The MTK Cylindrical "PI" RFI/EMI Filter current is 20 AmpS 100 VDC 40 DB MIN @ 0.15 MHZ and, is:
 
Designed, manufactured an tested to the applicable portions of MIL-F-157333.
Filter hermetically sealed.
Case: Metal, suitably plated to withstand corrosion.
 
Dimensions
Dia: 1.25
Length:  3.25
A:  .50
B:  .69
C:  .69
Thread:  5/8-24
Flats: .530
Terminal Hole Size:  
Terminal Thread Size: 8-32