scope:

These test methods can be used to evaluate sewing threads of any fiber.

The test methods in this standard are intended to evaluate only sewing

thread taken from thread holders.

These test methods only provide for the measurement of sewing thread

physical properties. These test methods do not address any other properties that may be important for the satisfactory performance of

sewing threads under particular end use conditions.

These test methods can be used to measure the following properties:

Sections

Colorfastness to Drycleaning 73 to 83

Colorfastness to Laundering 62 to 72 Colorfastness to Water Migration 84 to 94 Diameter 43 to 50 Length per Thread Holder 34 to 42 Shrinkage, Single Strand 51 to 61 Dry Heat 58.1 Boiling Water 58.2 Strength and Elongation 15 to 21 Single Strand - Conditioned 19.1.1 Single Strand - Wet 19.1.2 Loop Strength 19.2 Knot Strength 19.3 Twist 22 to 27 Twist Balance 28 to 33

Yarn Number 7 to 14

NOTE 1 - For methods covering tests on prepared seams, refer to Test

Methods D1683 and D3940. (Footnote 3)

The values stated in SI units are to be regarded as standard; the

values in English units are provided as information only and are not exact equivalents.

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.

Footnote 3 - Annual Book of ASTM Standards, Vol 07.02.