Material Ordering Data – MIL-T-1368

This document is Material Ordering Data for seamless and welded nickel-copper alloy tubing, specified under MIL-T-1368 (dated 18 March 1958, Amendment 4, dated 12 December 2000). The ordering data establishes specifications for tubing procured under Contract Line Item Number (CLIN) 0016, identified by IDN N4523A 5354-9707 and ICN 38LNG51714.

The specified product is Class A, 3" NPS seamless and welded nickel-copper alloy tubing with an outside diameter of 3.500 inches and wall thickness of 0.438 inches, provided in 1-foot lengths. The tubing is not intended for silver brazing. End finish must be sawed or machine cut and debarred, with continuous material marking required. Surface irregularities are not permitted. Sampling shall follow specification paragraphs 4.3.1 and 4.3.2. No special requirements apply. Level C packing is required. The document includes detailed tables (Table VI) specifying commercially available pipe sizes with nominal wall thicknesses, outside diameters, and weights, as well as supplementary specifications for double extra heavy tubing and additional sizing configurations to support procurement and quality assurance requirements.