Interesting discovery about a Metric M6 bolt

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Discussion Overview

The discussion revolves around the compatibility of an M6 x 1.0 thread bolt with a hole tapped to 1/4"-28. Participants explore the implications of this finding, including potential applications and drawbacks.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant discovered that an M6 x 1.0 thread bolt can screw into a 1/4"-28 tapped hole, initially suspecting a labeling error.
  • Another participant confirms this compatibility but warns that it results in significant clearance, which may cause the bolt to loosen quickly, suggesting it is not a reliable substitute.
  • A humorous remark is made about the situation, indicating a light-hearted tone in part of the discussion.
  • A question is raised regarding the existence of other types of M6 bolts beyond the standard metric version.

Areas of Agreement / Disagreement

Participants express differing views on the practicality of using an M6 bolt in place of a 1/4"-28 bolt, with some acknowledging the compatibility while others caution against its use due to potential issues. The discussion remains unresolved regarding the best practices for such substitutions.

Contextual Notes

Participants do not clarify the specific applications or conditions under which the compatibility might be acceptable or problematic, leaving some assumptions unaddressed.

CROSE85
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Today while working I found that an M6 x 1.0 Thread bold will easily screw into a hole tapped 1/4"-28.

At first when I found this, I thought one of my boxes of bolts was labeled wrong, but I tried another set and it work.

Has anyone else come across this similarity before?

-CR
 
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Yes I've noticed the same thing before, but it leaves a ton of clearance so the bolt tends to loosen up very quickly. It's not a very good idea to use the M6 in place of the 1/4-28 because of this, but it can work as a quick fix until you find the right bolt.
 
Anyone who does this has a screw loose.

(I couldn't resist.)
 
Is there any other type of M6 bolt besides a metric one?
 

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