BOLTS
BOLT GRADES Grade determined by number of markings + 2 Low Carbon SteelMedium Carbon Steel (hardened and tempered) Medium or High Carbon Alloy Steel (tempered and hardened)
APPLIED FORCES Shear: Perpendicular to the axis Tension: Parallel to the axis
COMPONENTS Wrench Size Nominal Diameter Root Diameter Grip Length Thread Length Length
ASPECTS Head ShankRunoutThread
THREAD GEOMETRY
THREAD PARTS
NAMING Metric Nominal Diameter – Pitch x Length Example: x 50 In millimeters SAE (Society of Auto Engineers) Nominal Diameter – Threads per inch x Length Example: ½ - 13 x 2 In inches