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Thread Angle Information:
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The thread angle is the angle between the flanks of a screw thread, measured in an axial plane. It's a fundamental characteristic of screw threads that affects their strength and fit.
Common thread angles:
Explanation: The thread angle is typically standardized based on the thread system being used and doesn't require calculation for standard threads.
Details: The thread angle affects the mechanical properties of the thread, including strength, resistance to stripping, and sealing capability.
Tips: Simply select the thread type to see its standard angle. For custom threads, the angle would need to be measured directly.
Q1: Why are most thread angles 60°?
A: 60° provides a good balance between strength and ease of manufacturing. It's become the international standard for metric and unified threads.
Q2: What's special about Whitworth 55° threads?
A: The 55° Whitworth thread was an earlier standard that offers slightly better sealing and different mechanical properties.
Q3: Can thread angle vary within a thread system?
A: Generally no - thread angle is constant within a system, though some specialized threads may differ.
Q4: How is thread angle measured?
A: Using optical comparators, thread micrometers, or specialized thread angle gauges.
Q5: Does thread angle affect thread fit?
A: Yes, the angle is one factor that determines how tightly mating threads will fit together.