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Major Diameter of External Thread is the diameter of the imaginary co-axial cylinder that just touches the crest of an external thread. Check FAQs
d=dp+(0.75H)
d - Major Diameter of External Thread?dp - Pitch Diameter of External Thread?H - Height of Fundamental Triangle?

Major Diameter of External Thread given Height of Fundamental Triangle Example

With values
With units
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Here is how the Major Diameter of External Thread given Height of Fundamental Triangle equation looks like with Values.

Here is how the Major Diameter of External Thread given Height of Fundamental Triangle equation looks like with Units.

Here is how the Major Diameter of External Thread given Height of Fundamental Triangle equation looks like.

29.795Edit=27.2Edit+(0.753.46Edit)
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Major Diameter of External Thread given Height of Fundamental Triangle Solution

Follow our step by step solution on how to calculate Major Diameter of External Thread given Height of Fundamental Triangle?

FIRST Step Consider the formula
d=dp+(0.75H)
Next Step Substitute values of Variables
d=27.2mm+(0.753.46mm)
Next Step Convert Units
d=0.0272m+(0.750.0035m)
Next Step Prepare to Evaluate
d=0.0272+(0.750.0035)
Next Step Evaluate
d=0.029795m
LAST Step Convert to Output's Unit
d=29.795mm

Major Diameter of External Thread given Height of Fundamental Triangle Formula Elements

Variables
Major Diameter of External Thread
Major Diameter of External Thread is the diameter of the imaginary co-axial cylinder that just touches the crest of an external thread.
Symbol: d
Measurement: LengthUnit: mm
Note: Value should be greater than 0.
Pitch Diameter of External Thread
Pitch Diameter of External Thread is the simple effective diameter of external screw thread, approximately halfway between the major and minor diameters.
Symbol: dp
Measurement: LengthUnit: mm
Note: Value should be greater than 0.
Height of Fundamental Triangle
Height of Fundamental Triangle is the height of the thread when the profile is extended to a sharp vee form.
Symbol: H
Measurement: LengthUnit: mm
Note: Value should be greater than 0.

Other Formulas to find Major Diameter of External Thread

​Go Major Diameter of External Thread given Pitch and Pitch Diameter of External Thread
d=dp+(0.650p)
​Go Major Diameter of External Thread given Minor Diameter of External Thread
d=dc+(1712H)

Other formulas in Fastner Geometry category

​Go Pitch Diameter of Internal Thread given Pitch
Dp=D-(0.650p)
​Go Pitch of Threads given Pitch Diameter of Internal Thread
p=D-Dp0.650
​Go Minor Diameter of Internal Thread given Pitch and Pitch Diameter of Internal Thread
D=Dp+(0.650p)
​Go Pitch Diameter of Internal Thread given Height of Fundamental Triangle
Dp=D-(0.75H)

How to Evaluate Major Diameter of External Thread given Height of Fundamental Triangle?

Major Diameter of External Thread given Height of Fundamental Triangle evaluator uses Major Diameter of External Thread = Pitch Diameter of External Thread+(0.75*Height of Fundamental Triangle) to evaluate the Major Diameter of External Thread, Major Diameter of External Thread given Height of Fundamental Triangle, is used to determine the largest diameter of the external thread. This is crucial for ensuring proper fit and function in threaded assemblies, such as bolts and screws, where the major diameter must match the corresponding internal thread's minor diameter for optimal engagement and load distribution. Major Diameter of External Thread is denoted by d symbol.

How to evaluate Major Diameter of External Thread given Height of Fundamental Triangle using this online evaluator? To use this online evaluator for Major Diameter of External Thread given Height of Fundamental Triangle, enter Pitch Diameter of External Thread (dp) & Height of Fundamental Triangle (H) and hit the calculate button.

FAQs on Major Diameter of External Thread given Height of Fundamental Triangle

What is the formula to find Major Diameter of External Thread given Height of Fundamental Triangle?
The formula of Major Diameter of External Thread given Height of Fundamental Triangle is expressed as Major Diameter of External Thread = Pitch Diameter of External Thread+(0.75*Height of Fundamental Triangle). Here is an example- 29795 = 0.0272+(0.75*0.00346).
How to calculate Major Diameter of External Thread given Height of Fundamental Triangle?
With Pitch Diameter of External Thread (dp) & Height of Fundamental Triangle (H) we can find Major Diameter of External Thread given Height of Fundamental Triangle using the formula - Major Diameter of External Thread = Pitch Diameter of External Thread+(0.75*Height of Fundamental Triangle).
What are the other ways to Calculate Major Diameter of External Thread?
Here are the different ways to Calculate Major Diameter of External Thread-
  • Major Diameter of External Thread=Pitch Diameter of External Thread+(0.650*Pitch of Threads)OpenImg
  • Major Diameter of External Thread=Minor Diameter of External Thread+(17/12*Height of Fundamental Triangle)OpenImg
Can the Major Diameter of External Thread given Height of Fundamental Triangle be negative?
No, the Major Diameter of External Thread given Height of Fundamental Triangle, measured in Length cannot be negative.
Which unit is used to measure Major Diameter of External Thread given Height of Fundamental Triangle?
Major Diameter of External Thread given Height of Fundamental Triangle is usually measured using the Millimeter[mm] for Length. Meter[mm], Kilometer[mm], Decimeter[mm] are the few other units in which Major Diameter of External Thread given Height of Fundamental Triangle can be measured.
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