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5/16"-18 Grade 5 Hex Bolt

Grade 5 Hex 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.

Grade: Grade 5 Diameter: 5/16
Plating: Zinc Thread Count: 18
Material: Steel Thread Length: 7/8
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

Country of Origin varies; Country of Origin is subject to change
If plating is important please send an inquiry


Length/Size Price/Each Qty
3/4'' $ 0.11
1'' $ 0.12
1 1/4'' $ 0.14
1 1/2'' $ 0.16
1 3/4'' $ 0.19
2'' $ 0.21
2 1/2'' $ 0.25
3'' $ 0.29
3 1/2'' $ 0.33
4'' $ 0.37
4 1/2'' $ 0.42
5'' $ 0.46
6'' $ 0.55
Length/Size Price/Pkg Qty Qty
3/4'' $ 8.50 100
1'' $ 9.27 100
1 1/4'' $ 10.82 100
1 1/2'' $ 12.36 100
1 3/4'' $ 13.91 100
2'' $ 15.45 100
2 1/2'' $ 18.54 100
3'' $ 21.63 100
3 1/2'' $ 24.72 100
4'' $ 18.75 50
4 1/2'' $ 20.91 50
5'' $ 23.12 50
6'' $ 27.55 50
Length/Size Price/Case Qty Qty
3/4'' $ 137.66 1650
1'' $ 134.11 1400
1 1/4'' $ 119.69 1100
1 1/2'' $ 125.76 1000
1 3/4'' $ 120.56 850
2'' $ 126.59 800
2 1/2'' $ 114.43 600
3'' $ 111.55 500
3 1/2'' $ 115.00 450
4'' $ 115.21 400
4 1/2'' $ 96.41 300
5'' $ 88.84 250
6'' $ 105.83 250