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# 3 (Standard & Practical Invisible)

The smallest in the family of 3k invisible zippers. The width & thickness of #3 zipper is 4.3mm x 1.9mm .
#3 zippers are regularly used as pocket zippers, houses fly zipper, children garments, in line zippers, hood & many other applications.
3k standard Cross wise strength.
#3 Brass 55-60 Kgs.
#3 Aluminum 30-35 Kgs.
#3 Nickle Silver 60-65 Kgs.
#3 Brass Zippers are widely used in children Denims as the entire zipper with a spring lock slider.
#3 Aluminum Zippers are widely used in Infants & toddles suits & clothes.
#3 invisible Open end zippers are used in children garments where lot of strength characteristics are not important. But the weight has to be lighter. Standard complaints of #3 zippers arise in washing & ballooning of garments. The main way to avoid damage to these zippers is to buckle up the button or the flap by a stitch to prevent the load of the garment & on the slider.
The B.S. 3084:2006 recommends that #3 zipper in invisible which has to be used in specification A, B & C to have latent cross wise strength of 15, 20 & 25 Kgs respectively. 3k satisfies this comfortably.
For details of British Standards & #3 Zippers Test charts, click here.
For Wash Care Instructions, click here.