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0.3125 — UNC

Name: Bolt Thread Dimensions — UNC: nominal diameter 0.3125 · tensile stress area in2 0.0524 in2 · minor diameter in 0.2524 in · gross area in2 0.0767 in2 · root area in2 0.0419 in2
Creator: Engineering Database

Thread Series: UNC
Nominal Diameter: 0.3125
Gross Area IN2 (in2): 0.0767
Minor Diameter in (in): 0.2524
Nominal Size: 5/16
Pitch MM (mm): 1.4111
Root Area IN2 (in2): 0.0419
Tensile Stress Area IN2 (in2): 0.0524
Tensile Stress Area MM2 (mm2): 33.81
Threads per Inch (threads/in): 18

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