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Recoil螺纹护套表示法
Recoil螺纹护套表示法  Recoil螺纹护套Part Number解读 

0     5    0   8     2   
一、First Digit = Product Group
0 = Inserts Bulk - Free Running
1 = Inserts Bulk - Self Locking
2 = Insert Packets (Free running only)

二、Second Digit = Thread Type
0 = BSF, BA
1 = BSP
2 = BSW
3 = UNC
4 = UNF, UNEF, UNS, ETC
5 = METRIC Coarse
6 = NPT, BSC, 8UN
7 = Metric Medium
8 = Metric Fine & Spark-Plug
9 = Tang break tool

三、Third and Fourth Digit = Thread Diameter
0 = size in 1/16”s (ie 08 = 1/2” )
1 = size in 1/16”s (ie 08 = 1/2” )
2 = size in 1/16”s (ie 08 = 1/2” )
3 = size in 1/16”s (ie 08 = 1/2” )
4 = size in 1/16”s (ie 08 = 1/2” )
5 = size in 1mm’s (ie 08 = 8mm )
6 = size in 1/16”s (ie 08 = 1/2” )
7 = size in 1mm’s (ie 08 = 8mm )
8 = size in 1mm’s (ie 08 = 8mm

四、Fifth Digit = Length
Length in 1/2 Diameters
2 = 1D
3=1.5D
4=2D
5=2.5D
6=3D
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