Grade 2 Hex Head Cap Screws - (USS) Coarse Thread
Plain steel Grade 2 hex head cap screws in USS coarse thread, in long lengths: 1/2-13, 5/8-11 and 3/4-10 from 7" to 12". Grade 2 is low carbon steel for light and medium duty jobs where high strength is not needed. Choose a size below.
Specifications
- Grade: SAE J429 Grade 2, low carbon steel, no head markings
- Strength: 74,000 psi min. tensile (1/4" to 3/4")
- Thread: USS coarse (UNC), partial thread
- Sizes: 1/2-13, 5/8-11, 3/4-10
- Lengths: 7" to 12"
- Finish: plain steel
Common Uses
- Wood construction and timber
- Through bolting thick assemblies
- Light duty equipment
FAQ
What is the difference between Grade 2, Grade 5 and Grade 8?
Grade 2 is low carbon steel with no head markings (74,000 psi minimum tensile in 1/4" to 3/4"). Grade 5 is medium carbon steel, heat treated, with 3 radial lines on the head (120,000 psi). Grade 8 is medium carbon alloy steel, heat treated, with 6 radial lines on the head (150,000 psi). Pair each grade with a nut of the same grade or higher.
What finish do these bolts have?
Zinc plating (clear or yellow) resists rust indoors and in dry areas. Plain (black) steel has only a light oil and should be painted or kept dry. For outdoor or wet use, choose hot dip galvanized or stainless steel bolts.
Related: Grade 5 Coarse Thread | Grade 2 Hex Nuts | USS Flat Washers | Galvanized Hex Bolts
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