High tensile bolts manufactured to Australian and International Standards have long been the product that Ajax has been proudest to put its headmark on. The range of the A9 product available is located in the online Earthmoving catalogue

A9 Super high tensile

A9 Deep Hex Head Super High Tensile bolts represent one of the highest strength bolts commercially available in Australia. The superior tensile strength is favoured for applications where the joint is subjected to very high service loads. A9 bolts were developed to be compatible with the requirements of crawler equipment manufacturers such as Caterpillar, Komatsu and John Deere, but the range has found to be suitable in a variety of applications that need high clamping force.

Carefully controlled manufacturing and quality procedures result in bolts that are capable of delivering all of the following benefits:

  • Extra strength: 180,000 lbf/in2 is 20% higher than SAE J 429 Grade 8
  • Increased head height: improves the wrenching surface during tensioning
  • Rounded thread roots: reduces the possibility of fatigue failure.
  • Zinc yellow plating: increased corrosion protection
  • Tempered steel: provides toughness without sacrificing strength

  • AS 1110 / ISO 4014 M6 – M33 diameter
  • AS 4291.1 / ISO 898 Property Class 8.8/10.9/12.9
  • Furnace black or zinc plated
  • Metric coarse threads

  • AS2465 / ANSI B18.2.1 ¼ - 1” diameter
  • SAE J 429 Grade 5 from ¼ to 7/16, Grade 8 from ½ to 1” diameter
  • Furnace back or zinc plated
  • UNC and UNF threads. Note: 1” UNF is 12 TPI.