英制和公制螺纹对照表

规格直径UNC牙数/寸 通用命名标准

UNF牙数/寸统一标准BSW牙数/寸

BSF牙数/寸

0# 1.52/80//1# 1.856472//2# 2.185664//3# 2.514856//4# 2.844048//5#,(1/8”) 3.18404440/6# 3.513240//8# 4.173236//10#(3/16”) 4.832432243212#(7/32”) 5.492428/281/4” 6.35202820265/16”7.94182418223/8”9.53162016207/16”11.11142014181/2”12.70131812169/16”14.29121812165/8”15.8811/111411/16”17.46/1611143/4”19.0510/101213/16”20.64/14//7/8”22.239/91115/16”23.81/12//1”25.408128101 1/8”28.58712791 1/4”31.75712791 3/8”34.93612/81 1/2"38.10612681 5/8”41.28///81 3/4”44.455

/571 7/8”47.63///2”

50.80

4.5

/

5

7

标准国别美制ANSI BI.1-1982英国标准BS84-1956英、美制标准螺纹直径、螺距参照系列表