The MTK Cylindrical "PI" RFI/EMI Filter current is 20 Amps 100 VDC 60 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:   1.50
Length:  3.88
A:  .50
B:  .69
C:  .69
Thread:  3/4-20
Flats:  .656
Terminal Hole Size: 
Terminal Thread Size:  8-32