Do hex bolts specifically refer to non-high-strength bolts?
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This post was last edited by zhangjuhua on 2015-6-3 23:13. By looking at the replies to the following post, I have a few questions: http://bbs.hcbbs.com/thread-1403165-2-1.html 1. I want to know whether hex head bolts specifically refer to ordinary carbon steel bolts with low strength grades, such as grade 4.8, 6.8, or 35#. Are bolts of grade 8.8 and above not considered hex head bolts, but rather double-headed studs? 2. Bolts with a strength of 8.8 or higher are considered high-strength bolts; are 35CrMo bolts also high-strength bolts? Can grade 8.8 and 35CrMo be combined into one – grade 8.8 with material 35CrMo – or cannot these two be mixed together? In my documents, hex bolts made of grade 8.8 material 35CrMo are described, which means that these three descriptions refer to the same part
Hex head bolts are a major category of bolts; they are available in both 4.8 grade and 8.8 grade； Double-headed studs and hex head bolts are two different types of threaded connections, each with its own grades ； A strength level of over 8.8 is considered high strength; the properties of 35CrMo material exceed 8.8, classifying it as a high-strength material
I’m confused myself. Bolts, double-headed bolts, and hex bolts are different categories of bolt structures; there are also strength grades for bolts. 35CrMo is a material used for making bolts. Keep them separate and don’t mix them up
High-strength hex head bolts of grade 10.9 for steel structures.
Hex head bolts, double-headed bolts (which are technically referred to as studs) belong to the category of fasteners. The 8.8 grade is independent of the material strength level.