A-A-50015 Socks, Stretch Type (Dress Or Liner)This commercial item description covers the requirements for stretch type, ribbed knit, cotton/nylon, and polyester socks.

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A-A-50015C

3.1.2 Type II. The socks shall be circular knitted, with a ribbed elastic top, a reciprocated heel and standard flat toe seam. The socks shall be knit on a 3-3/4 inch or 4 inch diameter, single or double cylinder, not less than 132 needles for appearance.

3.2 Material.

3.2.1 Type I. The socks shall be made of cotton yarn plied with stretch nylon yarn, or cotton yarn plated with stretch nylon yarn. The plating will result in the cotton yarn dominating the inside of the sock.

3.2.2 Type II. The socks shall be made from 18/1 cc tetra-channel polyester fiber combined with one end of 100-34 textured nylon or a fiber with comparable properties. The cuff shall be knitted with 120-180 denier spandex or 95-100 gage rubber, double wrapped with 1/40 denier multifilament flat nylon. The total fiber percentages shall be a minimum of 78% polyester for coolness, a maximum of 2% spandex or rubber for fitness and if needed, the remaining fiber type shall be nylon.

3.3 Elastic top. The elastic top for the Type I sock shall be a true 1 by 1 ribbed knit made with an. elastic yarn, or cotton yarn consisting of a spandex core with a stretch type inner and outer cover, and finished with a turn-over, non-raveling welt, and free from loose ends. The elastic top for the Type 11 socks is a 2 inch 1 X 1 mock or true rib knit by 3-1/2 inches wide.

3.4 Color. The color of the Type I and II socks shall be black as specified.

3.5 Sizes and measurements. The finished socks shall conform to the sizes below as identify by National Association Of Hosiery Manufactures (NAHM).

3.5.1 Stretch and Weight. The finished socks shall conform to the stretch and weight requirements listed in Tables I and II. Extra-extra-small, Extra-small, Small, Medium and Large may be abbreviated to XXSM, XSM, SM, MED, LG.