Material A2 or A4: Hex bolts UNC 1/2" x 1-3/4" 100 pcs 1/2" x 1-1/2" 100 pcs 3/8" x 1-1/4" 200 pcs Hex nuts UNC 3/8" 400 pcs. 1/2" 300 pcs. 5/8" 300 pcs. Flat washer UNC 3/8" 400 pcs. 1/2" 300 pcs. 5/8" 300 pcs. Threaded rods UNC A2 / A4 (3ft) 3/8" 30 pcs 1/2" 30 pcs. 5/8" 30 pcs.