The List
There are 185 6 letter words with K as the last letter. The highest scoring is MUZJIK at 28 points in Scrabble. 1 of them contain no vowel at all: TSKTSK.
ANORAKANTICKARRACKASPICKATABEKATTACKATTASKAWRACKBAROCKBATTIKBEDECKBEDUCKBEGUNKBEMOCKBETOOKBEYLIKBIPACKBOGOAKBOHUNKBOSBOKBYTALKBYWORKCARACKCHABUKCHIACKCHYACKCOPECKCROJIKDAMASKDEBARKDEBEAKDEBUNKDEMARKDETICKDIBBUKDIKDIKDYBBUKEIRACKEMBANKEMBARKEMBOSKENLINKENLOCKENRANKGALYAKHAIDUKHIJACKIMBARKIMBOSKIMMASKIMPARKINLOCKINWICKINWORKJAMBOKKALPAKKATHAKKOPECKKUDLIKLEBBEKMAMLUKMEDICKMELICKMOCOCKMOCUCKMOHAWKMOUJIKMUKLUKMUKTUKMUSICKMUZHIKMUZJIKNANOOKNEBBUKNEBECKNUBUCKNUDNIKOOMIAKOUTASKPACHAKPADAUKPADOUKPAIOCKPAJOCKPANICKPANISKPHREAKPONDOKPRANCKPRUSIKREBACKREBECKREBOOKRECOCKRECOOKRECORKREDOCKREEBOKRELINKRELOCKRELOOKREMARKREPACKREPARKREPERKRERACKRESEEKRESOAKRETACKRETOOKREWORKRHEBOKRIPECKRYPECKSANDEKSANJAKSCHRIKSCHTIKSCREAKSHLOCKSHMOCKSHMUCKSHNOOKSHRANKSHREEKSHREIKSHRIEKSHRINKSHRUNKSHTICKSHTOOKSHTUCKSKRONKSPRACKSPRUIKSQUARKSQUAWKSQUEAKSTANCKSTRACKSTRAIKSTREAKSTREEKSTRICKSTROOKSTRUCKSUSLIKTAMBAKTCHICKTHWACKTISICKTOMBAKTSKTSKTUGRIKUMIACKUNBARKUNCOCKUNCORKUNDECKUNDOCKUNHOOKUNHUSKUNKINKUNLINKUNLOCKUNMASKUNMEEKUNPACKUNPICKUNSUNKUNTACKUNTUCKUNWORKUPLINKUPLOCKUPLOOKUPTALKUPTICKUPTOOKYAPOCKYASMAKZADDIKZAMBUKZEBECKZENDIK