a.Diameters of Electodes

Nominal Dia.	Max.	Min.
350	357	352
400	409	403
450	460	454
500	511	505
550	562	556
600	613	607
650	663	657
700	714	708
750	765	759
800	816	810

b.Lengths of Electrodes

Nominal Length	Max.	Min.
1,500	1,550	1,400
1,800	1,875	1,700
2,100	2,175	1,975
2,400	2,475	2,275
2,700	2,850	2,550

c.Depths of Sockets and Lengths of Nipples

Designation of Nipple	Depth of socket(mm)	Lengths of Nipples(mm)
14T4, 14T3, 16T4, 16T4L, 16T3, 16T3L, 18T4, 18T3, 18T3L, 20T4, 20T4L, 20T3, 22T4, 22T3, 24T4, 24T4L, 26T4L, 28T4L, 30T4L, 32T4L	+4 -3	0 -4