The MTK Cylindrical "PI" RFI/EMI military style filter current is 10 Amps 125 VAC 0-400 Hz 400 VDC 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
Style:  FL24
Military equivalent: M15733/2-0003
Dia:   1.250
Length:  3.875
A:  .375
B:  .25
C:  .25
Thread:  3/4-20
Flats:  .655
Terminal Type & Size:  1E solder lug
Terminal Thread Size: