... ,cone washer,square washer,tooth washer With double washer,flat and split washer with three washer4. Material of Combination Screw:Carbon ... from M2-M10mm, Inch size from #4-#107. Surface of Combination Screw:Plain, black finished, Zinc plated (Galv), Nickel, phosphate ... black, 3Cr zinc,Passivation8. Packing of Combination Screw:General packing: 15-20Kg per Carbon or Bag, approx ...