維勳螺絲股份有限公司

鑽孔無屑絲攻美制粗牙(UNC)參考

無屑絲攻美制粗牙(UNC)

無屑美粗牙UNC 牙數 下料孔徑
NO.1 64 1.7
NO.2 56 2
NO.3 48 2.25
NO.4 40 2.55
NO.5 40 2.9
NO.6 32 3.15
NO.8 32 3.8
NO.10 24 4.35
NO.12 24 5
1/4 20 5.75
5/16 18 7.3
3/8 16 8.8
7/16 14 10.3
1/2 13 11.8