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Acme General Purpose Screw Threads Stress and Shear Area

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Engineering Strength of Materials

Acme General Purpose Screw External Threads Stress and Shear Area equations and calculators per. ASME/ANSI B1.5

Stress Area of General Purpose Acme Threads: For computing the tensile strength of the thread section, the minimum stress area based on the mean of the minimum pitch diameter d₂ min. and the minimum minor diameter d₁ max. of the external thread is used.

For computing the tensile strength of the thread section, the minimum stress area based on the mean of the minimum pitch diameter d₂ and the minimum minor diameter d₁ of the external thread is used:

Stress Area of General Purpose Acme Threads:

where d₂ min. and d₁ max. can be obtained from -> ACME General Purpose Thread Designer Calculator

Where:

d₁ = Minimum minor diameter of the External thread (in, mm)

d₂ = Minimum pitch diameter min. External thread (in, mm)

d₁ and d₂ can be obtained from -> ACME General Purpose Thread Designer Calculator

Shear Area of General Purpose Acme Threads: For computing the shear area per inch length of engagement of the external thread, the maximum minor diameter of the internal thread D₁, and the minimum pitch diameter of the external thread D₂ ,

Where:

D₁ = Maximum Minor diameter of the internal thread (in, mm)
D₂ = Minimum Pitch diameter of the external thread (in, mm)
D₁ and D₂ can be obtained from -> ACME General Purpose Thread Designer Calculator
​n = Number of thread per unit (threads/inch, threads/mm)

Related:

• ACME Stub Threads Chart
• External ACME Thread General Purpose Size Table Chart
• Internal ACME Thread General Purpose Size Chart
• ACME General Purpose Thread Design Calculator
• Acme General Purpose Screw Threads Stress and Shear Area
• ACME Stub Threads Size Designation Table Chart