Astm-a-519 type 4140
A straight, hollow product, welded or seamless, of round, square, or any other cross section and continuous periphery, which does not conform in cross sectional dimensions to recognized pipe standards, or those in tables 1 through 10, appendix c, fiig a004a. It is designed to convey fluids, gasses, and/or semisolids. It may be rolled into coils for ease in handling. For items designed to join a tube or tube fitting to another tube, pipe, or hose or fitting, see adapter (as modified); coupling (as modified); or nipple (as modified). Excludes tube, bent (as modified); pipe, metallic; spacer, sleeve; metal bar (hollow); and items with fittings, except end protectors.
Classification: Other tubes, pipes and hollow profiles, seamless, circular cross-section, iron or nonalloy steel, cold-drawn or cold-rolled
NSN 5950-01-656-6171
NSN 6650-00-217-6292
NSN 6150-01-314-6062
NSN 5950-01-187-4761
NSN 5910-01-390-5172
NSN 6110-01-459-7236
NSN 5998-01-236-0013
NSN 7035-01-166-1141
NSN 6135-01-503-1688
NSN 5915-00-493-1740
NSN 5930-01-348-7194
NSN 6220-01-100-2703