You can make 274 valid words from the letters in SCRAMJET using the Scrabble US/CAN dictionary.
How many points is SCRAMJET worth in Scrabble?
SCRAMJET is worth 19 points in Scrabble (US/CAN) and 23 points in Words With Friends.
How do I use the Word Unscrambler tool?
Enter any letters into the input box and press Search. The tool will return every valid English word that can be made from those letters using the dictionary you select.