Standard Test Methods for Sewing Threads

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

1.1.1 The test methods in this standard are intended to evaluate only sewing thread taken from thread holders.

1.2 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.

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

Sections Colorfastness to Drycleaning 50 to 60 Colorfastness to Laundering 39 to 49 Colorfastness to Water Migration 63 to 72 Diameter 25 to 30 Length per Thread Holder 19 to 24 Shrinkage, Single End 31 to 38 Dry Heat 36.1 Boiling Water 36.2 Strength and Elongation 12 Single Strand---Conditioned 12.1.1 Single Strand---Wet 12.1.2 Knot Strength 12.2 Loop Strength 12.3 Twist 13 Twist Balance 17 Yarn Number 7 to 10

1.4 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.

1.5 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.