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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
NAMING Metric Nominal Diameter – Pitch x Length Example: 7 - 1.0 x 50 In millimeters SAE (Society of Auto Engineers) Nominal Diameter – Threads per inch x Length Example: ½ - 13 x 2 In inches
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Major Diameter: The largest diameter of the thread Minor Diameter: The smallest diameter of the thread Pitch: Distance between two threads (mm) or no.
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