Yes, SPRAGS is a Scrabble word!

Letter values in Scrabble US: S 1, P 3, R 1, A 1, G 2, S 1.

Is it a valid word?

SPRAGS is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

a chock or bar wedged under a wheel or between the spokes to prevent a vehicle from rolling down an incline
a wooden prop used to support the roof of a mine

Not playable in Scrabble US: PITPROP.