5/16"-18 Grade 5 Hex Tap Bolt
Grade 5 Hex Tap Bolt: The hex head bolt has the six sided hexagonal shaped head. This is a machine threaded bolt typically used with a nut or in a pre-threaded hole. The Grade 5 bolt can be distinguished by the 3 dashes (l) on top of the head of the bolt, please see photo below. Grade 5 hex bolts shall be heat treated, at the option of the manufacturer and tempered to a minimum tempering temperature of 800 degrees Fahrenheit. A Grade 5 hex bolt has greater tensile strength than a Grade 2 hex bolt, and its yield to tensile ratio is the lowest of all heat treated steels. The length of a hex bolt is determined by measuring from under the head of the bolt to the base of the threads. A "tap" bolt is fully threaded. Please note you are buying by the pound so confirm your pieces when considering how much to purchase. (##) Number of pieces in 1 pound
| Grade: | Grade 5 | Diameter: | 5/16 |
| Plating: | Zinc | Thread Count: | 18 |
| Material: | Steel | Thread Length: | Fully Threaded |
| Head Style: | Hex | Socket Size: | 1/2 |
| Proof Load, Lb.: | 3,900 | Tensile Strength, Lb.: | 4,450 |
SAE J429 Proof Load and Tensile Strength Requirements Above
Length is Measured from Under the Head to the Bottom of the Bolt
