 8 —- 6 2.760 1-1/4
39×4.0 1-5/8 5 8 —- —- 3.150 1-3/8
42×4.5 1-3/4 5 7 —- 5 3.150 1-3/8
45×4.5 1-7/8 4½ 7 —- — 3.150 1-3/8
50×5.0 2 4½ 7 —- 4½ 3.330 1-3/4
—- 2-1/4 4 6 —- —- 3.890 1-3/4
—- 2-1/2 4 6 — —- 4.530 1-3/4
—- 2-3/4 3½ 5 —- —- 4.530 1-3/4
—- 3 3½ 5 —- —- 5.180 2

Customization & Support

  • Bespoke Sets: Special sizes of complete sets can be supplied against specific orders to match your unique technical requirements.
  • Flexible Packaging: We can supply different sizes and styles of boxes based on customer preferences.
Whether you are performing maintenance, automotive repair, or industrial manufacturing, these tap and die sets provide the accuracy and reliability needed for clean, professional threads every time.