Catalog number Trade size
(inch)
I.D.
(mm)
A
(mm)
B
(mm)
C
(mm)
D
(mm)
RSC
CNS 2606-C4060
JIS C 8305 
CNS
1302-K3006 
Packing pcs
P21020400 1/2" 14.5 35.0 22.0 10.5 22.4 G 16 16 50
P21020600 3/4" 19.5 42.0 27.0 14.0 27.2 G 22 20 50
P21021000 1" 25.0 48.5 31.0 15.5 34.5 G 28 28 25
P21021200 1-1/4" 33.5 59.0 34.5 18.0 42.6 G 36 35 25
P21021400 1-1/2" 38.5 68.0 36.5 21.5 48.6 G 42 41 20
P21022000 2" 49.5 82.5 43.0 24.0 60.8 G 54 52 10
P21022400 2-1/2" 60.0 93.5 36.0 24.0 76.8 G 70 65 1
P21023000 3" 75.0 110.0 36.0 24.0 90.0 G 82 80 1
P21024000 4" 97.0 137.0 36.0 24.0 115.0 G 104 100 1