Type 1

Type 2

Code A
(mm)
B
(mm)
C
(mm)
 NM 16*1.5 S24 8 M 16*1.5
 NM 16*2 S24 8 M 16*2
 NI 5/8″11UNC S26 9 5/8″
 NM 24*1.5 S36 10 M 24*1.5
 NI 1″-8 S38 14 1″-8
 NM 38 53 12 M 38*1.5

 = Type 1

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