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Standard Grade 8 Fasteners

Grade 8 steel is hardened to handle 150,000 psi tensile strength. This makes it ideal for many automotive, farm, and industrial uses.
Click on the links below to select just the sizes of cap screws, washers, nuts, or bolts you are looking for. If you need help searching or for special orders email us at sales@monsterfastener.com.

    Grade 8 Coarse Hex Cap Bolts Grade 8 Fine Hex Cap Bolts Grade 8 Flange Bolts Grade 8 Plow Bolts Grade 8 Hex nuts Grade 8 Lock nuts Grade 8 Flat Washers Grade 8 Lock Washers
    Hex Cap
(Coarse Thread - USS)
Hex Cap
(Fine Thread - SAE)
Flange Bolts Plow Bolts Hex nuts
(Coarse & Fine)
Stop/Lock nuts
(Coarse & Fine)
Flat Washers Lock Washers
1/4 inch 1/4" (#14) 1/4-20 1/4-28 1/4   1/4 1/4 1/4 1/4
5/16 inch" 5/16" 5/16-18 5/16-24 5/16   5/16 5/16 5/16 5/16
3/8 inch" 3/8" 3/8-16 3/8-24 3/8   3/8 3/8 3/8 3/8
7/16 inch" 7/16" 7/16-14 7/16-20 7/16 7/16 7/16 7/16 7/16 7/16
1/2 inch" 1/2" 1/2-13 1/2-20 1/2 1/2 1/2 1/2 1/2 1/2
9/16 inch" 9/16" 9/16-12 9/16-18   9/16 9/16 9/16 9/16
5/8 inch" 5/8" 5/8-11 5/8-18 5/8 5/8 5/8 5/8 5/8 5/8
3/4 inch" 3/4" 3/4-10 3/4-16 3/4 3/4 3/4 3/4 3/4 3/4
7/8 inch" 7/8" 7/8-9 7/8-14   7/8 7/8 7/8 7/8
1 inch 1" 1-8 1-14   1" 1" 1" 1"
   
Hex Cap
(Coarse Thread)
Hex Cap
(Fine Thread)
Flange Bolts
 
Plow Bolts
 
Hex nuts
(Coarse & Fine)
Stop/Lock nuts
(Coarse & Fine)
Flat Washers
 
Lock Washers
 

Ground shipping is FREE for orders of $60 or more.

Normal orders placed before noon will ship the same day. We use UPS, FedEx, and USPS and ship from multiple warehouses around the US. Standard Ground shipping times are 1 to 3 days to most addresses. Next day shipping is available and can be selected in the checkout process.