Tube has multiple perferations; 4130 steel alloy
No other part numbers with same form, fit, and function found.
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 5985-01-394-5373
NSN 6240-01-596-0723
NSN 2925-00-837-3948
NSN 5975-00-054-9372
NSN 5996-00-981-9480
NSN 5996-01-241-5255
NSN 5985-01-244-6180
NSN 6240-01-645-4797
NSN 5855-01-134-7106
NSN 5945-00-259-3206
NSN 6105-00-858-6873
NSN 4140-00-137-2493