MRC:
A recording of the physical,functional,and performance characteristics for an item of supply.TEXT
General Description:
Steel, sae 4130 to sae 4142; rockwell harden to c36-40 w/double temper and cold treatment of m100 degrees f between tempers; two tubes, two rings into an inseparable weldment; flange 14.000 in. Od; forty eight equidistant holes 0.394 in. Min 0.403 in. Maximum diameter on a 12.000 in. Bolt circles; 16 microinch finish on selected surfaces only; smaller tube threaded one end 5.000-12un-3a; balancing reqd in several planes after manufacturing w/unbalance less than 2 gram-inches; black oxide finish, mil-c-13924, cl 4 on selected surfaces only
