[Diameter 5 x Length 20mm Stainless Steel 30pcs]
[Diameter 4 x Length 15mm Steel 60pcs]
Strength Classification: Equivalent to A2-70; JIS B1177 standard; The head is not on the surface for a clean finish. It can be tightened with a hex wrench, making it ideal for machine assembly.
●頭が表面にでないため、きれいに仕上がります。
六角レンチで締められるので機械組み立てに最適です