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Benchwork - Project 3 - Thread Size Identification
Benchwork Home

Part # PSR1#1

Part Description: Thread Size Identification

Quantity Req.: 1

Name _______________________ Date: _____________
Step# Location  Description 
10 Projects Cabinet Obtain a set of threaded items identified as 4-C-2.
20 Tool Cabinet  Obtain a one-inch micrometer and a screw pitch gage.
20 Inspection area or classroom Use the micrometer to measure the outside diameter of the fastener and record your answer in the space provided.
30 Inspection area or classroom Use the screw pitch gage to measure the number of threads per inch and record your answer in the space provided.
40 Inspection area or classroom Write the correct thread designation for the major diameter and screw pitch in the space provided (see Example next page).
50 Tool Cabinet Return tools and fasteners to their respective places.
80 Instructor Have the project inspected by your instructor.

 Print this sheet and give it to your instructor.

Part Number Diameter in Decimals
(Step 20 above)
Threads per Inch
(Step 30 above)
Thread size Designation 
(Step 40 above)
Example .373 24 3/8-24 UNF
1       
2       
3      
4      
5      
6      
7      
8      
9      
10      
Grading Summary
-1 = 97%
-2 = 94%
-3 = 91%
-4 = 88% 
-5 = 85%
-6 = Do Over

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