MRC:
A recording of the physical,functional,and performance characteristics for an item of supply.TEXT
General Description:
Steel chrome-molybdenum, 4140, per MIL-S-5626, normalized chromium plated per QQ-C-320, class 2, type 2, 0.002 in Min thk 0.004 in Maximum thk heat treated per MIL-H-6875 to rockwell c scale 40.0 min 46.0 max 7.500 in lg 2.990 in Min 2.992 in Maximum w 1.740 in Min 1.742 in Maximum h 3 holes one end ctr 1.000 in Fm one edge along w ctr 1.000 in Apart ctr hole tapped 0.875-14UNF-2B, 1.000 in Min 1.240 in Maximum dp 2 holes tapped 0.190-32UNF-2B, 0.380 in Min 0.620 in Maximum dp 4 grooves 0.045 in Min 0.075 in Maximum dp 4 sides across w 0.620 in Radius inside chamfer 45.0 deg: opposite thd end 0.120 in W and 4 edges along lg 0.060 in Min 0.063 in Maximum w groove ctrs fm non-thd end: 1.600 in 1ST, 3.000 in 2ND, 4.500 in 3RD, 5.900 in 4TH; nickel plated per MIL-C-26074, class 2, grade b 0.0005 in Min thk under chromium plating
