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ASTM E 676 Document Information:
Title
Standard Specification for Interchangeable Taper-Ground Joints
ASTM International
Publication Date:
Oct 10, 2002
Scope:
This specification covers designations, dimensions, and
tolerances for only the ground surfaces of interchangeable
taper-ground joints for laboratory and industrial equipment in
full-length, medium-length, short-length, and international-length
(ISO K-6 series) grindings.
NOTE 1—The dimensions pertaining to full-length, medium-length,
and short-length joints, other than for the tolerance on length of
grind, were taken directly from the now obsolete Commercial
Standard CS 21.
NOTE 2—Tolerances on the diameters of the international-length
joints do not agree with those given in ISO Recommendation R383.
These tolerances have been established to agree with those of CS 21
in order to prevent the negative projection (large end of inner
joint being smaller than large end of outer joint) permitted by
ISO.
NOTE 3—Although glass is the most commonly used material for
ground joints, other materials may be used as specified.
Taper-ground joints constructed from glass should be of suitable
chemical and thermal properties in accordance with Specification E
438. Joints should be as free as possible of visible defects and
conform to Specification E 671.
The following precautionary caveat pertains only to the Test
Method portion, Section 4, of this specification. This standard
does not purport to address all of the safety concerns, if any,
associated with its use. It is the responsibility of the user of
this standard to establish appropriate safety and health practices
and determine the applicability of regulatory limitations prior to
use.
Keywords:
- ground
- joints
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