ARMY TM 9-6115-670-14&P H-11/H-12 (blank) Table H-9.  Parts, Materials, and Specifications No Part Material Specifications NSN 1 Pressure Gauge, Full Scale — Full scale More than 4267 psi (26.9 MPa) 2 Gasket Copper ISO 3 Flange Carbon Steel for Machine Use C45, C45EF4, or, C45M2 ISO 4 Hex Nut Carbon Steel for Machine Use C45, C45EF4, or  C45M2 ISO 5 Injection Pipe Chromium Steel Pipe for High Pressure Service 2604 (C)-75, 9329(1)-89 Table H-10.  Chamfer and Fine Finish Requirements No Chamfer Fine Finish 6 0.02 in. (0.05 mm) — 7 — 250 m in. (6.3 m mm)