Question
Download Solution PDFAngle of acme thread is ____.
This question was previously asked in
ISRO SAC Technician B Fitter 6 Nov 2016 Official Paper
Answer (Detailed Solution Below)
Option 3 : 29°
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ISRO Technician B: Fitter Full Test 1
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Detailed Solution
Download Solution PDFExplanation:
Acme thread:
- This thread is a modification of the square thread.
- It has an included angle of 29°.
- It is preferred for many jobs because it is fairly easy to machine.
- Acme threads are used in lathe lead screws.
- This form of thread enables the easy engagement of the half nut.
- The metric acme thread has an included angle of 30°.
Different types of threads and included angle:
|
Thread type |
Included angle |
|
BSW thread |
55° |
|
BA thread |
47 ½° |
|
Unified thread |
60° |
|
American national thread (Seller’s thread) |
60° |
|
ACME thread |
29° |
Latest ISRO Technician B Fitter Updates
Last updated on May 28, 2025
-> ISRO Technician Fitter recruitment notification 2025 has been released
->Candidates can fill ISRO Fitter application form from June 2 to 16.
->A total of 20 vacancies are announced for ISRO recruitment 2025 for Fitter.
->Candidates must have passed SSLC/ SSC/ Matriculation and should have NTC/ITI/NAC in ->Fitter Trade Certificate from an NCVT recognized by the government to satisfy the ISRO Technician B Fitter Eligibility Criteria.
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