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Surface roughness of thread
The surface roughness requirements of the thread are 3.2 for qualified products and 1.6 for first-class and excellent products. Mark on the thread such as M8X1-6h accuracy, to achieve a relatively high surface roughness, connection and fastening with the thread, the requirements are relatively l...Read More -
A comprehensive overview of fastener knowledge
Cold heading of fastener production process Basic concepts of cold heading definition: at room temperature, the use of a press, the blank between the upper and lower die pressure, so that the blank in the axial compression, radial expansion of the metal pressure processing. (Follow the ...Read More -
How to detect threads
Measurement steps: 1. Clean the measuring tool and measured parts to ensure that there is no iron filings on the surface of the measuring tool and measured parts. 2, then according to the nominal diameter of the measured thread, select M24×1 thread ring gauge. 3, when measuring, ...Read More -
Fastener basics
It can not be said that ordinary thread and reamed hole thread, but ordinary bolt and reamed hole bolt, because the thread part of the two is the same, the difference is that the part of the rod without thread. Because the thread part is the same, the axial force is the same. There is...Read More -
Thread tolerance and inspection
Tolerance and detection of threadbonding The purpose of this chapter is to understand the characteristics of common thread interchangeability and the application of tolerance standards. The learning requirement is to understand the influence of the main geometric errors of common thread on the i...Read More -
Fastener torque and common problems
Division of responsibilities for fastener torque 1. PATAC is responsible for releasing dynamic torque and initial static torque. PATAC releases dynamic torque standard according to design requirements, combined with experimental results and road test results. 2. ME is responsible for releasi...Read More -
Thread tolerance and inspection
Tolerance and detection of thread bonding The purpose of this chapter is to understand the characteristics of common thread interchangeability and the application of tolerance standards. The learning requirement is to understand the influence of the main geometric errors of common thread on the ...Read More -
Thread standard
Standard series of diameter and pitch (GB/T193-2003) The diameter and pitch standard combination series shall comply with the provisio of Table 1. In the table, the pitch should be selected in the same row as the diamete Column diameter.Choose the first series of diameters first, the second s...Read More -
Classification and marking of common threads
Marking and marking of thread 8In order to express the many elements of the thread clearly, so as to facilitate processing, the necessary annotation must be made in the pattern of the thread configuration, and the core of the annotation is the complete marking of the thread, for different tired...Read More
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