Fasteners with NPT Thread in Stainless steel 50 pcs. 3/8 "-18 nuts 50 pcs. 3/8 -18 lock nuts 100 pcs. 1/2 flat washers 50 pcs. 1/2 grower washers 50 pcs. 1/4 "- 20 nuts 25 pcs. 1/4 "- 20 lock nuts 100 pcs. 1/4 " flat washers 50 pcs. 1/4 " grower washers