Bolts with no drive and machine threads for use with a nut.
Head style
Carriage
Carriage heads are large smooth and domed with no drive.
Neck style
Square
Material
Silicon bronze
Solid bronze. An alloy of copper with greater strength and corrosion resistance than brass. Exact color varies.
Thread density
Coarse
Diameter
5/16"
Thread count
18
Length
2"
Dimensional standard
ASME B18.5
Length tolerance
+0.02" / -0.04"
Thread direction
Right hand
Head diameter
0.688" - 0.719"
Head height
0.156" - 0.176"
Square width
0.307" - 0.324"
Square depth
0.156" - 0.187"
Thread length
Minimum 7/8"
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