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Grade 8 Alloy Steel Hex Nuts

Grade 8 Alloy Steel Hex Nuts

Grade 8 Alloy Steel Hex Nuts

Grade 8 Alloy Steel Hex Nuts

Thread Types: Coarse (USS), Fine (SAE)

  • High-strength alloy steel hex nuts
  • Available in coarse and fine threads
  • Conforms to SAE J995 Grade 8 standards
  • Zinc plated for corrosion resistance
  • Available in various sizes from 1/4″ to 1-1/2″

Coarse Thread (USS)

Size Part # (Qty 100) Part # (Qty 50) Width Across Flats Thickness
1/4-20 34-3804 34-3804Z 7/16 7/32
5/16-18 34-3805 34-3805Z 1/2 17/64
3/8-16 34-3806 34-3806Z 9/16 21/64
7/16-14 34-3807 34-3807Z 11/16 3/8
1/2-13 34-3808 34-3808Z 3/4 7/16
9/16-12 34-3809 34-3809Z 7/8 31/64
5/8-11 34-3810 34-3810Z 15/16 35/64
3/4-10 34-3812 34-3812Z 1-1/16 11/64
7/8-9 34-3814 34-3814Z 1-5/16 3/4
1-8 34-3816 34-3816Z 1-1/2 55/64
1-1/8-7 34-3818** 34-3818Z** 1-11/16 31/32
1-1/4-7 34-3820** 34-3820Z** 1-7/8 1-1/16
1-1/2-6 34-3824** 34-3824Z** 2-1/4 1-9/32

Fine Thread (SAE)

Size Part # Width Across Flats Thickness
1/4-28 34-3904 7/16 7/32
5/16-24 34-3905 1/2 17/64
3/8-24 34-3906 9/16 21/64
7/16-20 34-3907 11/16 3/8
1/2-20 34-3908 3/4 7/16
9/16-18 34-3909 7/8 31/64
5/8-18 34-3910 15/16 35/64
3/4-16 34-3912 1-1/16 11/64
7/8-14 34-3914 1-5/16 3/4
1-14 34-3916 1-1/2 55/64
1-1/8-12 34-3918 1-11/16 31/32
1-1/4-12 34-3920** 1-7/8 1-1/16
1-1/2-12 34-3924** 2-1/4 1-9/32

Grade 8 Nut Identification:
Old Style: Dot and dash located 60° apart
New Style: Two circumferential lines located 60° apart

Shipping & Stocking Made Simple

At GNS Industrial Supply, we don’t just deliver products—we deliver peace of mind. Unlike traditional suppliers who ship and leave the rest to you, we take a hands-on approach to your inventory management. Our team visits your location, audits your existing stock, identifies what you need, and handles the reordering process for you. We then deliver directly to your facility and restock your supply room according to your preferred system—ensuring your operation runs smoothly without overstock or downtime. It’s a smarter, more personalized way to manage industrial supplies—built for teams who don’t have time to run out of what matters.