| 
					 
						代号
					 
				 | 
				
					 
						基本直径
					 
				 | 
				
					 
						近似螺距
					 
				 | 
				
					 
						D
					 
					
						f10
					 
				 | 
				
					 
						E
					 
					
						js12
					 
				 | 
				
					 
						c
					 
				 | 
				
					 
						b
					 
				 | 
				
					 
						a
					 
				 | 
				
					 
						最少完整
					 
					
						螺纹牙数
					 
				 | 
				
					 
						最小完整
					 
					
						牙的长度
					 
				 | 
				
					 
						基面距
					 
				 | 
			
| 
					 
						1/16
					 
				 | 
				
					 
						7.723
					 
				 | 
				
					 
						0.907
					 
				 | 
				
					 
						25
					 
				 | 
				
					 
						11
					 
				 | 
				
					 
						1.0
					 
				 | 
				
					 
						5
					 
				 | 
				
					 
						1
					 
				 | 
				
					 
						61/8
					 
				 | 
				
					 
						5.6
					 
				 | 
				
					 
						4
					 
				 | 
			
| 
					 
						1/8
					 
				 | 
				
					 
						9.728
					 
				 | 
				
					 
						30
					 
				 | 
			||||||||
| 
					 
						1/4
					 
				 | 
				
					 
						13.157
					 
				 | 
				
					 
						1.337
					 
				 | 
				
					 
						38
					 
				 | 
				
					 
						14
					 
				 | 
				
					 
						1.2
					 
				 | 
				
					 
						6
					 
				 | 
				
					 
						61/4
					 
				 | 
				
					 
						8.4
					 
				 | 
				
					 
						6
					 
				 | 
			|
| 
					 
						3/8
					 
				 | 
				
					 
						16.662
					 
				 | 
				
					 
						45
					 
				 | 
				
					 
						18
					 
				 | 
				
					 
						61/2
					 
				 | 
				
					 
						8.8
					 
				 | 
				
					 
						6.4
					 
				 | 
			||||
| 
					 
						1/2
					 
				 | 
				
					 
						20.955
					 
				 | 
				
					 
						1.814
					 
				 | 
				
					 
						45
					 
				 | 
				
					 
						22
					 
				 | 
				
					 
						1.5
					 
				 | 
				
					 
						8
					 
				 | 
				
					 
						2
					 
				 | 
				
					 
						61/4
					 
				 | 
				
					 
						11.4
					 
				 | 
				
					 
						8.2
					 
				 | 
			
| 
					 
						3/4
					 
				 | 
				
					 
						26.441
					 
				 | 
				
					 
						55
					 
				 | 
				
					 
						7
					 
				 | 
				
					 
						12.7
					 
				 | 
				
					 
						9.5
					 
				 | 
			|||||
| 
					 
						1
					 
				 | 
				
					 
						33.249
					 
				 | 
				
					 
						2.309
					 
				 | 
				
					 
						65
					 
				 | 
				
					 
						25
					 
				 | 
				
					 
						1.8
					 
				 | 
				
					 
						61/4
					 
				 | 
				
					 
						14.5
					 
				 | 
				
					 
						10.4
					 
				 | 
			||
| 
					 
						11/4
					 
				 | 
				
					 
						41.910
					 
				 | 
				
					 
						75
					 
				 | 
				
					 
						30
					 
				 | 
				
					 
						71/4
					 
				 | 
				
					 
						16.8
					 
				 | 
				
					 
						12.7
					 
				 | 
			||||
| 
					 
						11/2
					 
				 | 
				
					 
						47.803
					 
				 | 
				
					 
						90
					 
				 | 
				
					 
						2.0
					 
				 | 
			|||||||
| 
					 
						2
					 
				 | 
				
					 
						59.614
					 
				 | 
				
					 
						105
					 
				 | 
				
					 
						36
					 
				 | 
				
					 
						2.5
					 
				 | 
				
					 
						10
					 
				 | 
				
					 
						91/8
					 
				 | 
				
					 
						21.1
					 
				 | 
				
					 
						15.9
					 
				 | 
			
注:最少完整螺纹牙数、最小完整牙的长度和基面距均为螺纹尺寸,仅供板牙设计时参考。