Astm a615 grade 60 or a996 grade 50, bar designator no. 4
Classification: Concrete reinforcing bars and rods, iron or nonalloy steel, not further worked than hot-rolled or hot-drawn, including those twisted after rolling
NSN 6130-01-485-1629
NSN 6320-00-405-2348
NSN 5975-01-495-6406
NSN 6145-01-469-4079
NSN 6105-01-571-7371
NSN 5975-01-109-6663
NSN 6650-01-008-0724
NSN 6620-01-171-9597
NSN 6645-00-574-9712
NSN 5999-01-491-8708
NSN 5996-01-158-2531
NSN 6610-00-036-9878