Grade 8 UNF AS2465 Zinc Plated Hex Bolt
HOBSON UNF HEX BOLT – RECOMMENDED TIGHTENING TORQUE
The tightening torque values given in the above table serve only as a guide. A k factor of 0.2 has been used which assumes threads are plain finish, burr free with a light oil coating. It should be noted that these figures are based on the first tightening of single assemblies in isolation