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Hex bolts
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Hex bolts
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Zinc plated grade 5 steel
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Fine thread
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5/8"-18
Hex bolts, Zinc plated grade 5 steel, 5/8"-18 x 4-1/2"
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559
4-1/2"
$5.92
/ ea
$103.96
/ 25
$906.00
/ 250
$5.92
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$103.96
/ 25
$906.00
/ 250
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Product details
Bolt Depot product#
559
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 tempered medium carbon steel.
Plating
Zinc
Zinc plated for moderate corrosion resistance.
Grade
Grade 5
Grade 5 falls between grade 2 and grade 8 in strength, and is commonly found in automotive applications.
Thread density
Fine
Diameter
5/8"
Thread count
18
Length
4-1/2"
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
0.378"
-
0.403"
Width across the flats
15/16"
Fully threaded
No
Thread length
Minimum
1-1/2"
Dimensional standard
ASME B18.2.1
Material standard
SAE J429
Additional information
US Hex bolt sizes
US bolt thread length table
Head/Wrench size table
US hex bolt recommended torque
Matching Products
Click on a product # for additional info
Prod. #
Description
Buy
2580
Hex nuts, Zinc plated grade 5 steel, 5/8"-18
A standard six sided nut.
Add
$0.77
/ ea
$12.97
/
25
$104.00
/
250
15035
SAE flat washers, Zinc plated grade 5 steel, 5/8"
SAE pattern is a tighter fit on the bolt and a smaller outside diameter.
Add
$0.61
/ ea
$10.13
/
25
$87.20
/
250
15027
USS flat washers, Zinc plated grade 5 steel, 5/8"
USS pattern is the most common type of flat washer.
Add
$1.01
/ ea
$16.84
/
25
$148.00
/
250
Add All Entered
See also
Metric hex bolts
A bolt with a six sided head.