Socket Housings. Single and double row crimp socket shells which mate with 2mm pitch headers. M22-301 Series SIL housings mate with M22-201/203 Series headers typical stock nos. ; 681-3287 681-3287 and ; 681-3316 681-3316 respectively M22-302 Series DIL housings mate with M22-202/204 Series headers typical stock nos. ; 681-3297 681-3297 and ; 681-3326 681-3326 respectively Shells accept crimp terminals stock nos. ; 547-3245 547-3245 (tin plate) or ; 547-3289 547-3289 (gold plate)