This Standard contains general metric standards for
a 60 deg symmetrical screw thread with a basic ISO 68-1
profile designated M profile. The M profile threads of
tolerance class 6H/6g are intended for metric applications
where inch class 2A/2B have been used. At the
minimum material limits, the 6H/6g results in a looser
fit than the 2A/2B. Tabular data is also provided for a
tighter tolerance fit external thread of class 4g6g, which
is approximately equivalent to the inch class 3A but with
an allowance applied. Formulation and tolerancing data
is included for applications requiring other fits.
Document identifier
ASME B1.13M-2005 (R2015)
Title
2005 Metric Screw Threads-M Profile
ASME Category
B1 Series, BPVC Related Standards, Screw Threads, ASME BPVC Reference Standards
Publication date
2005-01-01
International Relationship
History of version
ASME B1.13M-2005 (R2015) * ASME B1.13M-2001
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