The MTK Cylindrical "PI" RFI/EMI Filter current is 10 Amps 100 VDC 80 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: 2.25
Length:   3.88
A:  .56
B:  .69
C:  .69
Thread:  1 1/8-18
Flats: 1.062
Terminal Hole Size:  
Terminal Thread Size: 8-32