Jiangsu Zhenya Special Screw Co.,Ltd is one of the leading China heavy cap screw or hex bolts manufacturers and suppliers, as a professional company, our productive factory is able to produce CE certification heavy cap screw or hex bolts at both high quality and low price. Welcome to buy discount and cheap, or wholesale products from us.

these bolts have shorter thread lengths than standard heavy hex bolts.hex head that is larger than a standard hex head. These specifications include: A193, A320 and A307B also A325 and A490 

Heavy hex bolts can be used for many different applications that include construction materials for projects such as docks, bridges, highway structures, and buildings, fastening wood, steel,  IT'S with forged heads are also commonly used as headed anchor bolts.