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No 2 Grommet Punching Die 20/64" - 8.5 mm KLP0002DEL
🌍 Recommendation for International Use
In countries like the USA and the UK that use inch-based systems, or when working with imported equipment, M6 metric threads are more commonly used. For compatibility with international machinery and standards, it is recommended to choose M6 or its closest inch equivalent (1/4"-20 UNC).
📌 Recommendation for Turkey
In Turkey, M8 metric threads are more commonly used in manufacturing and assembly. Choosing M8 provides easier sourcing and compatibility with locally available machines and tools.
he approximate inch (UNC) equivalents of M6 and M8 metric thread sizes help you compare diameters when working on international projects or with imported equipment. However, since the thread pitches and standards differ, metric and inch threads are not interchangeable — they only provide approximate diameter equivalence.
🔹 M6 (~6 mm diameter)
M6 outer diameter: 6 mm → 6 / 25.4 ≈ 0.236 inch
Closest UNC size: 1/4"-20 UNC
1/4" outer diameter ≈ 0.250 inch → slightly larger than M6.
20 TPI (threads per inch) → Thread pitch ≈ 1.27 mm.
🔹 M8 (~8 mm diameter)
M8 outer diameter: 8 mm → 8 / 25.4 ≈ 0.315 inch
Closest UNC size: 5/16"-18 UNC
5/16" outer diameter ≈ 0.3125 inch → very close to M8.
18 TPI → Thread pitch ≈ 1.41 mm.
🔎 Thread Pitch Comparison (approximate)
M6 standard pitch → 1.0 mm → 25.4 / 1.0 = 25.4 TPI equivalent.
M8 standard pitch → 1.25 mm → 25.4 / 1.25 = 20.32 TPI equivalent.
As you can see, while 1/4"-20 and 5/16"-18 UNC sizes are similar in diameter to M6 and M8 respectively, the thread pitches (TPI) and profiles differ. Therefore, they are not mechanically compatible — they only offer an approximate comparison.
- : In Stock, Ready to Ship!
- Product Code: KLP0002DEL
- SKU: KLP0002DEL
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