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  9. Square Head Bolt, Steel, Grade 2, Zinc Plated, 5/16"-18 Thread Size, 1-3/8" Lg, 10 PK
Midwest Fastener

Square Head Bolt, Steel, Grade 2, Zinc Plated, 5/16"-18 Thread Size, 1-3/8" Lg, 10 PK

product price: $4.79
/pk 10, $0.48/ea
Sold in multiples of 2 for $9.58
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Key Features

Grade 2 Material Grade/Class
  • System of Measurement Inch
  • Thread Size 5/16"-18
  • Material Steel
  • Finish Zinc Plated
  • Thread Type Coarse
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Product Information

Dimensions

Thread Size 5/16"-18
Fastener Length 1-3/8"
Diameter 5/16"

Details

System of Measurement Inch
Material Grade/Class Grade 2
Material Steel
Finish Zinc Plated
Thread Type Coarse
Item Square Head Bolt
Head Type External Square
Head Style Square (1/2" Wrench)

Description

A square head bolt has a four-sided head. Compared to standard hex bolts, square bolts have a greater surface in contact with the part being fastened, and therefore provide greater resistance to loosening (though also greater resistance to tightening). Square bolts are typically mated with square-headed nuts.

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