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Hex bolts
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Hex bolts
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Zinc plated grade 8 steel yellow
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Fine thread
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1/2"-20
Hex bolts, Zinc plated grade 8 steel yellow, 1/2"-20 x 2-1/2"
Prod. #
Length
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Price
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775
2-1/2"
$2.40
/ ea
$39.38
/ 25
$351.00
/ 250
$2.40
/ ea
$39.38
/ 25
$351.00
/ 250
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Product details
Bolt Depot product#
775
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 8
Grade 8 is stronger than grade 5, and is commonly found in high strength automotive applications.
Color
Yellow
Thread density
Fine
Diameter
1/2"
Thread count
20
Length
2-1/2"
Thread direction
Right hand
Length tolerance
+0.04" / -0.06"
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
0.302"
-
0.323"
Width across the flats
3/4"
Fully threaded
No
Thread length
Minimum
1-1/4"
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
2600
Hex nuts, Zinc plated grade 8 steel yellow, 1/2"-20
A standard six sided nut.
Add
$0.25
/ ea
$9.88
/
50
$84.50
/
500
3051
SAE flat washers, Zinc plated grade 8 steel yellow, 1/2"
SAE pattern is a tighter fit on the bolt and a smaller outside diameter.
Add
$0.34
/ ea
$9.79
/
50
$87.10
/
500
7184
Hex nylon insert lock nuts, Zinc plated grade 8 steel yellow, 1/2"-20
A hex nut with a nylon ring to resist loosening.
Add
$0.49
/ ea
$17.63
/
50
$151.00
/
500
3064
USS flat washers, Zinc plated grade 8 steel yellow, 1/2"
USS pattern is the most common type of flat washer.
Add
$0.29
/ ea
$11.89
/
50
$100.00
/
500
3041
Lock washers, Zinc plated grade 8 steel yellow, 1/2"
Split lock washers place tension against a nut after tightening, to help prevent loosening.
Add
$0.15
/ ea
$5.09
/
50
$45.40
/
500
Add All Entered
See also
Metric hex bolts
A bolt with a six sided head.