pozidrive....Can you clarify what you mean by "K". I guess it isn't Kelvin in this context.
Pozi, the poster is refering to US pounds (lbs.) of rated capacity. K is term for one thousand. 5K equals 5 thousand pounds.
From TRANSCOM loading guide on the C-130:
RESTRAINT:
1. Pallets are restrained to aircraft by detent locks. If pallet is properly built and nets installed correctly, no additional restraint is required.
2. Tie-down rings which have a 10,000 lb. rated capacity are installed in 20-inch grid pattern on the cargo floor.
3. 25,000 lb. tie-down rings are not available when dual rail system is installed. (Exception: Two, 25,000 lb. tie-down rings are located just forward of the ramp hinge.)
4. Tie-down rings located on aircraft ramp and cargo compartment walls have a rated strength of 5,000 lb.
5. Tie-down rings mounted on the aircraft dual rails at 10,000 lb.