Steel is composition 1649 or 1767
A standoff that must have a threaded end(s) or be internally threaded its full length. For items having external threads on both ends, see stud (as modified). For items with an outside contour that is the same for the entire length, are flat on top and bottom, having internal threads its full length, and the length does not exceed twice the width across the flats or outside diameter, see nut (as modified); use maximum dimensions(s) for compliance.
NSN 5945-00-896-0508
NSN 6240-00-603-6662
NSN 5910-00-495-4884
NSN 5999-00-791-5332
NSN 5985-01-538-5723
NSN 5950-01-354-6702
NSN 5855-00-149-0766
NSN 5835-01-564-5575
NSN 6650-01-304-4254
NSN 5950-01-168-5849
NSN 6135-01-327-2092
NSN 6150-01-196-0179