When we use self clinching nuts, we often encounter some questions. For those who don't know about rivet nuts, they don't know how to better deal with these questions. Therefore, the following author lists some common questions about rivet nuts for us, hoping to help us use rivet nuts.
1. What materials are high-strength screws made of?
PEM rivet nuts usually refer to screws above grade 10.9, and stainless steel screws above grade 10.9 should be 34CrNiMo or 34CrNi3Mo. Of course, heat treatment is indispensable.
2. Why is it forbidden to get in the rain before the high-strength bolts of the steel structure are finally screwed?
Afraid of rust!
3. Can PEM rivet nuts be used in the connection of aluminum materials?
Are you going to use aluminum to withstand heavy loads? How can materials that are not of the same strength level be used together? If used, the pre-tightening force of the bolts cannot exceed the acceptable strength limit of aluminum.
4. What are the requirements for the construction pre-tension of high-strength bolts?
It should meet the design requirements, and neither the undertightening value nor the overtightening value should exceed 10% of the specified value.
5. Questions about high-strength fasteners?
1) Guaranteed strength requirements: Guaranteed load and wedge load are the key items (category A) to check the mechanical performance of products under the action of tensile load, espec
