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5/16"-18 Grade 8 Hex Bolt - Yellow Zinc - Coarse Thread

Grade 8 Hex Bolt Yellow Zinc Plated: (##) Number of Pieces in 1 Pound

Grade 8 hex bolts are made from medium carbon alloy steel and heat treated.  A Grade 8 hex bolt has a greater tensile strength than a Grade 5 and Grade 2 hex bolt.  They are designed for use in high stress applications.  The length of a hex bolt is determined by measuring from under the head of the bolt to the base of the threads. 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 8 Diameter: 5/16
Plating: Yellow Zinc Thread Count: 18
Material: Steel Thread Length: 7/8
Head Style: Hex Socket Size: 1/2
Proof Load, Lb.: 6,300 Tensile Strength, Lb.: 7,850


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/1 lb. Qty
3/4'' (41) $ 4.00
1'' (35) $ 4.00
1 1/4'' (30) $ 4.00
1 1/2'' (26) $ 4.00
1 3/4'' (22) $ 4.00
2'' (20) $ 4.00
2 1/2'' (16) $ 4.00
3'' (14) $ 4.00
3 1/2'' (12) $ 4.00
4'' (11) $ 4.00
4 1/2'' (10) $ 4.00
5'' (9) $ 4.00
6'' (7) $ 4.00
Length/Size Price/Pkg Qty Qty
3/4'' $ 38.50 10 lbs.
1'' $ 38.50 10 lbs.
1 1/4'' $ 38.50 10 lbs.
1 1/2'' $ 38.50 10 lbs.
1 3/4'' $ 38.50 10 lbs.
2'' $ 38.50 10 lbs.
2 1/2'' $ 38.50 10 lbs.
3'' $ 38.50 10 lbs.
3 1/2'' $ 38.50 10 lbs.
4'' $ 38.50 10 lbs.
4 1/2'' $ 38.50 10 lbs.
5'' $ 38.50 10 lbs.
6'' $ 38.50 10 lbs.
Length/Size Price/Case Qty Qty
3/4'' $ 87.50 25 lbs.
1'' $ 87.50 25 lbs.
1 1/4'' $ 87.50 25 lbs.
1 1/2'' $ 87.50 25 lbs.
1 3/4'' $ 87.50 25 lbs.
2'' $ 87.50 25 lbs.
2 1/2'' $ 87.50 25 lbs.
3'' $ 87.50 25 lbs.
3 1/2'' $ 87.50 25 lbs.
4'' $ 87.50 25 lbs.
4 1/2'' $ 87.50 25 lbs.
5'' $ 87.50 25 lbs.
6'' $ 87.50 25 lbs.