In order to meet the requirements of friction coefficient test of fasteners, and to standardize the stability and standard type of nuts and bolts used for matching (testing the handpiece), we strictly customize the matching bolts and nuts for friction coefficient test of fasteners in accordance with the standard specification, for the general customers to choose.
The advantages of the test samples are as follows:
2. Varieties: for all kinds of specifications,strength grades and length, standard and non-standard requirements;
3. Professional and strict packaging: sealed and dry packaging to prevent transportation collision protection, small number of separate sealing;
4. ultrasonic cleaning or surface treatment will be performed in strict accordance with the requirements of time limit, to ensure the stability and accuracy of the sample.
For testing bolts, screws and studs with performance class 10.9 and below, test nuts shall be rated 10 according to ISO 4032 or ISO 8673.While,bolts and nuts with performance rate of 12.9,the rate of testing nuts should be 12 according to ISO 4033 and ISO 8674.