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 6220-01-070-2772
NSN 6620-01-102-0008
NSN 6645-00-754-4108
NSN 5905-01-510-9397
NSN 5998-01-041-2749
NSN 5915-01-050-9080
NSN 7035-00-018-0350
NSN 5975-01-431-4347
NSN 6610-00-322-7873
NSN 5920-01-512-6800
NSN 7035-00-349-8571
NSN 5996-01-308-7987