ASTM A 183 - 03 (Reapproved 2009) Standard Specification for Carbon Steel Track Bolts and Nuts

American Society for Testing and Materials (ASTM). Current edition approved April 1, 2009. Published May 2009. 5p. This specification covers carbon steel track bolts and carbon steel nuts for use in conjunction with joint bars to connect rails in railroad track.
Two grades of track bolts are defined:
- Grade 1, Low-Carbon, Untreated, primarily for industrial and mine track use.
- Grade 2, Heat-Treated, for general track use.
Two grades of nuts are defined:
- Grade 1, Low-Carbon or Soft Steel, primarily for application on Grade 1 track bolts.
- Grade 2, Medium-Carbon, for general application on track bolts.