... .8,9.8.. Non Standard Bolts,Non Standard Hardware,USA Bolts And Nuts.1.What’s the specification of ... plated,Tin plated,Black phosphating ,anodized ,Parkerising,and Environmental Plated is used in our products, ... 40GP will be 40T-52T.additioal processes Washer assembly,Heat treatment,Baking hydrogen,Anti-slipping ... years experiences in screw,bolt,nut,washer,rivet, stud, pin,wrench and so on .2. Our ...