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 5925-00-208-5637
NSN 5950-00-769-5116
NSN 5930-01-658-0362
NSN 5999-00-378-0931
NSN 6110-01-578-0920
NSN 7035-01-038-3165
NSN 5930-01-177-3773
NSN 5999-00-461-4099
NSN 6610-01-252-8201
NSN 5895-00-179-3950
NSN 5910-01-113-6636
NSN 6135-00-050-0916