MIL-R-81841, MILITARY SPECIFICATION: ROTARY FLAP PEENING OF METAL PARTS (09-FEB-1972) [by S/S by SAE-AMS2590]

MIL-R-81841, MILITARY SPECIFICATION: ROTARY FLAP PEENING OF METAL PARTS (09-FEB-1972) [s/s by S/S by SAE-AMS2590]., This specification covers procedures and requirements for peening of metal parts with portable bonded-shot rotary flap wheels (see 6.1).