Hex bolts, Zinc plated grade 8 steel yellow, 9/16"-18 x 5-1/2"

Grade 8 hex bolt

Prod. # Length Each price Bag price Bulk price Price Buy
4279 5-1/2" $8.18 / ea $71.49 / 10 $631.00 / 100 $8.18 / ea $71.49 / 10 $631.00 / 100
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Product Images

Hex cap screw Varies (Body) dimensions
Grade 8 (Head) dimensions
Product details
Bolt Depot product# 4279
Units US
Category Hex bolts
Bolts with hexagonal heads and machine threads for use with a nut or in a tapped hole. Also known as hex cap screws or machine bolts.
Subcategory Hex bolts
A bolt with a six sided head.
Material Steel
A low carbon steel for general use, either Grade 2 or A307A.
Plating Zinc
Zinc plated for moderate corrosion resistance.
Grade Grade 8
Grade 8 is stronger than grade 5, and is commonly found in high strength automotive applications.
Color Yellow
Thread density Fine
Diameter 9/16"
Thread count 18
Length 5-1/2"
Thread direction Right hand
Length tolerance +0.10" / -0.10"
Head style Hex
Hex heads are six sided for use with a wrench.
Drive type External hex
A hexagonal head for use with a wrench.
Head height 0.348" - 0.371"
Width across the flats 13/16"
Fully threaded No
Thread length Minimum 1-3/8"
Dimensional standard ASME B18.2.1
Material standard SAE J429

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Hex nylon insert lock nuts, Zinc plated grade 8 steel yellow, 9/16"-18
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USS flat washers, Zinc plated grade 8 steel yellow, 9/16"
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Lock washers, Zinc plated grade 8 steel yellow, 9/16"
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See also

Metric hex bolt

Metric hex bolts

A bolt with a six sided head.