... ,6.8,8.8,9.8... Double End Bolt,Special Head Bolt,Bolt Maker ,M6 Bolt Dimensions1.What’s the specification of our Products ... management.3. We have special research person and more than 100 equipment to produce fastener.Perfect quality 1.In Carbon Steel ... report and other testing report .Good service We can manufacture nonstandard parts according to your drawings,samples,detailed descriptions(we can ...